Selection method for two-line sterile line of anti-disease and stable-fertility light-leaf rice

A rice fertility technology, applied in the field of cultivating fine rice varieties, can solve problems such as unstable fertility and poor rice blast resistance, and achieve the effects of stable fertility, improved quality, and high rice quality

Active Publication Date: 2018-11-20
福建省农业科学院水稻研究所
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing two-line male sterile line having unstable fertility and poor resistance to rice blast, the present invention provides a method for breeding two-line male sterile line of light leaf color rice with disease resistance and stable fertility. Through optimal blast resistance screening, fertility screening and rice quality screening, the selected rice varieties can have the advantages of easy removal of impurities, resistance to rice blast, stable fertility, and good rice quality

Method used

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  • Selection method for two-line sterile line of anti-disease and stable-fertility light-leaf rice

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Embodiment 1

[0032] A method for breeding two-line male sterile lines of light leaf color rice with disease resistance and stable fertility according to the present invention comprises the following steps carried out in sequence,

[0033] (1) Warm soup emasculation method hybridization: use ES411 as the female parent P1, RGD-7S as the male parent P2, and adopt the warm soup emasculation method to hybridize to obtain rice plants;

[0034] (2) Preliminary screening to obtain a single plant of light leaf color rice: Sow the seeds of the rice plants obtained in the previous step after soaking and accelerating germination, after backcrossing with the female parent P1 variety, bagging and selfing, after harvesting the seeds for planting, select one of them The rice single plant with light leaf color is bagged and selfed again, and then the seeds are harvested for planting, and then the rice single plant with light leaf color, long grains, short and straight flag leaves, and plant height not excee...

Embodiment 2

[0041] A method for breeding two-line male sterile lines of light leaf color rice with disease resistance and stable fertility according to the present invention comprises the following steps carried out in sequence,

[0042] (1) Warm soup emasculation method hybridization: use ES411 as the female parent P1, RGD-7S as the male parent P2, and adopt the warm soup emasculation method to hybridize to obtain rice plants;

[0043] (2) Preliminary screening to obtain a single plant of light leaf color rice: Sow the seeds of the rice plants obtained in the previous step after soaking and accelerating germination, after backcrossing with the female parent P1 variety, bagging and selfing, after harvesting the seeds for planting, select one of them The rice single plant with light leaf color is bagged and selfed again, and then the seeds are harvested for planting, and then the rice single plant with light leaf color, long grains, short and straight flag leaves, and plant height not excee...

Embodiment 3

[0051] A method for breeding two-line male sterile lines of light leaf color rice with disease resistance and stable fertility according to the present invention comprises the following steps carried out in sequence,

[0052] (1) Warm soup emasculation method hybridization: use ES411 as the female parent P1, RGD-7S as the male parent P2, and adopt the warm soup emasculation method to hybridize to obtain rice plants;

[0053] (2) Preliminary screening to obtain a single plant of light leaf color rice: Sow the seeds of the rice plants obtained in the previous step after soaking and accelerating germination, after backcrossing with the female parent P1 variety, bagging and selfing, after harvesting the seeds for planting, select one of them The rice single plant with light leaf color is bagged and selfed again, and then the seeds are harvested for planting, and then the rice single plant with light leaf color, long grains, short and straight flag leaves, and plant height not excee...

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Abstract

The invention relates to a selection method for a two-line sterile line of anti-disease and stable-fertility light-leaf rice. The selection method comprises the following steps: (1) decoction asexualhybridization; (2) preliminary screening for obtaining a single light-leaf rice plant; (3) screening of a variety. The selection method overcomes the shortcomings of low fertility stability and low rice blast resistance of an existing two-line sterile line; through preferable rice blast resistance screening, fertility screening and rice quality screening in sequence, a selected rice variety has the advantages of easy removal of debris, rice blast resistance, stable fertility and high rice quality.

Description

technical field [0001] The invention relates to a method for selecting a two-line male sterile line of light-leaf color rice with disease resistance and stable fertility, which is applied in the field of cultivating fine rice varieties. Background technique [0002] Rice cultivation in China has the longest history. my country's rice breeding has experienced three revolutions: the dwarf breeding in the 1960s increased the rice yield in my country by 30%; the three-line hybrid rice successfully bred in the 1970s increased the yield by 20% compared with the dwarf rice; The two-line hybrid rice invented in the 1990s has improved the yield and quality of hybrid rice in my country, and successfully achieved the three-phase breeding goal of China's super rice breeding program with a yield of 700 kg, 800 kg, and 900 kg per mu. Super hybrid rice is an organic combination of super high yield, high rice quality and strong resistance. "Two-line hybrid rice technology research and appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 周鹏涂诗航董瑞霞王洪飞陈春霞张水金游晴如郑家团黄庭旭郑菲艳
Owner 福建省农业科学院水稻研究所
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