Fast and efficient corn shuttle pedigree breeding process
A corn, high-efficiency technology, applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc., can solve the problems of not meeting the needs of corn variety replacement, affecting the production and development of corn, and long breeding cycle, reducing planting scale, The effect of improving breeding efficiency and speeding up the generation process
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[0022] 1. Breeding of inbred line K236 and hybrid Zhenghong 2:
[0023] The first year (1998): Spring and summer in Sichuan (northern season, referred to as Sichuan, the same below): Plant 100 plants of the American Corn Belt germplasm 3163 basic material according to the requirements of breeding objectives, and select robust growth, good plant type, and disease resistance 20 strong excellent plants were bagged and self-bred, and 10 excellent S plants were harvested 1 Fruit ears, do a good job in genealogical records.
[0024] Autumn and winter in Hainan (against the season in the south, referred to as Hainan, the same below): planting S by ear 1 , 40 plants were planted in each panicle row, and 5-10 excellent plants with vigorous growth, strong resistance and good plant type were selected for each panicle row to obtain S 2 ; Plant some excellent inbred lines such as 48-2 as the parents of the test species, use pollen to test cross with 3-5 excellent backbone inbred lines re...
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