" circulate line selection in double direction " is a new selection procedure combined multiplication of seeds and development of new varieties 摘要“株系循环双向选优法”是将原品种繁殖与新品种选育相结合的新方法。
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It is differ both from the method of " circulate line selection " for seed reproduction and from the method of " pure line breeding " for varieties development 该方法既区别于单纯生产原种的“株系循环法” ，也区别于选育新品种的纯系育种法。
