【作者】 马恩波； 郭亚平； 任竹梅； 白贵荣；

【Author】 Ma Enbo Guo Yaping Ren Zhumei (Life science Department, Shanxi University, Taiyuan 030006, China)Bai Guirong (Institute of Molecular, Shanxi University, Taiyuan 030006, China)

【机构】 山西大学生命科学系； 山西大学分子研究所；

【摘要】 本文对中国境内分布的山稻蝗 Oxya agavisa Tsai、日本稻蝗O.japonica(Thunberg)以及中华稻蝗　O.chinensis(Thunberg)进行了较为广泛的采集调查,并对其染色体核型和C带带型作了分析研究。从分布范围来看,在我国山稻蝗主要分布于长江以南的中海拔山区,日本稻蝗主要分布于长江以南地区,而中华稻蝗则广布于我国南北方各地,其中在长江以南地区中华稻蝗与日本稻蝗分布地有重叠。从形态特征来看,三种稻蝗均为稻蝗属中大型个体,其中山稻蝗体较粗壮,前翅不达后足股节顶端而与其他两种明显区别,中华稻蝗、日本稻蝗个体大小及其他外部形态较相近,但雌性下生殖板及雄性肛上板特征具有差异。从染色体C带核型来看,山稻蝗L2染色体具一亚端部居间带,日本稻蝗该染色体具一亚端部居间带及一端带,而中华稻蝗该染色体只有端带。据此,本文分析了上述三种稻蝗的细胞分类学相互关系。更多还原

【Abstract】 In this paper, chromosomal C - banding karyotypes of three Oxya species have been researched, there are Oxya agavisa, O. -japonica, and O. chinensis. From the distribution area of these species, 0. agavisa is distributed to the mountain area of south-em China, O.japonica is distributed to the southern Cliina, where as O.chinensis is widly distributed to the northern and southern Cliina. In this paper, we researched the chromosomal C- banding karyotype in above three species.The results show that, as a same genus these species have marker C - bands on L2 chromosome, such as O. agavisa has subterminal C - band OH L2, O.japonica has subterminal and terminal C- bands on L2 , and O.chinensis only has terminal C- band on L2 .From the results above, we discussed the relationships among three species studied.更多还原