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当前位置: 首页 > 文章 > 转基因抗虫杂交棉不同世代产量优势比较 湖南农业大学学报(自然科学版) 2006,32 (3) 237-240
Position: Home > Articles > Yield Comparison of Different Generations of Transgenic Bt Hybrid Cotton Journal of Hunan Agricultural University(Natural Sciences) 2006,32 (3) 237-240

转基因抗虫杂交棉不同世代产量优势比较

作  者：
李瑞莲;陈金湘;刘爱玉;周文新;熊格生
单  位：
湖南农业大学棉花研究所
关键词：
转基因抗虫杂交棉;F1;F2;F3;产量;杂种优势
摘  要：
2002-2004年,以转基因抗虫棉农杂62,H16,H64的F1,F2,F3为材料,比较了杂种后代的产量优势.结果表明,F1平均皮棉总产量为1296.30kg/hm2,比对照泗棉3号增产214.38kg/hm2,平均竞争优势为19.81%;F2平均皮棉产量为1168.65kg/hm2,比对照增产86.73kg/hm2,平均竞争优势为8.01%;F3平均皮棉产量为1117.65kg/hm2,比对照增产35.73kg/hm2,平均竞争优势为3.30%.F1竞争优势最大,其次为F2,F3.F2,F3的衰退率与竞争优势一致,其平均优势衰退率分别下降了12.59%和17.62%.在试验材料中,农杂62的产量最高,F1竞争优势大,而其F2,F3衰退率也最大;H16的产量最低,F1竞争优势最小,而其F2,F3衰退率也最小.在产量构成主要因素中,成铃数与产量的相关系数最大,为0.86962,其次是铃重和衣分,相关系数分别为0.73410和0.54273;F1,F2,F3成铃数与产量的相关系数分别为0.87080,0.84119,0.13814,表明杂种的结铃优势强.
译  名：
Yield Comparison of Different Generations of Transgenic Bt Hybrid Cotton
作  者：
LI Rui-lian,CHEN Jin-xiang,LIU Ai-yu,ZHOU Wen-xin,XIONG Ge-sheng(Cotton Research Institute,HNAU,Changsha 410128,China)
关键词：
transgenic insect-resistant hybrid cotton;F1;F2;F3;yield;heterosis
摘  要：
Yield variances in F1 and F2 and F3 in the year of 2002-2004 were compared.Results showed that average lint yield of F1 was 1 296.30 kg/hm2,which was an increase by 214.38 kg/hm2,compared with CK and its average competitive dominancy was 19.81%;Average lint yield of F2 was 1 168.65 kg/hm2a,n increase by 86.73 kg/hm2c,ompared with CK and its average competitive domain was 8.01%;Average lint yield of F3 was 1 117.65 kg/hm2,an increase by 35.73 kg/hm2 compared with CK and its average competitive dominancy was 3.30%.F1 had the highest competitive dominancy,then F2 and F3 whose decreasing ratio is consistent with their competitive dominance,and their average yield decreasing ratios were 12.59% and 17.62%,respectively.Of experimental materialst,he yield of Nongza-62F1 was the highest,along with higher competitive dominancy.In contrast,the yield of H16 was the lowest,along with lower competitive dominancy.The sequence of the main yield factors,was setting bolls,boll weight,lint percent,with related correlation coefficient 0.869 62,0.734 10,0.542 73.In addition,correlation coefficient of bolls of F1,F2,F3 were 0.870 80,0.841 19 and 0.138 14,respectively,which indicated hybrid was superior in setting bolls.

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