Method for screening variety with highest nitrogen use ratio from various cut-flower chrysanthemum varieties

A technology for cut chrysanthemums and varieties, which is used in material inspection products, weighing by removing certain components, biological testing, etc.

Inactive Publication Date: 2011-09-07
NANJING AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the 21st century, researchers have successfully screened varieties with high nitrogen use efficiency in rice, co...

Method used

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  • Method for screening variety with highest nitrogen use ratio from various cut-flower chrysanthemum varieties
  • Method for screening variety with highest nitrogen use ratio from various cut-flower chrysanthemum varieties
  • Method for screening variety with highest nitrogen use ratio from various cut-flower chrysanthemum varieties

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Embodiment 1

[0044] 1. Obtain hydroponic seedlings

[0045] Select cuttings with consistent growth from the 16 cut chrysanthemum varieties (see Table 3) that need to be screened, break the ears into 5-7 cm, and remove the lower 2.5-3 cm leaves to ensure that the top two leaves are one heart. The hydroponic container is a plastic turnover box with an outer diameter of 410×310×145mm. Place a 500ml tissue culture bottle at each of the four corners of the turnover box, place a 108-hole tray on it, put the cuttings in the holes of the tray, and add tap water to the cuttings. The bottom 1-2cm, change the tap water every two days. The light time is 12 hours during the day and 12 hours at night, the highest temperature during the day is 32°C, and the lowest temperature at night is 27°C. Two weeks later, the seedlings with consistent rooting were selected to carry out the next test treatment.

[0046] Table 3 Number of different chrysanthemum cultivars (Number of different chrysanthemum cultivars...

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Abstract

The invention belongs to the technical field of plant cultivation and breeding and discloses a method for screening a variety with the highest nitrogen use ratio from various cut-flower chrysanthemum varieties, wherein the method comprises the following steps: a) acquiring a water planting seedling; b) performing the sandy culturing primary screening: dividing the water planting seedling into two groups, performing the low-nitrogen treatment on one group while performing the normal nitrogen treatment on the other group, respectively measuring the screening indexes of each variety containing the relative dry weight, relative nitrogen content and relative chlorophyll content, and then screening 2 to 6 varieties with higher nitrogen use ratio and 2 to 6 varieties with lower nitrogen use ratio for the purpose of performing comparison; and c) performing the nutrient solution cultivating repeated screening: cultivating the varieties screened from the step b) in the nutrient solution, and repeatedly screening one variety with the highest nitrogen use ratio and one variety with the lowest nitrogen use ratio. The cut-flower chrysanthemum variety which is finally screened by using the method is used for further improving the existing cut-flower chrysanthemum variety and providing the material for researching the biological characteristics and the physiologic biochemical system of the cut-flower chrysanthemum variety.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation and breeding, and relates to a method for screening varieties with relatively highest nitrogen utilization efficiency from a plurality of cut chrysanthemum varieties. Background technique [0002] Chrysanthemum (Dendranthema grandiflorum Ramat.) is one of the top ten traditional famous flowers in my country and one of the four major cut flowers in the world. It has multiple values ​​such as ornamental, edible and medicinal. my country is the origin center of cultivated chrysanthemums and the distribution center of Chrysanthemum germplasm resources. There are more than 20 species of more than 40 species of Chrysanthemum distributed in my country, and more than 3,000 cultivated chrysanthemum varieties. Among them, cut chrysanthemum is the main foreign exchange earning flower for export in my country, and facility cultivation is mostly used for annual production. At present, the use of nit...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01N21/31G01N33/48
Inventor 陈发棣顾春笋陈素梅刘兆磊房伟民管志勇
Owner NANJING AGRICULTURAL UNIVERSITY
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