CAJ | 학술논문

以6个转Bt基因陆地棉作为亲本材料，按完全双列杂交（Griffing 4）设计，从16个性状指标上对其品种间杂种优势和配合力进行研究。结果表明，杂种F1具有明显的优势，测试的16个性状中有13个性状具有正向中亲优势，5个性状具有正向超高优势，14个性状具有正向竞争优势。通径分析表明：在增产因素中，株高、单铃重和衣分所起的作用大。配合力分析表明：16个性状的遗传变异主要产生于基因的加性效应，而籽棉产量、皮棉重、果枝数、单铃重、衣分、烂铃率、比强度和纤维长度的非加性效应也很强；冀棉616（ P5）和衡棉4号（ P1）是优良的高产亲本，冀棉228（ P6）是良好的优质亲本；筛选出8个高优势组合，其中3个为丰产组合P1×P2、P4×P5、P1×P4，3个为优质组合P5×P6、P2×P5、P3×P4，2个为高产优质组合P2×P6、P3×P5。
이6개전Bt기인륙지면작위친본재료，안완전쌍렬잡교（Griffing 4）설계，종16개성상지표상대기품충간잡충우세화배합력진행연구。결과표명，잡충F1구유명현적우세，측시적16개성상중유13개성상구유정향중친우세，5개성상구유정향초고우세，14개성상구유정향경쟁우세。통경분석표명：재증산인소중，주고、단령중화의분소기적작용대。배합력분석표명：16개성상적유전변이주요산생우기인적가성효응，이자면산량、피면중、과지수、단령중、의분、란령솔、비강도화섬유장도적비가성효응야흔강；기면616（ P5）화형면4호（ P1）시우량적고산친본，기면228（ P6）시량호적우질친본；사선출8개고우세조합，기중3개위봉산조합P1×P2、P4×P5、P1×P4，3개위우질조합P5×P6、P2×P5、P3×P4，2개위고산우질조합P2×P6、P3×P5。
Crosses were made by Griffing4 design,using 6 transgenic Bt cotton varieties as parents ,to analyze heterosis of F1 hybrids and the combining ability from 16 traits.F1 hybrids showed an appreciable heterosis .13 of 16 characters measured had mid-parent heterosis ,5 showed high-parent heterosis and 14 expressed competitive hetero-sis.Path analysis indicated that plant height , single boll weight and lint percentage contributed greatly to the in-crease of output of the yield components .Combining ability analysis showed that the additive effects were predomi-nant in F1 traits,but non-additive effects of seed cotton yield ,lint yield,number of fruit branches ,single boll weight , lint percentage,rate of rotten boll,fiber strength and fiber length were also very strong .Jimian 616 and Hengmian 4 were high yied parents and Jimian 228 was a good quality parent with high genetic combining ability .8 excellent combinations were selected from 15 F1 hybrids,3 of which were high yield P1 ×P2,P4 ×P5,P1 ×P4,3 were good quality P5 ×P6,P2 ×P5,P3 ×P4 and 2 were high yield and good quality P2 ×P6,P3 ×P5.