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A Simple Method for Quickly Screening Cold-tolerant Rice Varieties

A technology of cold resistance and variety, applied in the field of crop screening, can solve the problems of low operating efficiency, labor-intensive, time-consuming, etc., and achieve the effect of improving screening efficiency, overcoming labor-intensive, and convenient operation

Inactive Publication Date: 2019-11-15
JIANGXI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, it was time-consuming, labor-intensive and labor-intensive to identify the cold tolerance of varieties by examining the ear-setting rate of the whole ear, and the operation efficiency was low.
At present, there is no screening method for quickly judging cold-tolerant rice varieties by examining the seed-setting rate of specific ear positions

Method used

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  • A Simple Method for Quickly Screening Cold-tolerant Rice Varieties
  • A Simple Method for Quickly Screening Cold-tolerant Rice Varieties
  • A Simple Method for Quickly Screening Cold-tolerant Rice Varieties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: The tested varieties are Yongyou series varieties and Zhejing 88 and Qianyou 2 cultivated in recent years. They are planted in pots, and the management of potted plants is the same as that of general high-yield cultivation.

[0016] When the ear of the main stem is about 2 cm out, select well-developed single ears (including some tiller ears) that are headed on the same day and mark them, and mark about 6 single ears in each pot, and transplant the potted plants that grow uniformly into the potted plants at the flowering stage. At the same time, the open spikelets were removed in the artificial climate box, some of them were treated with cold treatment, and the other were treated with control. After the treatment, put all the potted plants back under natural conditions for management, while keeping the soil water content consistent and reducing the impact of water temperature adjustment on the results.

[0017] On the day of the rice heading and flowering per...

Embodiment 2

[0019] Example 2: The tested varieties were identified and screened cold-tolerant varieties Yongyou 538 and Zhejing 88, cold-sensitive varieties Yongyou 17, and indica rice Zhongzheyou 1. They were planted in pots, and the management of potted plants was the same as that of general high-yield cultivation.

[0020] When the ear of the main stem is about 2 cm out, select well-developed single ears (including some tiller ears) that are headed on the same day and mark them, and mark about 6 single ears in each pot, and transplant the potted plants that grow uniformly into the potted plants at the flowering stage. The artificial climate box will remove the spikelets that have opened. Carry out cold treatment in the reproductive growth period of rice varieties, and the cold treatment period of the reproductive growth period of rice varieties refers to the filling and fruiting stage (0-maturation stage after flowering), and the specific cold treatment process is: the cold treatment te...

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PUM

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Abstract

A simple method for quickly screening out cold-tolerance rice varieties includes the following steps that varieties to be tested are subjected to cold treatment in the reproductive growth stage, tested materials are sampled in the mature stage, and the cold-tolerance rice varieties can be screened out quickly by examining the setting rate of special spikelet position grains of rice ears. The method for rice cold tolerance screening is convenient to operate, quick and simple to use and high in accuracy, overcomes the defect that labor and time are wasted in traditional examining of whole rice ear grain setting, and greatly improves screening efficiency of rice variety cold tolerance.

Description

technical field [0001] The invention relates to a new method for screening crops, in particular to a simple method for quickly screening cold-tolerant rice varieties. Background technique [0002] Rice is a temperature-loving crop and is very sensitive to temperature. However, the frequent occurrence of extreme cold weather and climate events around the world has caused serious harm to it. Low-temperature chilling injury is one of the main disasters affecting rice production and yield. It occurs in all rice areas in my country. Generally, a strong low-temperature chilling injury will occur once every 4 to 5 years. 10 billion kg. Breeding cold-tolerant varieties in production is one of the most economical and effective ways to slow down the loss of chilling damage. At present, the seed setting rate has always been the main indicator for evaluating low temperature and chilling damage in rice production, and it is also the most important and important indicator used in the stu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G7/06A01G22/22
CPCA01G7/06A01G22/22
Inventor 曾研华曾勇军吴建富潘晓华石庆华李木英谭雪明黄山商庆银
Owner JIANGXI AGRICULTURAL UNIVERSITY