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一、引言 棉花育种同其他作物育种一样,都是由于生产的需要而发展起来的。古代劳动人民从无纤维或仅有短绒和少量纤维的野生棉种经驯化、人工选择产生现在的栽培种,把原来适应于热带、亚热带高温、短日、旱生的多年生习性,改变成适应于温带气候条件的光周期中性,甚至有限生长性的一年生习性,从而,植棉区域可以扩展到南北纬40度以上的广大地区。
I. INTRODUCTION Cotton breeding, like other crop breeding, was developed due to the needs of production. The ancient working people transformed and adapted the perennial habits adapted to the tropical, subtropical high temperatures, short days, and drought-born pests from the acclimatization of wild cotton species without fiber or only short fibers and few fibers to the present cultivated species by artificial selection In the temperate climatic conditions of the light cycle of neutral, or even limited annual growth habits, thus, cotton area can be extended to more than 40 degrees north latitude and vast areas.