Variation about Subspecies Characteristics and Relationship between Subspecies Characteristics and Vascular Bundles Characters in Filial Generation of Cross between Indica and Japonica

The RILs population that derived from the cross between qishanzhan (indica) and Qiuguang (japonica) was used to study variation about subspecies characteristics and relationship between subspecies characteristics and vascular bundles. The results showed the subspecies characteristics and vascular bundles characteristics all showed continuous variation and genetic characters of quantitative characteristics. There were significant correlation between cheng's index and ratio of large to small vascular bundles, cheng's index and ratio of large to large vascular bundles. The consistent degree between cheng's index and vascular bundles was low.