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High-yield breeding method of round-grained nonglutinous rice sterile line

A japonica rice, high-yield technology is applied to the high-yield propagation method of japonica rice sterile line and the field of seed production, and can solve the problems of restricting the development of hybrid japonica rice, high cost of seed production, shortage of seeds, etc. volume, the effect of increasing production

Inactive Publication Date: 2006-08-09
YUNNAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional japonica rice CMS breeding technology has low yield and high seed production cost. Once irresistible factors are encountered, it will cause a shortage of seeds, which seriously restricts the development of hybrid japonica rice.
At present, there is no method for improving the reproductive yield of the japonica rice CMS line effectively.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The experiment was set in Mengzi, Yunnan Province (1300 meters above sea level, relative humidity 85%, temperature 24°C), in the same field comparative experiment, 6 treatments were set up, that is: the first phase of male parent and female parent were sown at the same time, and the second phase of male parent was sown at an interval of 4 days. This; the ratio of parent to parent line is 2:14; the row spacing of the female parent is 10cm×10cm; 1 grain seedling is planted; 5 days after transplanting, the male parent is topdressed with urea 5 kg / mu; the female parent is heading 5% and 40 %, spray "Hua Xinling" once, each time at an amount of 20 grams per mu, spray 30 kg of water, and when the female parent is 5% and 10% heading, spray "Nine Two 0" once, Use 1 gram per acre each time, spray 30 kilograms of water, and use conventional propagation methods as a comparison. The results are shown in Table 1.

[0009] Effective ear

Embodiment 2

[0011] The experiment was set in Mengzi, Yunnan Province (1300 meters above sea level, relative humidity 85%, temperature 24°C), in the same field comparative experiment, 6 treatments were set up, that is: the first phase of male parent and female parent were sown at the same time, and the second phase of male parent was sown at an interval of 4 days. This; the ratio of parents to parents is 2:18; the row spacing of the female parent is 10cm×15cm; 2 grain seedlings are planted; 8 days after transplanting, the male parent is topdressed with urea 5 kg / mu; the female parent is heading 5% and 40 %, spray "Hua Xinling" once, each time with an amount of 30 grams per mu, spray 30 kg of water, and when the female parent is heading 5% and 10%, spray "Nine Two 0" once, The dosage is 2 grams per acre each time, and 30 kilograms of water are sprayed, and the conventional propagation method is used as a comparison. The results are shown in Table 2.

[0012] Effective ear

Embodiment 3

[0014] The experiment was set in Mengzi, Yunnan Province (1300 meters above sea level, relative humidity 85%, temperature 24°C), in the same field comparative experiment, 6 treatments were set up, that is: the first phase of male parent and female parent were sown at the same time, and the second phase of male parent was sown at an interval of 5 days. This; the ratio of parent to parent line is 2:22; the row spacing of the female parent is 15cm×10cm; 1 grain seedling is planted; 10 days after transplanting, the male parent is topdressed with urea 5 kg / mu; the female parent is heading 5% and 40 %, spray "Hua Xinling" once, each time with a dosage of 40 grams per mu, spray 30 kg of water, and when the female parent is heading 5% and 10%, spray "Nine Two 0" once respectively, Use 3 grams per acre each time, spray 30 kilograms of water, and use conventional propagation methods as a comparison. The results are shown in Table 3.

[0015] Effective ear

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Abstract

The present invention relates to a high-yield breeding method of round-grained non-glutinous rice sterile line, belonging to the field of seed production technology. Said high-yield breeding method includes the following measures: defining breeding process, defining breeding field, defining ridge-forming mode of male parentage and female parentage, defining reasonable spacing between rows of male parentage plants and spraying plant growth regulating agent, etc. Said invention can raise setting percentage and can greatly raise yield.

Description

technical field [0001] The invention relates to a high-yield propagation method of a japonica rice sterile line, belonging to the field of agriculture, more specifically, to the field of seed production. Background technique [0002] China's hybrid rice is called "Oriental Magic Rice". The large-scale promotion and application of hybrid rice has greatly increased my country's grain production and played an important role in ensuring my country's food security. Among them, the Dian-type hybrid japonica rice was completed in 1964 with a "three-line" matching system. The hybrid japonica rice combination created the world's highest yield record of japonica rice, and the 100-acre continuous demonstration reached the level of China's super hybrid rice, making a certain contribution to increasing grain production. contribute. CMS seed production has a high technical content and must have a considerable scale to ensure quality and generate benefits. Establishing a high-yield breedi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01G22/22
Inventor 谭学林黄大军洪汝科陈丽娟金寿林张忠林许红云张树华师常俊
Owner YUNNAN AGRICULTURAL UNIVERSITY
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