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Method for breeding Zhen dao No. 13 using ladder polymerization improved technique

A town rice and step technology, which is applied in the field of breeding Zhen Dao 13 using the step polymerization improvement technology, can solve the problems of unsatisfactory quality of resistant varieties and resistance to stripe leaf blight.

Inactive Publication Date: 2008-11-12
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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Problems solved by technology

In recent years, with the change of farming system, rice stripe blight has been increasing year by year. Most of the existing main varieties are not resistant to stripe blight, and the quality of the limited few resistant varieties is not ideal. Therefore, the selected Breeding resistant to stripe leaf blight, high-quality, high-yielding japonica rice varieties is an important goal of rice breeding in Jiangsu Province

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  • Method for breeding Zhen dao No. 13 using ladder polymerization improved technique
  • Method for breeding Zhen dao No. 13 using ladder polymerization improved technique

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Embodiment

[0024] 1) In 1992, a medium-maturing medium-japonica Japanese variety Kanto 135 with early maturity and high quality (good appearance and good taste) was selected as the female parent, and a late-maturing medium-japonica Nuozhen with high yield and good taste was selected as the female parent. Rice 2 was crossed and got F 0 60 seeds that is F 0 ;Choose a mid-maturing medium-japonica Japanese cultivar Yue の 光 which has early maturity, high quality (both good appearance quality and good eating quality), and resistance to rice stripe leaf blight as the female parent, and a high-quality, high-yield, blast-resistant variety F 0 '72 seeds are F 0 ';

[0025] 2) F in 1993 0 and F 0 'Soak the seeds to accelerate germination and sow the seeds, remove the impurities and harvest the seeds F 1 and F 1 ';

[0026] 3) F in 1994 1 and F 1 ’ Soak the seeds to accelerate germination and sow, and plant 1,200 plants in a single plant. Only the insects are treated but not the disease. T...

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Abstract

The present invention discloses a breeding method of Zhendao 13 by step polymerization improvement technique, the rice bred by the method has the advantages of excellent quality, good taste, good rice marketability, outstanding disease resistance, good productivity and yield stability, harmonious ear-granule structure, self-adjusting ability, nice plant type and good maturing phase. The method described by the present invention comprises the following steps: A) selecting Japanese variety Guandong 135 as maternal plant to hybridize with Zhendao 2, obtaining Zhendao 72 after 4 generations inbred; B) selecting Japanese variety tsukinohikai as maternal plant to hybridize with Wuxiangjing 1, obtaining Zhendao 5088 after 4 generations inbred; C) selecting Zhendao 5088 as maternal plant to hybridize with Zhendao 72, obtaining 70 F0 seeds; D)seeding the F0 after seed soaking and pregermination, then selecting Wuyunjing 8 as maternal plant to perform multiple crossing, obtaining new rice variety namely Zhendao 13 having the advantages of high yield, good quality, stripe rust resistance and rice blast resistance.

Description

technical field [0001] The invention relates to a plant breeding method, in particular to a breeding method for breeding Zhendao No. 13 by using step polymerization improvement technology. 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 90% 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. With the improvement of people's living standards, the adjustment of planting structure and the pressure of international market competition, the improvement of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01H5/00
Inventor 盛生兰景德道林添资刁立平胡春明张继本钱华飞龚红兵周义文余波李闯顾炳朝岳绪国陈全庚杨军曹宏王克明
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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