植物遗传资源学报
植物遺傳資源學報
식물유전자원학보
JOURNAL OF PLANT GENETLC RESOURCES
2010年
3期
349-359
,共11页
周蓉%陈海峰%王贤智%张晓娟%单志慧%吴学军%邱德珍%伍宝朵%沙爱华%杨中路%周新安
週蓉%陳海峰%王賢智%張曉娟%單誌慧%吳學軍%邱德珍%伍寶朵%沙愛華%楊中路%週新安
주용%진해봉%왕현지%장효연%단지혜%오학군%구덕진%오보타%사애화%양중로%주신안
大豆%株高%茎粗%发育阶段%QTL
大豆%株高%莖粗%髮育階段%QTL
대두%주고%경조%발육계단%QTL
Soybean%Plant height%Stem diameter%Developmental stages%QTL
利用中豆29×中豆32的重组自交系,以复合区间作图法对不同发育阶段的大豆株高和茎粗同时进行非条件和条件QTL定位,在11个连锁群检测到18个株高QTL,在9个连锁群检测到19个茎粗QTL.不同发育时期影响大豆株高和茎粗QTL的数量、加性效应和贡献率均不相同,QTL表达具有时序性和选择性,有些QTL仅表达1次,有些可多次连续表达.有3个株高QTL和1个茎粗QTL在3个年度重复表达,有6个株高QTL和2个茎粗QTL在2个年度重复表达.F连锁群上株高和茎粗QTL存在共位性,R1～R4期均有株高和茎粗QTL同时表达,但株高和茎粗QTL的增效基因不同,株高QTL表达次数多而茎粗QTL表达次数较少,前期(V4～R3)QTL表达数量多而后期(R4～R5)表达数量较少.株高和茎粗QTL的动态变化与表型相关分析结果一致,对于适期选择粗秆抗倒的高产材料具有指导作用.
利用中豆29×中豆32的重組自交繫,以複閤區間作圖法對不同髮育階段的大豆株高和莖粗同時進行非條件和條件QTL定位,在11箇連鎖群檢測到18箇株高QTL,在9箇連鎖群檢測到19箇莖粗QTL.不同髮育時期影響大豆株高和莖粗QTL的數量、加性效應和貢獻率均不相同,QTL錶達具有時序性和選擇性,有些QTL僅錶達1次,有些可多次連續錶達.有3箇株高QTL和1箇莖粗QTL在3箇年度重複錶達,有6箇株高QTL和2箇莖粗QTL在2箇年度重複錶達.F連鎖群上株高和莖粗QTL存在共位性,R1～R4期均有株高和莖粗QTL同時錶達,但株高和莖粗QTL的增效基因不同,株高QTL錶達次數多而莖粗QTL錶達次數較少,前期(V4～R3)QTL錶達數量多而後期(R4～R5)錶達數量較少.株高和莖粗QTL的動態變化與錶型相關分析結果一緻,對于適期選擇粗稈抗倒的高產材料具有指導作用.
이용중두29×중두32적중조자교계,이복합구간작도법대불동발육계단적대두주고화경조동시진행비조건화조건QTL정위,재11개련쇄군검측도18개주고QTL,재9개련쇄군검측도19개경조QTL.불동발육시기영향대두주고화경조QTL적수량、가성효응화공헌솔균불상동,QTL표체구유시서성화선택성,유사QTL부표체1차,유사가다차련속표체.유3개주고QTL화1개경조QTL재3개년도중복표체,유6개주고QTL화2개경조QTL재2개년도중복표체.F련쇄군상주고화경조QTL존재공위성,R1～R4기균유주고화경조QTL동시표체,단주고화경조QTL적증효기인불동,주고QTL표체차수다이경조QTL표체차수교소,전기(V4～R3)QTL표체수량다이후기(R4～R5)표체수량교소.주고화경조QTL적동태변화여표형상관분석결과일치,대우괄기선택조간항도적고산재료구유지도작용.
Plant height and stem diameter are important agronomic traits in soybean,which have effect on yield and lodging.The objective of this study was to molecularly map the QTL conditioning plant height and stem diameter at different developmental stages of soybean growth.A population of 165 recombinant inbred lines (RILs) derived from a cross between Zhongdou 29 and Zhongdou 32 was used in this study.Based on unconditional and conditional QTL mapping methods,18 QTLs for plant height and 19 QTLs for stem diameter were detected on eleven and nine linkage groups respectively.The number,additive effects and contribution rate of QTLs for plant height and stem diameter were different at different developmental stages,which indicated that these QTLs expressed timely and selectively.Three QTLs for plant height and one QTL for stem diameter were detected in three years,and six QTLs for plant height and two QTLs for stem diameter were detected in two years.The QTLs of plant height and stem diameter on linkage groups F were mapped to the same loci and they were expressed simultaneously from R1 to R4 stages.Compared with the late stages,more QTLs expressed in the early stages,and QTLs for plant height expressed more times than QTLs for stem diam eter.The positive alleles of QTLs for plant height and stem diameter were from different parents.The developmental dynamic of QTLs for plant height and stem diameter was consistent with the correlation analysis of phenotypic traits at different developmental stages.
