BREEDING OF F1 HYBRID OF WHEAT HAVING HIGH YIELD

摘要

PURPOSE:To breed an F1 hybrid of wheat having high yield in high efficiency by using a wheat variety originated from new mediumlong grain variety having the number of grains per ear larger than that of wheat of SHIROGANE-variety as a parent and using a wheat variety originated from selection 14 having the number of grains per ear larger than that of TOBARI variety as the other parent. CONSTITUTION:A parent variety to form a mother stock (mother variety) is selected and the stamen of the variety is removed before pollination to prevent the pollination with own pollen. The castrated mother variety is grown by pollinating with pollen of other parent variety to form a father stock (father variety) (cross-pollination). The breeding of a high-yield variety can be easily and efficiently performed by combining a wheat variety originated from new medium-long grain variety having the number of grains per ear larger than that of wheat of SHIROGANE-variety with a wheat variety originated from selection 14 having the number of grains per ear larger than that of TOBARI variety. Yield higher than standard variety can be achieved under principally the same cultivation condition as conventional cultivation without using additional investment and labor for the improvement of the cultivation method and the pest-controlling method.