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开始着手植物的育种,特别是棉花的育种,育种家注意到所选择的原始材料要具有综合的特性。大家知道,决定品种类型分布的因子是与该地区的气候条件有关,亦即其生长的时期。正是气候决定了是否能栽培晚熟、中熟或早熟中之一的情况的可能性。此外,甚至有着同样生长期的品种,根据某一阶段通过的速度(发育的长短时间),以及在成熟时期迅速的开絮可
Beginning with the breeding of plants, especially cotton, breeders noticed that the raw materials of their choice had a combination of properties. As we all know, the factors that determine the type distribution of cultivars are related to the climatic conditions of the area, that is, the period of their growth. It is the climate that determines the likelihood of cultivation of one of late ripening, medium ripening or precocity. In addition, even varieties with the same growth period, depending on the speed of passage at a given stage (the length of development) and the rapid opening at mature stages