Breeding method of high-yield multi-resistance non-glutinous rice suitable for light simplified cultivation

A high-yield and multi-resistance technology, applied in the breeding field of high-yield and multi-resistance japonica rice, can solve problems such as directional aggregation of unfavorable target traits, and achieve the effects of fuller grains, more ear formation and better maturity.

Inactive Publication Date: 2012-03-28
江苏丰源种业有限公司
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AI Technical Summary

Problems solved by technology

Traditional breeding procedures will separate generations of selection in the same ecological (ecological) environment, which is not conducive to the directional aggregation of target traits

Method used

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Examples

Experimental program
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Embodiment Construction

[0018] A) In the summer of 2005, the late-maturing medium japonica town rice 697 was selected as the female parent for hybridization with high quality, resistance to stripe leaf blight, good yield, strong self-regulation ability of the population, tolerance to late sowing and planting, and medium and short stems. The early-maturing late-japonica Jiahe 218 with good plant and leaf shape, high quality, good taste, good ripeness, strong roots and stalks, strong bud vigor, and long grain was used as the male parent to obtain the hybrid F 1 ;

[0019] B) From the winter of 2005 to the spring of 2006, the F 1 Soak seeds in Hainan Ling water to accelerate germination, transplant, remove miscellaneous plants, and harvest enough F 2 of seeds (125 g).

[0020] C) May 10, 2006 to F 2 In Jurong, Jiangsu Province, it was sown early at the right time, planted in a single plant, and planted a group of about 2,000 plants. Selected 60 individual plants that were early-maturing, high-yield, ...

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Abstract

The invention discloses a breeding method of high-yield multi-resistance non-glutinous rice suitable for light simplified cultivation, which belongs to a breeding method of plant seeds. The method comprises the steps of generation segregation through early sowing at an early stage, screening through late sowing, high-density direct sowing, low-nitrogenous-fertilizer-level planting, direct sowing and mixed harvesting to obtain seeds which satisfy requirements. The rice bred through the method has the characteristics that the rice is suitable for light simplified cultivation, is high-yield and is multi-resistant. Under the transplanting condition of individual plants, the growth situation is good, the self-regulating capability is strong, the stem is robust, the rice is fertilizer-resistant and anti-falling, the rice can be directly planted in the early ten days and middle ten days of June, the spike length is generally and approximately 18cm, the number of productive spikes per mu can reach more than 200 thousand, the total grain number per spike is 130-140, the fruiting rate is above 90 percent, the weight per thousand grains is 27-28g, the rice grains are full, the commodity value is good and the processing quality is good.

Description

technical field [0001] The invention relates to a breeding method for plant seeds, in particular to a breeding method for high-yield and multi-resistant japonica rice which is suitable for light and simple cultivation. Background technique [0002] Rice is the largest crop in my country, and it is divided into two subspecies: indica and japonica. The planting areas of japonica rice are mainly distributed in the three northeastern provinces and Jiangsu, Zhejiang, Yunnan and Anhui, among which the three northeastern provinces and Jiangsu account for about 69% of the total area of ​​japonica rice in the country. It has a pivotal position and role. High-quality, high-yield, and multi-resistance have always been the primary breeding goals of japonica rice in my country; under the new production situation, light and simplified cultivation methods (machine-transplanted seedlings and direct-seeding rice) have gradually become the main cultivation methods in major japonica rice prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01H1/02A01G22/22
Inventor 林添资余波周义文景德道龚红兵盛生兰刁立平李闯钱华飞曾生元
Owner 江苏丰源种业有限公司
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