Method for breaking heat dormancy of lettuce seeds

A technology for seeds and lettuce, which is applied in the field of lettuce seed pre-sowing treatment, to achieve the effect of promoting seed germination and increasing the emergence rate in the field

Inactive Publication Date: 2012-10-17
SHANGHAI ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hormone treatment can alleviate the dormancy of lettuce seeds for stems, but the existing seed treatment methods have not been able to solve the shortcomings of high temperature dormancy of lettuce seeds

Method used

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  • Method for breaking heat dormancy of lettuce seeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take by weighing 100 grams of lettuce seeds for selected stems (special heat-resistant Erbaipi), add 5 mg of gibberellin (GA 3 ) and 5 mg of cytokinin (6-BA) were dissolved in 1 liter of water to form a mixed aqueous solution, then the seeds, vermiculite, and mixed aqueous solution were fully mixed in a weight ratio of 2:4:1, and placed in an airtight container , placed at 10°C for 3 days. After treatment, separate the seeds from the vermiculite with a sieve, dry them in a drying oven at 25°C to a safe water content, and store them in a sealed container or store them at 4°C within a week for sowing.

Embodiment 2

[0015] Take by weighing 500 grams of selected stem lettuce seeds (green green), 3mg gibberellin (GA 3 ) and 3 mg of cytokinin (6-BA) were dissolved in 1 liter of water to form a mixed aqueous solution, then the seeds, vermiculite, and mixed aqueous solution were fully mixed in a weight ratio of 2:4:1, and placed in an airtight container , placed at 15°C for 2 days. After treatment, separate the seeds from the vermiculite with a sieve, dry them in a drying oven at 25°C to a safe water content, and store them in a sealed container or store them at 4°C within a week for sowing.

Embodiment 3

[0017] Take by weighing 1000 grams of selected stem lettuce seeds (Zhongduqing), 7mg gibberellin (GA 3 ) and 7 mg of cytokinin (6-BA) were dissolved in 1 liter of water to form a mixed aqueous solution, then the seeds, vermiculite, and mixed aqueous solution were fully mixed in a weight ratio of 2:4:1, and placed in a closed container , placed at 5°C for 5 days. After treatment, separate the seeds from the vermiculite with a sieve, dry them in a drying oven at 25°C to a safe water content, and store them in a sealed container or store them at 4°C within a week for sowing.

[0018] Take out 200 seeds in the above example for indoor germination experiment. The germination test is carried out according to the national standard. The germination temperature is 28°C constant temperature, 50 seeds are treated for each, and repeated four times. The germination potential is counted in 3 days, and the germination rate is counted in 7 days. , the result is as follows:

[0019]

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Abstract

The invention discloses a method for breaking heat dormancy of lettuce seeds. The steps of the method are as follows: 1) preparing a mixed aqueous solution of a gibberellin (GA3) and a cytokinins (6-BA), with a concentration of 1-20mg / L, according to a certain proportion; 2)fully mixing seeds ,vermiculite and the mixed aqueous solution by weight ratio of 2:4:1,and putting the mixture into an enclosed container to stay for 1-5 days at a temperature of 5 -15DEG C; 3)using a sieve to eliminate substrates from the processed seeds, re-drying the seeds to the safety water content and storing by sealing. The method provided by the invention can break the heat dormancy of the lettuce seeds, improve seed germination, field emergence rate and seedling emergence speed.

Description

technical field [0001] The invention relates to seed treatment and seed physiological application technology, in particular to a lettuce seed treatment method before sowing. Background technique [0002] Lettuce is a vegetable commonly cultivated in my country, and likes cold and humid climate conditions. Most lettuce varieties are difficult to germinate when the temperature exceeds 25-30°C. This brings many adverse effects to lettuce seedling cultivation. Therefore, how to break the high-temperature dormancy characteristics of lettuce seeds and improve the emergence rate in the field has become an urgent problem to be solved. The genetic characteristics of lettuce seeds itself is one of the reasons for their heat dormancy, and high temperature induces some germination-inhibiting substances in lettuce seeds for stems, which is another reason for the low germination rate. [0003] There are already many ways to break lettuce seeds at home and abroad. The research of Qi Hui ...

Claims

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Application Information

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IPC IPC(8): A01C1/00A01N43/90A01N43/12A01P21/00
Inventor 李明刘彦文姚东伟
Owner SHANGHAI ACAD OF AGRI SCI
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