%0 Journal Article %T CombiningAbilityandHeteroticPerformanceofBt£¿£¿TransgenicLinesinCotton(GossypiumhirsutumL.) %A GUOXiao-ping %A ZHAOYuan-ming %A WUJia-he %A ZHANGXian-long %A NIEYi-chun %J ÃÞ»¨Ñ§±¨ %P 1-5 %D 2008 %R 1002-7807(2006)05-0304-05 %X Fivetransgeniclinesofcotton(GossypiumhirsutumL.)carryingthecry1Ac(Bt£¬Bacillusthuringiensis)geneweredevelopedfromacultivarJH321byindependenttransformationevents.FifteenF1hybridswereobtainedfromdiallelcrossesamongthefivetransgeniclinesandJH321.WhencomparedwiththetransformationreceptorcultivarJH321,significantvariationsinagronomictraitsincludingimprovedyieldoryieldcomponentswerefoundamongthesetransgeniclines.Generalcombiningabilities(GCA)amongthesetransgeniclinesvariedgreatly,andtwooftheselineswithsignificantpositiveGCAeffectswereidentified.HeterosisinF1hybridsalsoexhibitedsignificantvariations.Itwasfoundthattheaverageheterosisofcrosseswithtwotransgeniclineswaslowerthanthatwithonlyonetransgeniclineasparentinyieldperformance.TheeconomictraitimprovementfortransgeniclinesandtheheterosisproducedbetweentransgeniclineandreceptorcultivarmightberaisedfromdifferentintegrationsitesofBtgene. %K uplandcotton %K combiningability %K transgeniclines %K Btgenes %U http://journal.cricaas.com.cn:8083/Jweb_mhxb/CN/Y2008/V20/ISelection/1