陆地棉不同铃期和不同铃位成铃数杂种优势的遗传研究  

Genetic study on boll number at different blooming stages and fruiting sites in upland cotton. Journal of Zhejiang Agricultural University, 1998,24(4):339～343

作　　者：陈柏清[1,2] 陈青[1,2] 吴吉祥 

机构地区：[1]浙江省农业厅农作物管理局 [2]浙江农业大学农学系

出　　处：《浙江农业大学学报》1998年第4期339-343,共5页

基　　金：浙江省自然科学基金

摘　　要：采用加性－显性遗传模型，分析了１２个陆地棉亲本及其１７个Ｆ１组合两年不同铃期及不同铃位成铃数的杂种优势．结果表明：除７月２６日和８月３１日两期外，其余各铃期成铃数平均优势均极显著，其中立秋前成铃优势不断增强，立秋后成铃优势逐渐下降，尤以８月１３日至８月１９日下降明显，从１９．６％减至９．５％．各铃位成铃数中，只有上部铃位１和中部铃位１的成铃平均优势达显著水平．Twelve parents and their 17 F1′s hybrids of upland cotton (Gossypium hirsutum L.) were analyzed by an additivedominance genetic model with genotype by environment interaction and corresponding statistical approaches for boll number at different blooming stages and fruiting sites in two years. Significant heterosis was found for the number of bolls at different blooming stage except for those blooming before July 26 and after August 25. Heterosis for boll number kept increasing before August 7, thereafter decreased. The heterosis reduced from 19.6% down to 9.5% between August 13 and August 19. Heterosis was significant for boll number at position 1 of branches above 6.

关 键 词：陆地棉 铃数 杂种优势 

分 类 号：S562.031[农业科学—作物学]