Light and simplified seed production method of small-grain hybrid rice and small-grain hybrid

A technology for simplifying seed production and hybrid rice, which is applied in the fields of botany equipment and methods, plant gene improvement, application, etc., can solve the problems affecting the popularization and application of hybrid rice and high cost of seed production, and achieve excellent agronomic traits, simple operation, different good delivery performance

Active Publication Date: 2022-07-01
HUNAN AGRICULTURAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a light and simplified seed production method of small-grain hybrid rice and small-grain hybrid rice to solve the technical problems in the prior art that hybrid rice seed production costs are high and affect the popularization and application of hybrid rice

Method used

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  • Light and simplified seed production method of small-grain hybrid rice and small-grain hybrid
  • Light and simplified seed production method of small-grain hybrid rice and small-grain hybrid
  • Light and simplified seed production method of small-grain hybrid rice and small-grain hybrid

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Embodiment 1

[0061] A small-grained indica two-line hybrid rice variety obtained by crossing Zhuo 201S as the female parent and Bing 4114 as the male parent was planted as one-season mid-season rice in the middle and lower reaches of the Yangtze River. In 2017 and 2018, the local microclimate environment was selected for light and simplified seed production in Huaihua Jingzhou, which is conducive to two-line rice seed production, convenient irrigation and drainage, flat fields and uniform fertility, and good natural isolation conditions.

[0062] The hybrid seed production method adopts the male parent throwing seedlings and the female parent live broadcast mode. The male parent buds are 0.2kg / mu and the dry grains are 0.1kg / mu. They are mixed and sown in the throwing trays on May 12 to cultivate strong seedlings; On June 2, the bud valley was broadcast live, and the seed amount was 1.25kg / mu.

[0063] Before sowing the female parent, the field was deeply ploughed and soaked in deep water ...

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Abstract

The invention discloses a light and simplified seed production method for small-grain hybrid rice and a small-grain hybrid, comprising the following steps: 1) using Bing4114 as the male parent to cultivate strong seedlings; 2) using the small-grain sterile line Zhuo 201S For the female parent direct seeding in the field, while the male parent after the strong seedlings in step 1) is thrown into the field with the female parent; 3), after the maturation, the male parent and the female parent are mixed and harvested, and small-grain hybrids are obtained through screening and separation . The light and simplified seed production method of the small-grain hybrid rice of the present invention, by selecting B4114 with high combining ability, strong disease resistance and homozygous genotype as the male parent, has high stigma exposure rate, good outcrossing characteristics and excellent agronomic characters. The small-grain sterile line Zhuo 201S is a hybrid seed production of female parent mixed seeding, and a high-yield, high-quality, disease-resistant rice small-grained hybrid is obtained. The seeds are separated, so as to realize the light and simplified seed production of small-grain hybrids.

Description

technical field [0001] The invention relates to the field of hybrid rice seed production, in particular to a light and simplified seed production method for small-grain hybrid rice. In addition, the present invention also relates to a small-grained hybrid obtained by a light and simplified seed production method comprising the above-mentioned small-grained hybrid rice. Background technique [0002] Hybrid rice seed production is an important guarantee for the large-scale promotion of hybrid rice. my country's hybrid rice seed production technology has matured as early as 1985. The early seed production was based on three-line matching, using sterile lines and restorer lines to produce seeds. Later, with the development of two-line technology, it developed The supporting two-line seed production technology is based on the principle of using the cytoplasmic male sterile line as the female parent, and the restorer line of the male parent in a certain proportion for branch plant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 唐文帮邓化冰陈桂华张桂莲王悦
Owner HUNAN AGRICULTURAL UNIV
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