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Method for high-efficiency screening of cold-resistant varieties of rice at seedling stage

A technology for rice seedlings and rice seeds, applied in the fields of botany equipment and methods, application, plant gene improvement, etc., can solve the problem of low selection efficiency of cold-resistant varieties, improve germination rate and germination potential, and achieve accurate results of seed selection , Promote the effect of respiration and enzyme activity

Inactive Publication Date: 2017-05-31
安徽华安种业有限责任公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the selection efficiency of the existing cold-resistant varieties at the rice seedling stage is not high, the purpose of the present invention is to provide a method for efficient screening of cold-resistant varieties at the rice seedling stage, which has high efficiency in the selection of cold-resistant varieties at the rice seedling stage. advantage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for efficient screening of rice seedling cold-resistant varieties, comprising the following steps:

[0025] Step 1, taking the soil in the northern cold rice-growing area;

[0026] Step 2, take three petri dishes, and fill each petri dish with 150g of soil;

[0027] Step 3, respectively adding the nutrients and water needed for the growth of rice seeds into three petri dishes;

[0028] Step 4, before soaking the rice seeds, dry the rice seeds for 6 hours in an environment with simulated sunlight, and then place the sun-dried rice seeds in a dry and cool place;

[0029] Step 5, select the rice seeds that have been sun-dried with clear water, fish out the grains floating on the surface of the clear water, and select plump rice seeds;

[0030] Step 6. Soak the plump rice seeds with chemicals, accelerate germination, and then sow them in petri dishes. Sow one variety in each petri dish, with a quantity of 30 grains. The three varieties are rice "Hanyou No. 7" and...

Embodiment 2

[0037] A method for efficient screening of rice seedling cold-resistant varieties, comprising the following steps:

[0038] Step 1, taking the soil in the northern cold rice-growing area;

[0039] Step 2, take three petri dishes, each petri dish is filled with soil 160g;

[0040] Step 3, respectively adding the nutrients and water needed for the growth of rice seeds into three petri dishes;

[0041] Step 4, before soaking the rice seeds, dry the rice seeds for 7 hours in an environment with simulated sunlight, and then place the sun-dried rice seeds in a dry and cool place;

[0042] Step 5, select the rice seeds that have been sun-dried with clear water, fish out the grains floating on the surface of the clear water, and select plump rice seeds;

[0043] Step 6. Soak the plump rice seeds with chemicals, accelerate germination, and then sow them in petri dishes. Each petri dish sows one variety, with a quantity of 35 grains. The three varieties are rice "Hanyou No. 7" and ric...

Embodiment 3

[0050] A method for efficient screening of rice seedling cold-resistant varieties, comprising the following steps:

[0051] Step 1, taking the soil in the northern cold rice-growing area;

[0052] Step 2, take three petri dishes, and fill each petri dish with 170g of soil;

[0053] Step 3, respectively adding the nutrients and water needed for the growth of rice seeds into three petri dishes;

[0054] Step 4, before soaking the rice seeds, dry the rice seeds for 8 hours in an environment with simulated sunlight, and then place the sun-dried rice seeds in a dry and cool place;

[0055] Step 5, select the rice seeds that have been sun-dried with clear water, fish out the grains floating on the surface of the clear water, and select plump rice seeds;

[0056] Step 6. Soak the plump rice seeds with chemicals, accelerate germination, and then sow them in petri dishes. One variety is sown in each petri dish, with a quantity of 40 grains. The three varieties are rice "Hanyou No. 7"...

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Abstract

The invention provides a method for high-efficiency screening of cold-resistant varieties of rice at a seedling stage, relating to the technical field of rice screening. The method comprises the following steps: selecting soil, putting the soil into a culture dish, adding nutrients, drying the seeds, selecting the seeds, soaking the seeds with a reagent, carrying out germination treatment, sowing the seeds, putting the culture dish in an artificial weather box to simulate a cold environment and recording and analyzing the cold resistance level of all the rice varieties at the seedling stage. The method provided by the invention has the advantage that the problem of low screening efficiency of the existing cold-resistant varieties of the rice at the seedling stage is solved.

Description

technical field [0001] The invention belongs to the technical field of rice screening, and in particular relates to a method for efficiently screening cold-resistant rice varieties at the seedling stage. Background technique [0002] Rice is one of the most important food crops in my country. More than 65% of the population in China takes rice as the staple food. It is the largest rice producer and consumer in the world. The annual sown area of ​​rice is 30 million hectares, accounting for 20% of the world; the output is 185 million tons, accounting for nearly 1 / 3 of the world; the yield per unit area is 6.35 tons / ha, which is 65% higher than the global average yield of 3.85 tons / ha. A large part of my country is in a cold environment, especially the northern regions. Rice planting in these areas has high requirements for the cold resistance of rice, and the strength of rice cold resistance directly affects the yield of rice. [0003] The Chinese patent document announced o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04
CPCA01H1/04
Inventor 黄贯刘熊延军李永吉张奎
Owner 安徽华安种业有限责任公司
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