利用日本晴/9311重组自交系群体定位水稻成熟期叶形相关性状 QTL
이용일본청/9311중조자교계군체정위수도성숙기협형상관성상 QTL
QTL Analysis for Rice Leaf Morphology at Maturity Stage Using a Recombinant Inbred Line Population Derived from a Cross Between Nipponbare and 931 1
  • 万方数据
    中国水稻科学 중국수도과학
    CHINESE JOURNAL OF RICE SCIENCE
    2014年 6期 589-597 ,共9页

    王兰%黄李超%代丽萍%杨窑龙%徐杰%冷语佳%张光恒%胡江%朱丽%高振宇%董国军%郭龙彪%钱前%曾大力

    왕란%황리초%대려평%양요룡%서걸%랭어가%장광항%호강%주려%고진우%동국군%곽룡표%전전%증대력

    水稻%重组自交系群体%叶片形态%QTL分析%上位性分析 水稻%重組自交繫群體%葉片形態%QTL分析%上位性分析
    수도%중조자교계군체%협편형태%QTL분석%상위성분석
    rice%leaf shape%quantitative trait locus%epistatic analysis
    水稻叶片是植株进行光合作用的主要器官，优化其形态指标是水稻高产育种的重要目标之一.以日本晴和9311衍生的重组自交系群体(RIL)为材料，对其上3叶的叶长、叶宽、叶面积及叶片长宽比进行考查及 QTL 定位分析.结果表明，各性状在双亲间存在显著或极显著差异，在群体中呈连续分布，表现为多基因控制的数量性状特征；相关分析表明，不同叶位的叶片叶形性状间呈极显著的正相关性；共检测到上3叶的叶长、叶宽、叶面积及叶片长宽比相关 QTL 42个，它们分布于水稻12条染色体上，贡献率介于4．3％~29．0％，来自9311的增效等位基因的数目和加性效应比来自日本晴的要大；另外还检测到17对上位性位点，其贡献率为3．3％~23．4％；还对剑叶叶长、叶宽和叶面积的增效等位基因进行了聚合比较，增效等位基因的聚合能明显调节水稻剑叶的叶长、叶宽和叶面积大小，对其在常规稻和杂交稻的育种应用前景进行了探讨.
    수도협편시식주진행광합작용적주요기관，우화기형태지표시수도고산육충적중요목표지일.이일본청화9311연생적중조자교계군체(RIL)위재료，대기상3협적협장、협관、협면적급협편장관비진행고사급 QTL 정위분석.결과표명，각성상재쌍친간존재현저혹겁현저차이，재군체중정련속분포，표현위다기인공제적수량성상특정；상관분석표명，불동협위적협편협형성상간정겁현저적정상관성；공검측도상3협적협장、협관、협면적급협편장관비상관 QTL 42개，타문분포우수도12조염색체상，공헌솔개우4．3％~29．0％，래자9311적증효등위기인적수목화가성효응비래자일본청적요대；령외환검측도17대상위성위점，기공헌솔위3．3％~23．4％；환대검협협장、협관화협면적적증효등위기인진행료취합비교，증효등위기인적취합능명현조절수도검협적협장、협관화협면적대소，대기재상규도화잡교도적육충응용전경진행료탐토.
    As the main photosynthetic organs,rice leaf morphological characteristic is an important target in high yield breeding.A recombinant inbred line (RIL)population derived from a cross between Nipponbare and 93 1 1 was used to map QTLs for leaf length,leaf width,leaf area and leaf length to width ratio of top three leaves in maturity stage. Correlation analysis showed that there were significant correlation among leaf shape indexes.The leaf shape traits followed a normal distribution with some transgressive individuals,indicating that these complex quantitative traits were controlled by multiple genes.A total of 42 QTLs were detected for these traits,which were mapped on all 12 chromosomes with the phenotypic variations ranging from 4.3% to 29.0%, and the increasing effective alleles contributed by 93 1 1 showed higher additive effect than that from Nipponbare.Seventeen pairs of QTL with epistatic effect were identified among eight traits with explained variations from 3.3% to 23.4%.Pyramiding the positive alleles apparently altered the characters of flag leaf.
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