CAJ | 학술논문

利用超级稻协优9308(协青早B×中恢9308)衍生的重组自交系(recombinant inbred line,RIL)群体及其遗传连锁图谱,应用 Windows QTL Cartographer 2．5对施氮和不施氮条件下水稻产量性状进行了 QTL分析.共检测到52个控制水稻产量性状的 QTL,分布于9条染色体上的27个染色体区域,单个 QTL 可解释的表型变异介于4．93％~26．73％之间.2种施氮水平下检测到11个相同的产量性状 QTL 和30个差异表达的产量性状 QTL,表明不同施氮水平下水稻产量性状的遗传机制不同.在第3染色体上 RM135－RM168区间检测到的同时控制2种氮素水平下单株穗数、每穗颖花数、每穗实粒数和低氮水平下穗着粒密度的 QTL和在第8染色体上 RM5556－RM310区间检测到的同时控制2种氮素水平下每穗颖花数、每穗实粒数和低氮水平下单株穗数、穗着粒密度的 QTL.上述 QTL与已报道的水稻氮循环相关 QTL位置相近.
이용초급도협우9308(협청조B×중회9308)연생적중조자교계(recombinant inbred line,RIL)군체급기유전련쇄도보,응용 Windows QTL Cartographer 2．5대시담화불시담조건하수도산량성상진행료 QTL분석.공검측도52개공제수도산량성상적 QTL,분포우9조염색체상적27개염색체구역,단개 QTL 가해석적표형변이개우4．93％~26．73％지간.2충시담수평하검측도11개상동적산량성상 QTL 화30개차이표체적산량성상 QTL,표명불동시담수평하수도산량성상적유전궤제불동.재제3염색체상 RM135－RM168구간검측도적동시공제2충담소수평하단주수수、매수영화수、매수실립수화저담수평하수착립밀도적 QTL화재제8염색체상 RM5556－RM310구간검측도적동시공제2충담소수평하매수영화수、매수실립수화저담수평하단주수수、수착립밀도적 QTL.상술 QTL여이보도적수도담순배상관 QTL위치상근.
A recombinant inbred line (RIL)population,derived from a super-hybrid rice Xieyou 9308 (Xieqingzao B× Zhonghui 9308)and its genetic linkage map were used to detect QTLs by Windows QTL Cartographer 2.5 for yield traits under low and normal nitrogen conditions in rice.A total of 52 QTLs for yield traits distributing in 27 regions on nine chromosomes were detected,explaining 4.93%-26.73% of the phenotypic variation,separately for each QTL. Eleven QTLs were detected in both nitrogen conditions,and thirty different QTLs were detected under two nitrogen treatments,suggesting a different genetic basis controlling rice growth at low versus normal nitrogen conditions.QTLs for number of panicles per plant,number of spikelets per panicle,number of filled grains per panicle under two nitrogen conditions and grain density under low nitrogen conditions were detected at the interval RM1 3 5-RM1 6 8 on chromosome 3 .QTLs for number of spikelets per panicle,number of filled grains per panicle under two nitrogen conditions and number of panicles per plant,grain density under low nitrogen condition were detected at the interval RM5556-RM310 on chromosome 8.The QTLs described above shared the similar regions with QTLs for rice nitrogen recycling reported previously.