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Method for breeding high-yield and disease-resistant glutinous rice

A high-yielding, glutinous rice technology, applied in the breeding of disease-resistant glutinous rice, high-yielding field, can solve the problems of rice stripe leaf blight, rice blast resistance degradation, low yield, etc., to achieve outstanding disease resistance, coordinated ear-grain structure, good production stability

Inactive Publication Date: 2012-01-04
江苏丰源种业有限公司
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AI Technical Summary

Problems solved by technology

[0003] Most of the glutinous rice varieties currently planted in Jiangsu Province have low yields, are susceptible to rice stripe blight, and have degraded resistance to rice blast

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0020] A) In 2003, the disease-resistant and high-yielding japonica rice was selected as the female parent, and the blast-resistant and high-yielding japonica rice was used as the female parent to obtain the F1 generation;

[0021] B) In the spring of 2004, the F 1 Generation (No. 10284) planted 20 plants in Hainan, self-crossed, hybridized and harvested, and obtained F 2 seed;

[0022] C) will dry F 2 The seeds of generation (No. 5692) are rough and shelled, the japonica rice is manually removed, and the glutinous rice is reserved for planting in the next season. The single plant with high roughness is F 3 generation;

[0023] D) the F 3 Generation (No. 5891) planted 12 strains for identification of rice stripe leaf blight and artificial inoculation for identification of bacterial blight. Taking high yield and appearance quality as indicators, 9 severely separated strains were eliminated according to population uniformity, and 15 strains were selected. get F 4 generati...

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Abstract

The invention discloses a method for breeding high-yield and disease-resistant glutinous rice, and belongs to a crop breeding method. The method disclosed by the invention comprises the following steps: selecting disease-resistant and high-yield japonica rice as a female parent, selecting blast-resistant and high-yield round-grain glutinous rice as a male parent, and hybridizing the japonica rice with the glutinous rice to obtain a generation F1; carrying out manual screening, rice stripe disease identification and bacterial leaf blight artificial inoculation identification, and selfing in a generation F5; and further screening by identifying bacterial leaf blight, rice stripe disease and rice blast, and identifying quality and taste so as to obtain a target variety. By adopting the breeding method disclosed by the invention, the bred glutinous rice has the advantages of excellent quality, good taste and good commodification; the selected waxy material has the advantages of good plant type, good ripe phase, strong disease resistance, strong yielding ability, good yield stability, coordinated grain structure and strong auto-regulation ability, and ripe stage is combined with taste quality during yield identification; and thousand seed weight of the bred material is more than 26g after screening for years.

Description

technical field [0001] The invention relates to a breeding method for crops, in particular to a breeding method for high-yield and disease-resistant glutinous rice. Background technique [0002] Rice is the largest crop in my country. There are two main subspecies of rice cultivated in my country, namely the indica subspecies and the japonica subspecies. The glutinous rice variety is a sticky variety of rice. 95~100% is amylopectin. Glutinous rice is rich in protein and fat, and has high nutritional value. It has become an indispensable product in our daily life and industrial production. According to the definition of GB1350-1999, japonica rice refers to the fruit of japonica-type non-waxy rice. The grain is generally oval, and the rice quality is relatively sticky and less swollen. Japonica glutinous rice: the fruit of japonica glutinous rice, brown rice is generally oval in shape, and the rice grains are milky white, opaque, and sometimes translucent and sticky. In recen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 景德道刁立平盛生兰林添资李闯余波钱华飞龚红兵周义文曾生元胡春明岳绪国
Owner 江苏丰源种业有限公司
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