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Method for increasing harvesting quantity of breed F1 by using tiller regeneration capacity of paddy rice

A regenerative ability and rice technology, applied in the field of rice genetics and breeding, can solve the problems of small number of F1, reduced number of harvests, reduction of excellent rice germplasm resources and success rate of new varieties, etc.

Inactive Publication Date: 2020-07-07
黑龙江省农业科学院绥化分院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of parental hybridization, often due to factors such as parental incompatibility, nature and man-made, hybrid grains (F 0 ) with a lower harvest quantity, which in turn leads to F 1 If the number is small, the number of harvests in autumn will also decrease, making it difficult to form a larger offspring group, reducing the chances of successful breeding of excellent rice germplasm resources and new varieties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Using conventional methods, using Suijing No. 4 as the female parent and Suijing No. 3 as the male parent, harvest the corresponding hybrid rice according to the hybrid combination, and perform threshing to obtain hybrid grains (F 0 );

[0025] 2) Sowing

[0026] Select the hybrid grain (F 0 ), in the artificial climate chamber according to the combination in the pot seedling tray for sowing, the sowing amount is one hybrid seed per hole in the hole of the pot seedling tray (F 0 ) for sowing; the artificial climate chamber simulates the local natural environment: the daily average temperature in the sowing environment is ≥12°C.

[0027] 3) Seedling management

[0028] After sowing, the hybrid grains (F 0 ) germination, managed according to the standards for cultivating strong seedlings of rice until the seedling age is 30 to 35 days, the leaf age is 3.5 to 4 pieces, the seedling height is 13±0.5cm, and the root number is ≥10, then enter the next step;

[0029] 4...

Embodiment 2

[0033] 1) Using conventional methods, using Longnuo 2 as the female parent and Suijing 3 as the male parent, the corresponding hybrid rice was harvested according to the hybrid combination, and threshed to obtain hybrid grains (F 0 );

[0034] 2) Sowing

[0035] Select the hybrid grain (F 0 ), in the artificial climate chamber according to the combination in the pot seedling tray for sowing, the sowing amount is one hybrid seed per hole in the hole of the pot seedling tray (F 0 ) for sowing; the artificial climate chamber simulates the local natural environment: the daily average temperature in the sowing environment is ≥12°C.

[0036] 3) Seedling management

[0037] After sowing, the hybrid grains (F 0 ) germination, managed according to the standards for cultivating strong seedlings of rice until the seedling age is 30 to 35 days, the leaf age is 3.5 to 4 pieces, the seedling height is 13±0.5cm, and the root number is ≥10, then enter the next step;

[0038] 4) Simulatio...

Embodiment 3

[0042] 1) Using conventional methods, using Suijing 10 as the female parent and Songjing 9 as the male parent, the corresponding hybrid rice was harvested according to the hybrid combination and threshed to obtain hybrid grains (F 0 );

[0043] 2) Sowing

[0044] Select the hybrid grain (F 0 ), in the artificial climate chamber according to the combination in the pot seedling tray for sowing, the sowing amount is one hybrid seed per hole in the hole of the pot seedling tray (F 0 ) for sowing; the artificial climate chamber simulates the local natural environment: the daily average temperature in the sowing environment is ≥12°C.

[0045] 3) Seedling management

[0046] After sowing, the hybrid grains (F 0 ) germination, managed according to the standards for cultivating strong seedlings of rice until the seedling age is 30 to 35 days, the leaf age is 3.5 to 4 pieces, the seedling height is 13±0.5cm, and the root number is ≥10, then enter the next step;

[0047] 4) Simulati...

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Abstract

The invention relates to the technical field of genetic breeding of paddy rice and particularly relates to a method for increasing a harvesting quantity of a breed F1 by using tiller regeneration capacity of paddy rice. The method comprises the steps of stripping all effective tillers from F0 plants, carrying out culture by utilizing a tissue culture technology, inducing root system growth, and carrying out plowland transplanting after complete plants are formed. According to the method for increasing the harvesting quantity of the breed F1 by using tiller regeneration capacity of the paddy rice, provided by the invention, through stripping all the effective tillers from the F0 plants, carrying out culture by utilizing the tissue culture technology, inducing root system growth, and carrying out plowland transplanting after the complete plants are formed, the quantity of breed filial generation materials can be enlarged, the selected rate of the filial generation materials is increased,and the efficiency of rice breeding is effectively increased.

Description

technical field [0001] The invention relates to the technical field of rice genetics and breeding, in particular to a method of using rice tiller regeneration ability to increase breeding F 1 A method of substituting harvest quantities. Background technique [0002] In the process of breeding new rice varieties, the dominant parent is used for hybridization, and the hybrid grains (F 0 ), sowing and harvesting F in the following year 1 , and accurate screening of its progeny lines year by year is an important way to breed high-quality, high-yielding, multi-resistant new rice varieties. However, in the process of parental hybridization, often due to factors such as parental incompatibility, nature and man-made, hybrid grains (F 0 ) with a lower harvest quantity, which in turn leads to F 1 If the number is small, the number of harvests in autumn will also decrease, making it difficult to form a large offspring group, reducing the success probability of excellent rice germpl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22A01G31/00A01H4/00
CPCA01G31/00A01H4/008A01G22/22
Inventor 聂守军刘宇强高世伟刘晴常汇琳马成张广彬景玉良刘宝海刘凯王翠玲谢树鹏徐建龙郑天清魏中华刘立超门龙楠薛英会白瑞孙中华宗天鹏单大鹏董晓慧王宝力闫春艳史淑春张成亮许佳莹徐明岩李广茂郝立冬
Owner 黑龙江省农业科学院绥化分院
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