Unlock instant, AI-driven research and patent intelligence for your innovation.

Selective breeding method and seed preparing method for Japonica rice variety

A variety and rice technology, applied in the field of japonica rice variety breeding, can solve the problems of high yield and high quality unification, rice quality decline, etc.

Inactive Publication Date: 2006-02-08
辽宁稻作研究所
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the introduction of indica rice germplasm, the quality of rice has declined, and it is difficult to unify high-yield and high-quality rice, which has become a major obstacle in the breeding of northern japonica rice

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Pedigree selection: In 1994, Liaojing 454 was used as the female parent and Shennong 9017 was the male parent. The common methods of conventional artificial detasseling and pollination of rice are used by those of ordinary skill in the art: select the female parent rice panicles that have been heading for two days, whole panicles, remove the already-opened spikelets and the tender spikelets at the lower part of the panicle, and detassel Then put the paper bag together with the father's head. At noon when the rice is full of flowers, knock the paper bag with external force for 3 days. Remove the paper bag in time after 20 days. The female parent seeds are harvested after maturity.

[0030] Plant F1 generation in 1995 and harvest F1 plant seeds as seeds for the next year;

[0031] F2 generation was planted in 1996. When harvesting, F2 generation plants were selected according to the breeding goals, and the selected plants were mixed and harvested as seeds for the next year;

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Breeding systematically and producing the new strain of round-shaped rice, Liaoxing 1 by applying the Liaojing 454 as female parent and the Shennong 9017 as male parent, emasculating artificially, pollinating and crossing. Liaoxing 1 is characterized by the strong root, robust stem, lodging resistant, and the mature pole of not pre-withering, compact plants, dark green of the leaf color, the strong growth potential, tillering with high power, and the resistant against rice blast, false smut and leaf blight. The quality of rice reaches B grade of the country better rice. The method is used for purification, rejuvenation, breeding the initial species and breeding the production species.

Description

Technical field [0001] The invention relates to a breeding method and a seed production method for a japonica rice variety, in particular to a breeding method and a seed production method for the japonica rice variety Liaoxing No. 1. Background technique [0002] Rice is the most important food crop in my country. Its area accounts for about 30% of the total area of ​​food crops, and its output accounts for 40% of the total food output. Since more than 50% of my country's population is based on rice as the staple food, to a certain extent, it can be said that the level of rice yield is the key to maintaining my country's population growth and social stability. As the world's largest rice producer and consumer, my country's rice cultivation and breeding research has always been at the forefront of the world. After the founding of the People’s Republic of China, due to the revolution in breeding technology, my country’s rice breeding and yield experienced two leaps. In the late 195...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 张燕之王昌华邹吉承
Owner 辽宁稻作研究所