彩色棉纤维品质的杂种优势分析  

Analysis of heterosis of upland cotton lines with natural color fiber

作　　者：张超[1] 毛正轩[1] 牟方生[1] 杨泽湖[1] 龚一耘[1] 

机构地区：[1]国家棉花改良中心四川分中心四川省农科院经济作物育种栽培研究所,四川简阳641400

出　　处：《西南农业学报》2007年第4期602-605,共4页Southwest China Journal of Agricultural Sciences

基　　金：四川省应用基础项目;四川省育种攻关项目

摘　　要：采用NCⅡ设计,以3个白色棉为母本,3个绿色棉为父本,配制绿色杂交组合;以2个白色棉为母本,以4个棕色棉为父本,配制棕色杂交组合。纤维品质杂种优势和配合力方差分析表明:绿色杂种(F1)纤维品质的超白色棉亲本优势、中亲优势、超彩色棉亲本优势和竞争优势,2.5%跨长分别为0.91%、6.53%、13.02%和1.21%,比强度分别为-5.77%、15.63%、49.7%和1.02%,马克隆值分别为-14.6%、9.31%、52.51%和-23.61%。棕色杂种(F1)纤维品质的超白色棉亲本优势、中亲优势、超彩色棉亲本优势和竞争优势,2.5%跨长分别为-3.09%、1.71%、7.12%和-5.59%,比强度分别为-6.99%、-0.06%、9.55%和-4.05%,马克隆分别为-8.67%、-3.15%、4.49%和-18.37%。绿色纤维2.5%跨长的加性方差和显性方差分别占表性方差的56.18%和31.32%,达显著;比强度以显性方差为主,占表性方差的59.53%,马克隆值的显性方差占表性方差的39.22%,达显著;棕色纤维绿色纤维2.5%跨长以加性方差为主,占表性方差的68.59%,达极显著;比强度加性方差占表性方差的37.77%,达显著,马克隆值的加性方差和显性方差分别占表性方差的54.76%和34.69%,均达显著。To analyze heteresis and combining ability ,the green crosses were made between 3 white fiber lines and 3 green fiber lines by NC Ⅱ design,the brown crosses were made between 2 white fiber lines and 4 brown fiber lines by NC Ⅱ design too. The results showed that,for green fiber , the AH-heteresis over white fiber parent, the MH-heterosis over MH-parent value, the PNH- heteresis over color fiber parent and the CH-heterosis over check of 2.5 % span length were 0.91% ,6.53 %, 13.02 % and 1.21%. The AH, MH, PNH and CH of fiber strength were -5.77 % ,15.63 % ,49.7 % and 1.02 %.The AH,MH,PNH and CH of micronaire were 14.6 % ,9.31% ,52.51% and -23.61%. For brown fiber,The AH, MH,PNH and CH of 2.5 % span length were -3.09 %, 1.71% ,7.12 % and -5.59 %. The AH,MH,PNH and CH of fiber strength were -6.99 %, -0.06 % ,9.55 % and -4.05 %. The AH,MH,PNH and CH of mlcronaire were -8.67 %, -3.15 % ,4.49 % and -18.37 %. For green fiber,the GCA and SCA variance ratio to phenotype were significant and were 56.18 % and 31.32 % ,The SCA variance ratio to phenotype of fiber strength was 59.53 % and the SCA variance ratio to phenotype of micronaire was significant and was 39.22 %.For brown fiber,the GCA variance ratio to phenotype of 2.5 % span length was 68.59 % ,the GCA variance ratio to phenotype of fiber strength was significant and was 37.77 %, the GCA and SCA variance ratio to phenotype of micronaire value were significant and were 54.75 % and 34.69 %.

关 键 词：彩色 棉花 纤维 杂种优势 

分 类 号：S562[农业科学—作物学]