A method for evaluating the resistance to necking of fresh cut gerbera jamesonii flowers

Abstract

The application discloses a method for evaluating the anti-neck-bending capacity of fresh-cut gerbera flowers, and the specific steps of the evaluation method are as follows: step 1, preparing a measuring platform; step 2, marking the barycenter, marking a G point at the barycenter and a T point 4-6 cm below the barycenter; step 3, placing samples, placing the fresh-cut gerbera flowers steadily on the measuring platforms A1 and A2, and detecting the T point at the marked detection position of the flower branch, which is located in the suspended section in the middle of the two platforms; step 4, anti-neck-bending determination, vertically pressing the marked detection position T point of the flower branch by using a plant anti-lodging tester until the flower branch is bent, and recording the maximum pressure value; step 5, repeated determination, and taking the average value as the anti-neck-bending value of the sample flower branch. The method for evaluating the anti-neck-bending capacity of fresh-cut gerbera flowers uses a pure physical means to evaluate the anti-neck-bending capacity, compared with other evaluation methods, simplifies the detection means and process, greatly improves the detection efficiency, and is convenient for use in the quality detection of fresh-cut flower products in commercial circulation.

Description

Technical Field

[0001] This invention relates to the field of evaluation technology for the neck resistance of cut flowers, specifically a method for evaluating the neck resistance of cut gerbera flowers. Background Technology

[0002] Gerbera, also known as African daisy, is a perennial herbaceous plant belonging to the genus Gerbera in the family Asteraceae. Native to South Africa, it has become one of the world's five major cut flowers due to its large, brightly colored, and beautiful flowers. Gerbera cut flowers have a low degree of lignification and hollow stems, making them prone to bending and drooping of the stems and flower heads during post-harvest storage, transportation, and vase arrangement. This phenomenon is called "bent neck" and is one of the main factors affecting the quality and lifespan of gerbera cut flowers. The basic quality requirement for gerbera cut flowers is the absence of bent neck.

[0003] Current research on gerbera stem bending mainly focuses on the organ and tissue structure and physiological metabolic mechanisms of gerberas. There are few practically applicable evaluation or testing methods for the bending resistance of gerbera stems. The commonly used evaluation method is the vase observation method, which evaluates the bending resistance of different gerberas by the number of days it takes for fresh cut flowers to be placed in a vase until bending occurs. Secondly, the bending resistance of gerberas is evaluated by physiological and biochemical experimental data such as physiological anatomy of gerbera stems and measurement of water content and metabolite content in the stems. The former vase observation time is long (at least 4 days), and the latter testing method and process are cumbersome, which cannot be well applied to the post-harvest testing of fresh cut flowers and is difficult to help the development of the fresh cut flower industry.

[0004] To address the above issues, a method for evaluating the neck-bending resistance of gerbera cut flowers is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a method for evaluating the neck-bending resistance of gerbera cut flowers, in order to solve the problem mentioned in the background art of lacking an evaluation or detection method for the neck-bending resistance of gerbera flower branches for post-harvest testing of cut flowers.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for evaluating the neck-bending resistance of cut gerbera flowers;

[0007] The specific steps of the evaluation method are as follows:

[0008] Step 1: Prepare the measurement platform;

[0009] Prepare contour measurement platforms A1 and A2 and place them on a horizontal ground or tabletop;

[0010] Step 2: Mark the center of gravity;

[0011] Use the suspension method to find the center of gravity of the African daisy branch to be tested, mark point G at the center of gravity, and mark point T 4-6cm below the center of gravity. The latter is the test site.

[0012] Step 3: Place the sample;

[0013] Place the fresh cut gerbera flowers stably on measuring platforms A1 and A2, ensuring that the flower heads are outside the platforms, the flower stems naturally touch the platforms on both sides, and the center of gravity G of the flower stems is located on measuring platform A1 or A2, and the detection point T is located in the suspended section between the two platforms.

[0014] Step 4: Neck resistance test;

[0015] Using a plant lodging resistance tester, connect the flat pressure head to the test rod and press the flat pressure head naturally and vertically onto the test point T marked on the flower branch until the flower branch bends. Record the maximum pressure value displayed on the instrument.

[0016] Step 5: Repeat the measurement;

[0017] Each group of samples was tested repeatedly with 3-10 flowers, and the average value was taken as the bending resistance value of the flower branch.

[0018] Preferably, the measuring platforms A1 and A2 are constructed using the same material, with a distance of 10cm between them, a platform height controlled between 10-15cm, and a platform width designed to prevent the gerbera cut flowers from falling. The platform length on the side where the flower stem is placed should be 5±2cm.

[0019] Preferably, during the marking of the center of gravity, the center of gravity of the gerbera branch to be tested is found using the suspension method, and points G and T are marked at the center of gravity and 5cm away from the center of gravity at the lower end of the branch, respectively. The latter is the detection area.

[0020] Preferably, the suspension method involves suspending the gerbera flower stem by looping a thin thread around it, and moving the gerbera flower stem left and right until both sides of the gerbera flower stem are balanced under the suspension of the thin thread. The position where the thin thread is suspended is the center of gravity point G.

[0021] Preferably, the plant lodging resistance tester uses the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head equipped with the instrument is connected to the test rod. After turning on the instrument, operate according to the instructions and press the flat pressure head naturally and vertically onto the test point T marked on the flower branch until the flower branch bends. Record the maximum pressure value displayed on the instrument.

[0022] Preferably, each group of samples is tested repeatedly with 3-10 flowers, and the average value is taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

[0023] Compared with the prior art, the beneficial effects of this invention are: the method for evaluating the neck-bending resistance of cut gerbera flowers,

[0024] 1. Based on the statistical results of the relationship between the bending neck position of the gerbera flower branch and the center of gravity of the flower branch, the conclusion is that the bending neck position of the flower branch often appears in the area about 0-10cm away from the center of gravity of the flower branch at the lower end of the flower branch. By using this method to detect this area, the bending resistance of gerbera can be evaluated quickly and intuitively. Moreover, the operation is simple and the data is reliable. Compared with other evaluation methods, it simplifies the detection means and process, greatly improves the detection efficiency, and is easy to apply to the post-harvest detection of cut flowers, thus contributing to the development of the cut flower industry.

[0025] 2. The bending phenomenon of gerbera cut flowers is related to a variety of factors such as variety, flower branch quality, and environment. This method evaluates the resistance to bending by purely physical means. Compared with existing evaluation methods, the technical approach is completely different, the scope of application is wider, the treatment methods and environmental interference are less, and it does not require high technical content when used, making it easy to use for quality testing of cut flower products in commercial circulation. Attached Figure Description

[0026] Figure 1 This is a front view of the measurement platform for determining the bending resistance of the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 The present invention provides the following technical solutions:

[0029] Example 1

[0030] A method for evaluating the neck-bending resistance of cut gerbera flowers;

[0031] The gerbera variety selected for evaluation was "Meiman," a semi-double, medium-flowered gerbera with a black center and white ray florets. The specific steps of the evaluation method are as follows:

[0032] Step 1: Prepare the measurement platform;

[0033] Prepare contour measurement platforms A1 and A2 and place them on a horizontal ground or table. Platforms A1 and A2 should be constructed using the same material. The distance between platforms A1 and A2 should be 10cm, the height of the platforms should be 12cm, and the width of the platforms should be 5cm. The length of the platform on the side where the flower branch is placed should be 4cm.

[0034] Step 2: Mark the center of gravity;

[0035] During the process of marking the center of gravity, the suspension method is used to find the center of gravity of the gerbera flower stem to be evaluated. The suspension method involves suspending the gerbera flower stem by looping a thin thread around it and moving the gerbera flower stem left and right until the two sides of the gerbera flower stem are balanced under the suspension of the thin thread. The position where the thin thread is suspended is the center of gravity point G. Mark points G and T are drawn at the center of gravity and 5cm away from the center of gravity at the bottom of the flower stem, respectively. The latter is the detection site.

[0036] Step 3: Place the sample;

[0037] Place the fresh cut gerbera flowers stably on measuring platforms A1 and A2, ensuring that the flower heads are outside the platforms, the flower stems naturally touch the platforms on both sides, and the center of gravity G of the flower stems is located on measuring platform A1 or A2, and the detection point T is located in the suspended section between the two platforms.

[0038] Step 4: Neck resistance test;

[0039] The plant lodging resistance tester used was the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head was connected to the test rod. After turning on the instrument, the operation was carried out according to the instructions. The flat pressure head was pressed naturally and vertically onto the test point T marked on the flower branch until the flower branch bent. The maximum pressure value displayed on the instrument was recorded.

[0040] Step 5: Repeat the measurement;

[0041] Three flowers were tested repeatedly in each group of samples, and the average value was taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

[0042] Example 2

[0043] A method for evaluating the neck-bending resistance of cut gerbera flowers;

[0044] The gerbera variety selected for evaluation was "Yunnan Red," a semi-double, large-flowered gerbera with a yellow center and red ray florets. The specific steps of the evaluation method are as follows:

[0045] Step 1: Prepare the measurement platform;

[0046] Prepare contour measurement platforms A1 and A2 and place them on a horizontal ground or table. Platforms A1 and A2 should be constructed using the same material. The distance between platforms A1 and A2 should be 10cm, the platform height should be 15cm, and the platform width should be 5cm. The platform length on the side where the flower branch is placed should be 5cm.

[0047] Step 2: Mark the center of gravity;

[0048] During the process of marking the center of gravity, the suspension method is used to find the center of gravity of the gerbera flower stem to be evaluated. The suspension method involves suspending the gerbera flower stem by looping a thin thread around it. The gerbera flower stem is moved left and right until the two sides of the gerbera flower stem are balanced under the suspension of the thin thread. The position where the thin thread is suspended is the center of gravity point G. Mark points G and T are drawn at the center of gravity and 6cm away from the center of gravity at the bottom of the flower stem, respectively. The latter is the detection site.

[0049] Step 3: Place the sample;

[0050] Place the fresh cut gerbera flowers stably on measuring platforms A1 and A2, ensuring that the flower heads are outside the platforms, the flower stems naturally touch the platforms on both sides, and the center of gravity G of the flower stems is located on measuring platform A1 or A2, and the detection point T is located in the suspended section between the two platforms.

[0051] Step 4: Neck resistance test;

[0052] The plant lodging resistance tester used was the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head was connected to the test rod. After turning on the instrument, the operation was carried out according to the instructions. The flat pressure head was pressed naturally and vertically onto the test point T marked on the flower branch until the flower branch bent. The maximum pressure value displayed on the instrument was recorded.

[0053] Step 5: Repeat the measurement;

[0054] Three flowers were tested repeatedly in each group of samples, and the average value was taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

[0055] Example 3

[0056] A method for evaluating the neck-bending resistance of cut gerbera flowers;

[0057] The gerbera variety selected for evaluation was "Qingya," a single-petaled, small-flowered gerbera with yellow centers and yellow ray florets. The specific steps of the evaluation method are as follows:

[0058] Step 1: Prepare the measurement platform;

[0059] Prepare contour measurement platforms A1 and A2 and place them on a horizontal ground or table. Platforms A1 and A2 should be constructed using the same material. The distance between platforms A1 and A2 should be 10cm, the platform height should be 10cm, and the platform width should be 3cm. The platform length on the side where the flower branch is placed should be 3cm.

[0060] Step 2: Mark the center of gravity;

[0061] During the process of marking the center of gravity, the suspension method is used to find the center of gravity of the gerbera flower stem to be evaluated. The suspension method involves suspending the gerbera flower stem by looping a thin thread around it. The gerbera flower stem is moved left and right until the two sides of the gerbera flower stem are balanced under the suspension of the thin thread. The position where the thin thread is suspended is the center of gravity point G. Mark points G and T are drawn at the center of gravity and 4cm away from the center of gravity at the bottom of the flower stem, respectively. The latter is the detection site.

[0062] Step 3: Place the sample;

[0063] Place the fresh cut gerbera flowers stably on measuring platforms A1 and A2, ensuring that the flower heads are outside the platforms, the flower stems naturally touch the platforms on both sides, and the center of gravity G of the flower stems is located on measuring platform A1 or A2, and the detection point T is located in the suspended section between the two platforms.

[0064] Step 4: Neck resistance test;

[0065] The plant lodging resistance tester used was the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head was connected to the test rod. After turning on the instrument, the operation was carried out according to the instructions. The flat pressure head was pressed naturally and vertically onto the test point T marked on the flower branch until the flower branch bent. The maximum pressure value displayed on the instrument was recorded.

[0066] Step 5: Repeat the measurement;

[0067] Three flowers were tested repeatedly in each group of samples, and the average value was taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

[0068] Example 4

[0069] A method for evaluating the neck-bending resistance of cut gerbera flowers;

[0070] The gerbera variety selected for evaluation was "Champagne," a semi-double, large-flowered gerbera with a black center and yellow ray florets. The specific steps of the evaluation method are as follows:

[0071] Step 1: Prepare the measurement platform;

[0072] Prepare contour measurement platforms A1 and A2 and place them on a horizontal ground or table. Platforms A1 and A2 should be constructed using the same material. The distance between platforms A1 and A2 should be 10cm, the platform height should be 15cm, and the platform width should be 5cm. The platform length on the side where the flower branch is placed should be 5cm.

[0073] Step 2: Mark the center of gravity;

[0074] During the process of marking the center of gravity, the suspension method is used to find the center of gravity of the gerbera flower stem to be evaluated. The suspension method involves suspending the gerbera flower stem by looping a thin thread around it. The gerbera flower stem is moved left and right until the two sides of the gerbera flower stem are balanced under the suspension of the thin thread. The position where the thin thread is suspended is the center of gravity point G. Mark points G and T are drawn at the center of gravity and 8cm away from the center of gravity at the bottom of the flower stem, respectively. The latter is the detection site.

[0075] Step 3: Place the sample;

[0076] Place the fresh cut gerbera flowers stably on measuring platforms A1 and A2, ensuring that the flower heads are outside the platforms, the flower stems naturally touch the platforms on both sides, and the center of gravity G of the flower stems is located on measuring platform A1 or A2, and the detection point T is located in the suspended section between the two platforms.

[0077] Step 4: Neck resistance test;

[0078] The plant lodging resistance tester used was the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head was connected to the test rod. After turning on the instrument, the operation was carried out according to the instructions. The flat pressure head was pressed naturally and vertically onto the test point T marked on the flower branch until the flower branch bent. The maximum pressure value displayed on the instrument was recorded.

[0079] Step 5: Repeat the measurement;

[0080] Four flowers were tested repeatedly in each group of samples, and the average value was taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

[0081] Example 5

[0082] A method for evaluating the neck-bending resistance of cut gerbera flowers;

[0083] The gerbera variety selected for evaluation was "Cherish," a small-flowered, single-petaled gerbera with a black center and white ray florets with pink edges. The specific steps of the evaluation method are as follows:

[0084] Step 1: Prepare the measurement platform;

[0085] Prepare contour measurement platforms A1 and A2 and place them on a horizontal ground or table. Platforms A1 and A2 should be constructed using the same material. The distance between platforms A1 and A2 should be 10cm, the platform height should be 10cm, and the platform width should be 3cm. The platform length on the side where the flower branch is placed should be 3cm.

[0086] Step 2: Mark the center of gravity;

[0087] During the process of marking the center of gravity, the suspension method is used to find the center of gravity of the gerbera flower stem to be evaluated. The suspension method involves suspending the gerbera flower stem by looping a thin thread around it and moving the gerbera flower stem left and right until the two sides of the gerbera flower stem are balanced under the suspension of the thin thread. The position where the thin thread is suspended is the center of gravity point G. Mark points G and T are drawn at the center of gravity and 2cm away from the center of gravity at the bottom of the flower stem, respectively. The latter is the detection site.

[0088] Step 3: Place the sample;

[0089] Place the fresh cut gerbera flowers stably on measuring platforms A1 and A2, ensuring that the flower heads are outside the platforms, the flower stems naturally touch the platforms on both sides, and the center of gravity G of the flower stems is located on measuring platform A1 or A2, and the detection point T is located in the suspended section between the two platforms.

[0090] Step 4: Neck resistance test;

[0091] The plant lodging resistance tester used was the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head was connected to the test rod. After turning on the instrument, the operation was carried out according to the instructions. The flat pressure head was pressed naturally and vertically onto the test point T marked on the flower branch until the flower branch bent. The maximum pressure value displayed on the instrument was recorded.

[0092] Step 5: Repeat the measurement;

[0093] Four flowers were tested repeatedly in each group of samples, and the average value was taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

[0094] This method is based on statistical results of the relationship between the bend neck of the gerbera branch and the center of gravity of the branch. The results show that the bend neck of the branch often appears in the area of ​​about 0 to 10 cm from the center of gravity of the branch at the lower end. This conclusion was obtained by the inventor through his own research, without drawing on the research experience and conclusions of his predecessors.

[0095] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for evaluating the neck-bending resistance of cut gerbera flowers, characterized in that: The method is based on the relationship between the neck position and the center of gravity of the African daisy branch. The high-incidence area of ​​neck bending is located within 0-10cm below the center of gravity. The high-incidence area of ​​neck bending is located by determining the center of gravity of the flower branch and then quantitatively measuring it. The specific steps of the method are as follows: Step 1: Prepare the measurement platform; Prepare contour measurement platforms A1 and A2 and place them on a horizontal surface or table. Step 2: Mark the center of gravity; Use the suspension method to find the center of gravity of the African daisy branch to be tested, and mark point G at the center of gravity; Step 3: Identify and mark the detection site; Based on the correlation between the high incidence of neck bending in gerberas determined by statistical research and the position of the center of gravity, point T is marked 4-6 cm below the center of gravity G. This point T is the detection site. Step 4: Place the sample; Place the fresh cut gerbera flowers stably on the contour measurement platforms A1 and A2, ensuring that the flower head is outside the platform and the flower stem naturally touches the two platforms. By adjusting the position of the flower stem, ensure that its center of gravity G falls on one of the contour measurement platforms A1 or A2. The detection point T is located in the suspended section between the two platforms. Step 5: Neck resistance test; Using a plant lodging resistance tester, connect the flat pressure head to the test rod and press the flat pressure head naturally and vertically onto the test point T marked on the flower branch until the flower branch bends. Record the maximum pressure value displayed on the instrument. Step 6: Repeat the measurement; Each group of samples was tested repeatedly with 3-10 flowers, and the average value was taken as the bending resistance value of the flower branch.

2. The method for evaluating the neck-bending resistance of cut gerbera flowers according to claim 1, characterized in that: The contour measurement platforms A1 and A2 are constructed using the same material. The distance between the contour measurement platforms A1 and A2 is 10 cm. The height of the platforms is controlled between 10-15 cm. The width of the platforms is designed to prevent the fresh cut gerbera flowers from falling. The length of the platform on the side where the flower branches are placed is required to be 5±2 cm.

3. The method for evaluating the neck-bending resistance of cut gerbera flowers according to claim 1, characterized in that: The process of marking the center of gravity uses the suspension method to find the center of gravity of the African daisy branch to be tested. Markings G and T are drawn at the center of gravity and 5 cm away from the center of gravity at the lower end of the branch, respectively. The latter is the detection site.

4. The method for evaluating the neck-bending resistance of cut gerbera flowers according to claim 3, characterized in that: The suspension method involves suspending the gerbera flower stem by looping a thin thread around it and moving the stem left and right until the stem is balanced on both sides under the suspension of the thread. The position where the thread is suspended is the center of gravity point G.

5. The method for evaluating the neck-bending resistance of cut gerbera flowers according to claim 1, characterized in that: The plant lodging resistance tester used is the YYD-1A portable plant lodging resistance tester manufactured by Top Company. The flat pressure head of the instrument is connected to the test rod. After turning on the instrument, operate according to the instructions and press the flat pressure head naturally and vertically onto the test point T marked on the flower branch until the flower branch bends. Record the maximum pressure value displayed on the instrument.

6. The method for evaluating the neck-bending resistance of cut gerbera flowers according to claim 1, characterized in that: Each group of samples is tested repeatedly with 3-10 flowers, and the average value is taken as the bending resistance value of the flower branch. The larger the average value, the stronger the bending resistance of the flower branch.

Images