Recombinant Inbred Line (RIL) population including 120 lines derived from the cross between Japonica upland rice IRAT109 and paddy rice Yuefu was used in this study.

• 摘要以水稻越富与旱稻IRAT109杂交获得的120个粳-粳重组自交系为材料，旱田种植在自建的根管中，考察抽穗期的根数、根基粗等6个性状，同时计算根茎比（地下部分鲜重／地上部分鲜重）。