Abstract: [Objective and Method]Five yield traits of 6 parents and their 15 F_1 crosses (6×6) of Sea island cotton were analyzed by the genetic model of additive-dominance effect by MINQUE(1) approaches. [Result]The results indicated that there existed highly significant additive effect on boll number, lint percentage and lint yield per plant (except for boll weight), highly significant dominance effect on boll number, boll weight and lint percentage (except for lint yield per plant ). [Conclusion]There was a significant positive super-parant heterosis in the average genetic performance of boll number and lint percentage, but there was no positive population advantage in the yield of boll weight and lint percentage per plant.

摘要： [目的]新疆自育海岛棉品种间F_1产量性状的杂种优势,为育种提供理论依据.[方法]采用MINQUE(1)统计方法,利用AD模型对6个海岛棉品种及其15个 F_1组合4个产量性状进行遗传分析.[结果]海岛棉自育品种间杂交,除铃重不具有加性效应外,铃数、衣分和单株皮棉产量均存在极显著的加性效应;铃数、铃重、衣分存在极显著的显性效应,而单株皮棉产量不存在显性效应.[结论]F_1和F_2铃数和衣分的平均遗传表现为极显著的正向超亲优势,铃重和单株皮棉产量无正向群体平均优势.