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Breeding process of rice blast-resisting high quality and high yield round-grained rice variety Zhendao-10

A technology for resistance to rice blast and japonica rice, which is applied in the directions of botanical equipment and methods, application, and plant genetic improvement, and can solve the problems of high yield performance limitation, low yield, and low yield.

Inactive Publication Date: 2007-08-22
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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Problems solved by technology

Most of the existing main varieties in Jiangsu are of poor quality, and the resistance to rice blast has also degraded. At the same time, the traditional high-quality japonica rice has small grains, and the thousand-grain weight is generally below 25 grams. Its high-yield performance is limited, and the yield is often not high. , more than 5% lower than the yield of main varieties

Method used

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  • Breeding process of rice blast-resisting high quality and high yield round-grained rice variety Zhendao-10

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Embodiment

[0019] 1) In the spring of 1998, Zhendao 99, a mid-maturing mid-maturing japonica rice variety with high yield and good palatability, was selected as the female parent, and 49 seeds were obtained by crossing with Zhen540, an indica-japonica progeny line with good appearance and quality. 1 ;

[0020] 2)F 1 Self-breeding: In 1998, 49 seeds were planted in 20 plants to remove impurities and 2 plants were harvested together, and the hulls were turned into brown rice, and the rice grains with white belly were removed, and the white brown rice without belly was left to be planted to obtain F 2 ;

[0021] 3)F 2 Inbred: F will be obtained in 1999 2 658 plants were planted, and 8 early-maturing and late-japonica plants were selected to obtain F 3 ;

[0022] 4)F 3 Inbred: F will be obtained in the winter of 1999 3 8 strains were planted, 4 strains were selected and a total of 23 strains were obtained to obtain F 4 , while from F 3 Start artificial inoculation to identify bacter...

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Abstract

The present invention discloses breeding process of rice blast-resisting high quality and high yield round-grained rice variety Zhendao-10. The breeding process breeds rice variety featuring high resistance to rice blast, high quality and high yield. The breeding process includes the following steps: 1. hybridizing Zhendao-99 hybrid rice variety with early maturing, high yield and good taste as the female parent and Zhen-540 hybrid rice variety with excellent appearance quality as the male parent to obtain F1; and 2. selfing with the F1 for six generations to obtain the rice blast-resisting high quality and high yield round-grained rice variety Zhendao-10.

Description

technical field [0001] The invention relates to a plant breeding method, more specifically to a breeding method for rice blast-resistant, extra-high-quality, high-yield japonica rice Zhendao No. 10. Background technique [0002] Rice is the largest crop in my country. There are two main subspecies of rice cultivated in China, namely the indica subspecies and the japonica subspecies. The japonica subspecies is mainly cultivated in Jiangsu, accounting for more than 80% of the rice planting area in Jiangsu. High-yield breeding has always been an important goal of rice breeding. Due to the large population in my country, the area of ​​arable land has decreased year by year, and the pressure on food demand has increased. High-yield breeding has long been given top priority, and research on improving rice quality has lagged behind. In recent years, with the improvement of people's living standards, the adjustment of planting structure and the pressure of international market comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 张继本刁立平林添资景得道盛生兰胡春明龚红兵周义文陈全庚顾炳朝岳绪国钱华飞李闯王瑾
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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