Breeding and hybrid seed-producing method of onion male sterile line

A male sterile line and hybrid seed production technology, which is applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of breeding male sterile line of onion, and achieve accelerated breeding process, good economic traits, Pairing combinations for a wide range of effects

Inactive Publication Date: 2011-06-22
VEGETABELE INST AGRI SCI ACAD SHANXI PROV
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  • Breeding and hybrid seed-producing method of onion male sterile line

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[0019] In the first year, 15 sterile plants were found out of 2400 plants in the red onion field in Taiyuan. The sterile plant rate was 0.625%. The pollen was aborted, and the stamens gradually shriveled. Immediately paired with 23 fertile plants of the same species, 23 pairs of paper bags were placed, and the pollination was hybridized by vibration every morning and afternoon, and the male parent was selfed. After the seeds mature from late July to early August, the seeds are harvested and numbered separately according to the parents.

[0020] In late January of the second year, all the paired materials were sown and raised in Yangqi according to the number. In early and mid-April, the field was planted, and field management was strengthened. In late July, the onions were grown and harvested. Petals and bulbs without diseases and insect pests are used as seed plants, and 20 to 40 plants are selected for each pair of parents. Store in a ventilated, dry and cool room for the s...

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Abstract

The invention discloses a breeding and hybrid seed-producing method of an onion male sterile line, which comprises the steps of: with a natural sterile Taiyuan red skin onion as a female parent and a fertile Taiyuan red skin onion as a male parent, hybridizing to obtain a first-filial generation; selecting a sterile plant from the first-filial generation, carrying out multi-generation continuous back crossing by using the sterile plant as a female parent and a completely-fertile Taiyuan red skin onion as a recurrent parent to breed an onion male sterile line Jin research 1A, and continuously selfing by using the completely-fertile Taiyuan red skin onion to obtain a maintainer line Jin research 1B; and with the onion male sterile line Jin research 1A as the female parent and a Shuozhou red skin onion as a restorer, hybridizing to obtain a hybrid Jin hong No 6. The breeding and hybrid seed-producing method has the advantage of wide pairing combination; the early generation has combinations with good economic characters and high sterile plant rate to be selected; the breeding process can be accelerated objectively, and the good sterile plant with the sterile plant rate being stabilized to be 100 percent and the maintainer line thereof can be bred early.

Description

technical field [0001] The invention relates to vegetable hybrid breeding and a method for utilizing heterosis, in particular to a method for breeding male sterile lines of onions and a method for hybrid seed production using the male sterile lines. Background technique [0002] onion( Allium cepa L.) has another name called onion and onion, and has a cultivation history of more than 4,000 years according to records. Onions are biennial diploid (2n=2x=16) plants belonging to the Liliaceae ( Liliaceae ) Allium ( Allium )crop. From the study of multiple liliaceous plants at the molecular level, it was found that the closest species to onions is A. vavilovii , no wild onions were found. according to A. vavilovii And the distribution of other closely related species, Hanelt believes that onions originated in Turkmenistan and Iran. [0003] Onion is one of the earliest vegetable crops bred and used in production. First-generation hybrids can generally increase yield b...

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Application Information

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IPC IPC(8): A01H1/02
Inventor 刘洪炯马蓉丽吴海涛焦彦生
Owner VEGETABELE INST AGRI SCI ACAD SHANXI PROV
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