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Application of 5-aminolevulinic acid (ALA) in thinning flourish flowers of fruit trees

A technology of aminolevulinic acid and fruit trees, applied in the fields of application, chemicals for biological control, animal repellent, etc., can solve the problems that ALA has not been reported, and achieve the reduction of agricultural production costs, lower fruit setting rate, The effect of promoting the shedding of flowers and young fruits

Active Publication Date: 2011-06-15
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether ALA can be used as an orchard flower thinning agent has not been reported

Method used

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  • Application of 5-aminolevulinic acid (ALA) in thinning flourish flowers of fruit trees
  • Application of 5-aminolevulinic acid (ALA) in thinning flourish flowers of fruit trees
  • Application of 5-aminolevulinic acid (ALA) in thinning flourish flowers of fruit trees

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Select 12 'Fengshui' pear trees with consistent growth, set up 4 treatments, repeat 3 times, and spray the "regulator" containing 200mg / L-600mg / L ALA in the full flowering stage respectively, with clear water as the control, separated by 3 One day, the pear blossoms were sprayed twice. After 3 weeks and 6 weeks, the fruit setting rate was investigated, and it was found that compared with the control, the "regulator" containing ALA concentration of 200mg / L-600mg / L could significantly reduce the fruit setting rate. After 12 weeks, the photosynthetic ability of the leaves was investigated, and it was found that compared with the control, the use of "regulators" containing ALA concentrations of 200mg / L-600mg / L could improve the photosynthetic efficiency of the leaves.

[0018] Table 1. The effect of spraying different concentrations of "regulator" on the fruit setting rate (%) of pears

[0019]

[0020] Note: The data in the table are the mean ± standard deviation of 3 ...

Embodiment 2

[0022] Select 18 'Fuji' apple trees in the full fruit stage with consistent growth, and spray them once with the "regulator" containing ALA concentration of 200mg / L-1000mg / L at the full flower stage, with clear water as the control. 6 treatments, 3 repetitions. Investigate the fruit setting rate after 3 weeks and 6 weeks. It was found that compared with the control, the "regulator" containing ALA concentration of 200mg / L-1000mg / L can significantly reduce the fruit setting rate. After 12 weeks, the photosynthetic ability of the leaves was investigated, and it was found that compared with the control, the use of "regulators" containing ALA concentrations of 200mg / L-1000mg / L could improve the photosynthetic efficiency of the leaves.

[0023] Table 2 Effect of spraying different concentrations of "regulator" on apple fruit setting rate (%)

[0024]

[0025] Note: The data in the table are the mean ± standard deviation of three repetitions, and different letters after the data...

Embodiment 3

[0027] Select 12 grown-up 'Xiahei' vines in greenhouses with consistent growth and limit root cultivation, set up 4 treatments, repeat 3 times, spray with "regulator" containing ALA concentration of 200mg / L-600mg / L at the full flowering stage, Take spraying water as a control. When harvesting, the fresh weight of the ear, the number of grains per ear, the weight of each grain, and the content of soluble solids were investigated, and it was found that compared with the control, the "regulator" containing ALA concentration of 200mg / L-600mg / L significantly reduced the number of grapes per ear. The number of fruit grains, but did not affect the fresh weight per panicle, the reason is that the fresh weight per grain increased while reducing the number of fruit grains. In addition, the "regulator" treatment significantly increased the soluble solids content of berries, so the eating quality of grapes was significantly improved.

[0028] Table 3. The effect of spraying different con...

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Abstract

The invention discloses an application of 5-aminolevulinic acid in thinning the flourish flowers of fruit trees. ALA inhibits the pollen from germinating and the pollen tube from elongating to hinder the pollination and fertilization of the fruit trees, and promotes falling off of flowers and young fruits, thus lowering the fruit setting percentage, reducing the manual flower thinning and fruit thinning work loads, and lowering the agricultural production cost. ALA has no bad influence on the environments, does not have the problem of chemical injury, is not limited by regions, can be applied to pollution-free cultivation of fruit trees, such as pears, apples, peaches, grapes and the like, and also can be applied to producing organic fruits.

Description

[0001] technical field [0002] The invention belongs to the technical field of plant growth regulators, in particular to the application of 5-aminolevulinic acid (ALA) in thinning excess flowers of fruit trees. [0003] Background technique [0004] In order to achieve high-quality, high-yield and stable production, fruit tree production has always emphasized the control of the load of a single fruit tree to prevent the occurrence of big and small years. In fact, the load of fruit trees (that is, the number of fruits) not only affects the fruit yield and quality of the current year, but also has a great impact on the growth and development of fruit trees in the coming year. For this reason, flower and fruit thinning has become a very important technical link in the high-quality, high-yield and stable-yield cultivation of fruit trees. The labor input applied to artificial flower thinning and fruit thinning of fruit trees accounts for about 20-25% of the labor input in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/44A01P21/00A01G17/00
Inventor 汪良驹申明张治平
Owner NANJING AGRICULTURAL UNIVERSITY
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