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Breeding method of corn sterile line 07HY1A

A technology of corn and strains, applied in the field of crop genetics and breeding, can solve the problems of increasing the cost of seed production, affecting the quality of seeds, and reducing the purity of hybrids, and achieves the effects of rapid promotion, accelerated breeding progress, and good results

Inactive Publication Date: 2017-01-04
山西省农业科学院谷子研究所
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Problems solved by technology

The use of conventional seed production methods to prepare hybrids requires manual detasseling of the female parent, which will result in a decrease in the purity of the hybrid, and due to the potential risk of not timely and incompletely affecting the quality of the seeds, large-scale production will be reduced in production; not only will it cost a lot of Labor, increased seed production costs; caused significant taboo losses

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  • Breeding method of corn sterile line 07HY1A

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Embodiment 1

[0020] A method for breeding a corn sterile line 07HY1A, comprising the following steps:

[0021] The first step, in the first spring in Shanxi, select 10 plants from the maize stable inbred line 07HY and strictly self-cross at 6:00 p.m. Cut off the top of the ear with scissors about 1cm, and then drop the prepared EMS solution with a concentration of 0.2% onto the flat opening of the ear top with a dropper until the solution does not seep. After 1 hour, repeat the drip once ; Mix the seeds of 10 ears harvested in autumn to get M0;

[0022] Step 2: In the winter of the first year, plant 0.05 hectares on demand at a planting density of 75,000 plants / ha in Hainan, and look for sterile plants in the group; number the sterile plants with male flowers aborted; fertile inbred lines 07HY selects the corresponding number of plants, collects the pollen of the corresponding number and divides it into two parts, one part is used for self-fertilization, and the other part is used for pol...

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Abstract

This invention provides a breeding method of corn sterile line which relates to crops heredity and breeding industry. Stable corn self-bred line 07HY is used as basic materials to conduct EMS mutation breeding to get sterile plant and use fertile self-bred 07HY to pollinate it. Then plant sterile line and its corresponding fertile line alternatively in Shangxi and Hainan in three consecutive years and select stable sterile line to get line 07HY1A. its tassel can grow normally but the shell will not crack and make no pollen so it can't breed by itself. it must pollinated by sterile line to keep its purity. This breeding method is reasonable, effective and feasible with good effect. The alternative cultivation in both northern and southern part speed up the breeding process.The cost can be saved by 10-15% by using its first hybridization and reasonable decrease in price will help to promote this new product.

Description

technical field [0001] The invention discloses a method for breeding a corn sterile line 07HY1A, belonging to the technical field of crop genetics and breeding. Background technique [0002] The use of heterosis has greatly increased the yield of maize, and the use of male sterile lines for seed production is an effective method to ensure the purity of seeds and increase the yield of maize. The use of conventional seed production methods to prepare hybrids requires manual detasseling of the female parent, which will result in a decrease in the purity of the hybrid, and due to the potential risk of not timely and incompletely affecting the quality of the seeds, a large area of ​​production will be reduced; it will not only consume a lot of Labor, increased seed production costs; caused a lot of taboo loss. Therefore, improving the purity of hybrid seeds is an urgent problem to be solved in current corn production, and using male sterile lines for seed production is one of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 郑向阳李会霞王国平郑植尹王高鸿赵晋峰王秋兰
Owner 山西省农业科学院谷子研究所
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