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区域试验是新品种选育的重要环节和审定的主要依据。区域试验制度既要有利于对新品种的科学评价,又要满足育种工作的需要和利于新品种的产生。 新疆棉花区域试验一直采用统一组织、分亚区按轮进行,每轮开始时确定参试品系,连续三年,结束时进行综合评定,而后开始下轮工作。此法的优点是参试品系具有相对稳定性和连续性。但对个别适应性明显差、综合性状不良的品系不能及时淘汰,育种单位在每轮区域试验期间培育出的优良品系也不能及时进行区域鉴定,若一轮结束后无合格品系,则该亚区至少在6年内不会有
Regional trials are an important part of new breed breeding and validation of the main basis. Regional trial system should not only help the scientific evaluation of new varieties, but also to meet the needs of breeding work and benefit the emergence of new varieties. Xinjiang cotton regional trial has been using a unified organization, sub-sub-region according to the round, the beginning of each round to determine the test line, for three consecutive years, at the end of a comprehensive assessment, and then start the next round of work. The advantage of this method is that the test strains have relative stability and continuity. However, individuals with poor individual adaptability and comprehensive trait can not be eliminated in a timely manner, and fine lines developed by breeding units during each round of regional trials can not be identified in time. If there is no qualified line after one round, There will not be at least six years