Identification and classification of subspecies of Asian cultivated rice and their hybrids  

作　　者：Xiangkun Wang Renhua Li Chuanqing Sun Zichao Li Hongwei Cai Xinli Sun 

机构地区：[1]China Agr Univ, Beijing 100094, Peoples R China

出　　处：《Chinese Science Bulletin》1998年第22期1864-1872,共9页

基　　金：theNationalNaturalScienceFoundationofChina(GrantNos.39330 16 0396 70 4 4 5 );"86 3"NationalHi-TechPlan;NationalKeyProgramofChina

摘　　要：Having reviewed the major classification systems proposed by various scholars across the world, it is found that \%indica\% and \%japonica\% under \%O.sativa\% L. are two major directions thoroughly differentiated from the Asian cultivated rice, forming the framework of the classification structure. A system with \%indica\% and \%japonica\% as the only two subspecies is therefore reiterated.There are various ways to determine the indica_japonica identity of hybrid rice, but the "combined morphological trait index"(CMT index) method is more efficient and easier to handle, although the isozyme analysis, molecular marker analysis and grain quality assay methods are also feasible.Having reviewed the major classification systems proposed by various scholars across the world, it is found thatindica andjaponica underO. sativa L. are two major directions thoroughly differentiated from the Asian cultivated rice, forming the framework of the classification structure. A system withindica andjaponica as the only two subspecies is therefore reiterated. There are various ways to determine the indica-japonica identity of hybrid rice, but the “combined morphological trait index” (CMT index) method is more efficient and easier to handle, although the isozyme analysis, molecular marker analysis and grain quality assay methods are also feasible.

关 键 词：ASIAN CULTIVATED RICE SUBSPECIES intersubspecific HYBRIDS IDENTIFICATION classification. 

分 类 号：Q949.714.2[生物学—植物学]