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QTL analysis of flag leaf characteristics and ears weight in rice

ZOU Detang;WANG Jin;WANG Jingguo;LIU Hualong;LIU Yuqiang;JIA Yan;School of Agriculture,Northeast Agricultural University;  
F3 group derived from the cross of Xiaobaijingzi/Kongyu131, which were significantly different in flag leaf size and ears weight, was used in QTL analysis of the flag leaf size in rice. A total of 99 QTLs referring the flag leaf characteristics,including morphological characteristics(length, width, area, basal angle, stretch angle) and ears weigth were detected. Total 17 QTLs were detected on chromosome 1, 3, 4, 5, 6, 7 and 9, respectively. Among them, the QTLs for the flag leaf length, width, area, basal angle and stretch angle were 3, 4, 2, 3, 2, respectively, the QTLs for the ears weight were 3. The application of the QTLs for flag leaf characters can provide the basis data to improve flag leaf traits, perfect plant types of rice and marker-assisted selection.
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