Japonica type hybridized rice high production breeding method

A hybrid rice, high-yield technology, applied in rice cultivation, fertilization methods, botanical equipment and methods, etc., can solve the problems of low seed production yield and high seed cost, and achieve the effect of sufficient time for adjustment

Inactive Publication Date: 2008-03-26
辽宁省稻作研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a high-yield seed production technology for japonica hybrid rice, which fundamentally solves the problems of low seed production yield and high seed cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In 2004, this method was used to produce Liaoyou 1052 in Liaoyang, with an area of ​​400 mu, and the final average seed yield reached 265 kg / mu.

[0042] 1. Variety selection

[0043] For seed production, Liaoyou 1052 was selected as the variety, the male parent C52 had a sowing period of 110 days, and the female parent 105A had a sowing period of 105 days. The sowing period of the male parent is longer. Combined with the local climate conditions in Liaoyang, the rainy season is in late July. It can be determined that the male parent can be sown after April 20 to avoid the rainy season. According to the sowing date of the parent parent, combined with the staged sowing experiments over the years, it can be determined that the sowing date of the female parent is 10 days later than that of the male parent, and it is sown on April 30. Mark the leaf age before transplanting. When transplanting, the leaf age of the male parent is about one leaf larger than that of the female...

Embodiment 2

[0055] In 2004, this method was used to produce Liaoyou 9952 in Liaoyang, with an area of ​​200 mu, and the final average seed production reached 245 kg / mu.

[0056] 1. Variety selection

[0057] Liaoyou 9952 was selected as the variety, the male parent C52 had a sowing duration of 110 days, and the female parent 99A had a sowing duration of 110 days. The sowing period of the male parents is the same, combined with the local climate conditions in Liaoyang, the rainy season is in late July, so it can be determined that the parents sow after April 20 to avoid the rainy season. According to the sowing period of the parents, combined with the staged sowing experiments over the years, it can be determined that the sowing period of the parents is the same. Mark the leaf age before transplanting, and the leaf ages of the parents are basically the same when transplanting.

[0058] 2. When sowing, it should be sown thinly, and the amount of seeds per square meter should not exceed 20...

example example 3

[0068] In 2005, this method was used to produce Liaoyou 1052 in Liaoyang, with an area of ​​400 mu, and the final average seed yield reached 270 kg / mu.

[0069] 1. Variety selection

[0070] Liaoyou 1052 was selected as the variety, the male parent C52 had a sowing duration of 110 days, and the female parent 105A had a sowing duration of 105 days. The sowing period of the male parent is longer. Combined with the local climate conditions in Liaoyang, the rainy season is in late July. It can be determined that the male parent can be sown after April 20 to avoid the rainy season. According to the sowing date of the parent parent, combined with the staged sowing experiments over the years, it can be determined that the sowing date of the female parent is 10 days later than that of the male parent, and it is sown on April 30. Mark the leaf age before transplanting. When transplanting, the leaf age of the male parent is about one leaf larger than that of the female parent.

[0071] ...

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PUM

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Abstract

The present invention relates to a round-grain type hybrid rice high-yield seed-breeding method. Said method mainly includes the following steps: flower stage design, constructing high-yield population, flower stage prediction, flower stage regulation and artificial pollination.

Description

technical field [0001] The invention belongs to a hybrid japonica seed production method. The method involves flowering design, flowering prediction, flowering adjustment, artificial pollination technology and other aspects. technical background [0002] The cultivation area of ​​hybrid rice in my country accounts for about 50% of the country's rice cultivation area. Compared with conventional rice varieties, hybrid rice can generally increase production by about 10%. The development and promotion of hybrid rice has been recognized as an important milestone in the history of modern rice breeding in my country. However, rice is the same as other crops, the strength of heterosis is subject to the level of genetic differentiation of parental genes, so the yield level has not broken through, especially the japonica hybrid rice, since the realization of three-line matching in the 1970s, the seed production yield is low 1. The problem of high seed cost has always been one of the im...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01G16/00A01C21/00A01G22/22
Inventor 张忠旭华泽田李全英王彦荣郝宪彬
Owner 辽宁省稻作研究所
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