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60Co gamma-ray radiation breeding method for awnless brome

A new technology of brome, applied in the field of forage biotechnology breeding, can solve the problems of narrow parental genetic background, difficult to make major breakthroughs, limited improvement potential, etc., and achieve wide adaptability, rich types, resistance to Synchronized improvements

Inactive Publication Date: 2010-09-29
PRATACULTURE INST HEILONGJIANG ACAD OF AGRI SCI
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  • Summary
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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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  • 60Co gamma-ray radiation breeding method for awnless brome

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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 60Co gamma-ray radiation breeding method for awnless brome, which comprises the following steps: 1) quarantining and identifying an introduced variety; 2) carrying out radiation-induced mutation on the introduced seeds, planting in a field, setting a radiated parent as a control, determining the optimal radiation dose and selecting a mutated individual plant; 3) selecting a beneficial mutant strain, and increasing a native variety as a second control; 4) carrying out hereditary stability, yield, quality, resistance and adaptivity identification on distinctive mutants in generation 3-4; and 5) selecting a mutant strain having excellent comprehensive characters and good yielding ability. The invention breeds a new awnless brome variety Nong Jing No.6 which has high yield, high quality and high resistance and is suitable for being planted in Heilongjiang in a shorter breeding cycle, and the breeding cycle is shortened by 2-3 years than the conventional hybridization breeding cycle.

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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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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