北疆主栽棉花抗旱性生育期差异评价及鉴定体系的初步建立  

Primary evaluation of drought resisitance and construction of identification system of cotton at different growth stages in Northern Xinjiang

作　　者：李志博[1] 林海荣[1] 魏亦农[1] 郗忠玲[1] 喻娟[1] 

机构地区：[1]新疆兵团绿洲生态农业重点实验室/石河子大学农学院,新疆石河子832003

出　　处：《干旱地区农业研究》2011年第3期84-90,共7页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金(30800695;30760124);石河子大学棉花育种专项

摘　　要：以北疆棉区主栽的棉花为材料,通过模糊隶属函数法对各材料在大田不同生育期及不同水分胁迫强度下的抗旱性差异进行了综合评价,以建立不同生育期的棉花抗旱性快速评价体系。结果表明,不同胁迫强度及不同生育期的棉花抗旱性评价结果并不完全相同:苗期抗旱性强的棉花为新陆早33号,盛蕾期为新陆早35号、晋棉13,花铃期为新陆早33号,吐絮期为新陆早24号和297-5;新陆早33号和新陆早31号在整个棉花生长季抗旱能力较强,而中棉42和益农2号在全生育期抗旱能力较差;苗期、盛蕾期、花铃期和吐絮期的棉花抗旱性综合评价的适宜水分胁迫强度分别为:轻度、轻度、中度和中度,适宜水分胁迫强度下相应的水分胁迫适宜处理时间分别为15 d1、5 d5、d和5 d,并以适宜水分胁迫强度和处理时间为基础建立了大田棉花抗旱性快速、准确评价的回归分析模型。In order to construct an efficient identification system for drought resistance of cotton at different growth stages,14 kinds of cotton widely planted in Northern Xinjiang were used as materials and evaluated by fuzzy subordination method in different water stress and different processing time.The results showed that drought resistance of the same cotton at different growth stages and under different water stress intensity was not completely identical.The cotton with stronger drought resistance was Xinluzao-6 at seedling stage,Xinluzao-35 and Jinmian-13 at full bud stage,Xinluzao-33 at flowering-boll stage,Xinluzao-24 and 297-5 at boll-opening stage.Drought resistance of Xinluzao-33 and Xinluzao-31 was stronger in the whole life-cycle,and that of ZMS-42 and Yinong-2 was weaker.The optimal water stress intensity of comprehensive evaluation of cotton drought resistance at seeding stage,full bud stage,flowering-boll stage and boll-opening stage were slight,slight,moderate and moderate,and the corresponding processing time was 15 d,15 d,5 d and 5 d.Finally,the model of stepwise regression equation for coefficient evaluation of cotton drought resistance was constructed on the basis of the optimal water stress degree and processing time.

关 键 词：棉花 抗旱性 模糊隶属法 鉴定体系 

分 类 号：S562.10[农业科学—作物学]