Method for stabilizing the yield of two-line hybrid wheat seed production

A stable technology for hybrid wheat, applied in the field of agricultural biology, can solve the problems of insignificant effect of gibberellin and insignificant improvement of flowering period difference between parents, etc., to ensure balanced growth, solve unsatisfactory flowering period encounter, and simple method

Active Publication Date: 2021-11-09
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of plant growth regulators in hybrid rice seed production has become the most common and critical technology, and it is an important measure to improve the seed setting rate of hybrid rice seed production. The effect of the plant was not obvious, and the difference in the flowering period of the parents was not significantly improved.
At present, apart from the application of gibberellin to improve the effect of two-line hybrid wheat seed production, there is no other simple and easy exogenous application of plant growth regulators to improve the successful practice of two-line hybrid wheat seed production

Method used

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  • Method for stabilizing the yield of two-line hybrid wheat seed production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 Jingmai No. 6 Hybrid Wheat Microplot Seed Production

[0012] The test site is the experimental field of hybrid wheat microplot seed production in Dali County, Weinan City, Shaanxi Province. The male parent of the test was 1 common wheat, and the female parent of the test was 20 photothermosensitive male sterile wheat. Take row ratio planting. Each participating female parent was planted in 4 rows along the east-west direction, and the row length was 1m; the male parent was planted on the east and west sides of the female parent along the north-south direction, and 2 rows were planted respectively. A comparative experiment was set up in the same field, and the male parents were sprayed with melatonin and not sprayed with melatonin as controls.

[0013] Affected by the local rainfall in April, it is predicted that the heading and flowering of the male parent will be delayed during the young panicle differentiation period, which is 3 days later than that of th...

Embodiment 2

[0016] Example 2 Jingmai No. 9 hybrid wheat seed production (2017-2018)

[0017] The experiment site was a thousand-mu hybrid wheat field in Yaodian Town, Dengzhou, Nanyang City, Henan Province, and a comparative experiment was set up in the same field. The male parent is Jingmai No. 9, and there are two treatments of melatonin spraying and no melatonin spraying as control. The treatment area of ​​each test is 30m 2 , repeated 3 times, with a total test area of ​​180m 2 .

[0018] Affected by the local low temperature from March to April, the earing and flowering period of the male parent is predicted to be 4 days later than that of the female parent. When the flag leaves of the male parent were fully unfolded by 50%, the male parent of Jingmai No. 9 was sprayed with 0.3% melatonin solution once 1 hour before sunset, and it was completed on the same day.

[0019] The male parent was investigated 20 days after flowering. In the treatment of spraying melatonin, the flowering...

Embodiment 3

[0021] Example 3 Jingmai No. 9 hybrid wheat seed production (2018-2019)

[0022] The experiment site was a thousand-mu hybrid wheat field in Yaodian Town, Dengzhou, Nanyang City, Henan Province, and a comparative experiment was set up in the same field. The male parent is Jingmai No. 9, and there are two treatments of melatonin spraying and no melatonin spraying as control. The treatment area of ​​each test is 30m 2 , repeated 3 times, with a total test area of ​​180m 2 .

[0023] Affected by the local rainfall in April, the panicle differentiation period predicts that the heading and flowering of the male parent will be 3 days later than that of the female parent. When the flag leaves of the male parent were fully unfolded by 50%, the male parent of Jingmai No. 9 was sprayed with 0.3% melatonin solution 1 hour before sunset.

[0024] The results showed that after the treatment of spraying melatonin, the flowering period of the male parent was 0.5 days earlier than that of...

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Abstract

The invention belongs to the field of agricultural biology, and in particular relates to a method for stabilizing the yield of two-line hybrid wheat seed production. The method of the present invention comprises the following steps: after the parent parent of seed production enters the young panicle differentiation, observe the encounter situation at the flowering stage at the booting stage; Before the leaves are fully unfolded by 50%, within 1 hour before sunset in the evening, spray the melatonin solution with a concentration of 0.3% on the position of the flag leaf of the male parent once. By adjusting the flowering period of the male parent, the present invention realizes the meeting of the flowering period of the parental parent, effectively solves the problem of unsatisfactory meeting of the flowering period of the two-line hybrid wheat seed production caused by external environmental factors, and finally achieves the improvement of the outcrossing seed setting rate of the female parent and the stable production production purpose.

Description

technical field [0001] The invention belongs to the field of agricultural biology, and in particular relates to a method for stabilizing the yield of two-line hybrid wheat seed production. Background technique [0002] Hybrid wheat is considered to be the first choice for greatly increasing wheat production in the future, and it is also one of the focuses of international agricultural high-tech and modern seed industry competition. [0003] The seed production of the two-line hybrid wheat technology adopts light-temperature-sensitive male sterile wheat as the female parent and common wheat as the male parent. Among them, the photothermosensitive male sterile wheat is nuclear genetic male sterile, which has the advantages of stable growth and development process, glomerulation is mainly affected by light, good glomerulation traits, long glucination time, large glucination angle, and long stigma vigor The key indicators of male parent selection are all based on the female par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01G22/20A01G7/06
CPCA01G7/06A01H1/02A01G22/20
Inventor 张胜全王拯赵昌平张风廷高建刚陈兆波叶志杰任立平高新欢
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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