作物学报 ›› 2017, Vol. 43 ›› Issue (07): 1087-1095.doi: 10.3724/SP.J.1006.2017.01087
武炳瑾,简俊涛,张德强,马文洁,冯洁,崔紫霞,张传量,孙道杰*
WU Bing-Jin,JIAN Jun-Tao,ZHANG De-Qiang,MA Wen-Jie,FENG Jie,CUI Zi-Xia,ZHANG Chuan-Liang,SUN Dao-Jie*
摘要:
小麦穗部性状与产量密切相关,挖掘穗部性状基因及其关联分子标记具有重要意义。本研究以周8425B?小偃81衍生的RIL群体(F8)为材料,利用90k芯片标记构建的高密度遗传图谱对3个环境下的穗长、小穗数、不育小穗数、穗粒数、千粒重进行QTL定位。共检测到19条染色体上的71个QTL,变异解释率(PVE)范围为2.10%~45.25%,其中37个位点为主效QTL (PVE>10%)。QSl.nafu-6A.2 (穗长)、QSl.nafu-7A (穗长)、QSsn.nafu-2A.1 (小穗数)、QSsn.nafu-2D (小穗数)和QGns.nafu-2B (穗粒数)在多个环境中被检测到,且LOD>10,PVE>20%。位于同一个基因簇中的QSl.nafu-6A.2 (穗长)、QGns.nafu-6A (穗粒数)和QTgw.nafu-6A (千粒重)在多个环境中被检测到,且与已报道的相关位点位置相同或相近,在分子标记辅助育种中具有较大参考价值。
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