Breeding method of 60co gamma ray radiation of brome awnless

A technology of brome without awns and mutation breeding, which is applied in the field of forage biotechnology breeding, can solve the problems of narrow genetic background of parents, difficulty in producing major breakthroughs, and limited improvement potential, etc., and achieves wide adaptability, rich types, resistance The effect of improved sexual synchrony

Inactive Publication Date: 2011-12-07
PRATACULTURE INST HEILONGJIANG ACAD OF AGRI SCI
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AI Technical Summary

Problems solved by technology

Due to long-term artificial selection and over-concentration of backbone parents in conventional cross-breeding methods, the genetic background of the parents is narrow
The improvement potential of the recombinant progeny is very limited, it is difficult to make a major breakthrough and the breeding cycle is as long as 8-9 years

Method used

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  • Breeding method of 60co gamma ray radiation of brome awnless

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Embodiment Construction

[0022] The specific breeding process of the present invention will be described below by taking the breeding map of Nongjing No. 6 Bromegrass as an example.

[0023] 1. Quarantine and identification of imported varieties: In 2001, the awnless brome variety "Nica" will be introduced from the feed crop research in Pleven, Bulgaria.

[0024] 2. Irradiate homozygous seeds, determine the optimal radiation dose and select mutant plants: in 2002, the full-grained seed "Nica" was selected and carried out in the Radiation Breeding Research Center of the Institute of Atomic Energy, Heilongjiang Academy of Agricultural Sciences 60 Coγ-ray radiation, the radiation dose was 20, 30, 40, 50, 100, 200, 300Gy, the irradiated seeds were planted in the field in the same year, the row spacing was 60cm, the plant spacing was 30cm, and the unirradiated original parents were used as the control. The first-generation seeds for radiation mutagenesis are harvested from individual plants and stored sepa...

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Abstract

The invention discloses a method for 60Co gamma ray radiation breeding of brome awnless. The steps are: 1) quarantine and identification of introduced varieties; 3) Select beneficial mutant strains and add local main varieties as the second control; 4) Perform genetic stability and yield, quality, resistance, and adaptation for excellent mutations in the 3rd and 4th generations. 5) Selection of mutant lines with excellent comprehensive traits and high yield. The invention selects and breeds a high-yielding, high-quality, high-resistance new brome variety Nongjing No. 6 suitable for planting in Heilongjiang within a relatively short breeding period, and the breeding period is 2-3 years shorter than conventional hybrid breeding.

Description

1. Technical field [0001] The invention belongs to the field of herbage biotechnology breeding, and more specifically relates to a method for radiation mutation breeding of awnless brome, in particular to a method for awnless brome seed breeding 60 Co gamma ray radiation induces mutations in the offspring, so that a large number of mutated plants are obtained through breeding, and a method of breeding high-quality new varieties of awnless brome in combination with biological traits, quality, and resistance. 2. Background technology [0002] Radiation mutation breeding, as well as the method of breeding crops combined with other technologies, has been recognized by scholars at home and abroad today, and has become one of the important breeding methods. Its outstanding feature is to break the genetic background (old linkage) and create new genetics. Gene mutations are unique in breeding agronomic traits such as early maturity, disease resistance, high yield and improved qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/06A01H1/04A01C1/00
Inventor 韩贵清张月学申忠宝潘多锋唐凤兰王建丽张瑞博李道明尚晨韩微波蒿若超刘杰淋刘凤歧陈积山杨国伟杜优颖
Owner PRATACULTURE INST HEILONGJIANG ACAD OF AGRI SCI
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