滇韭的B-染色体及抗逆生理特性研究初探  

A Preliminary Study of B-chromosome and Physiological Resistance Characteristics of Allium mairei

作　　者：陈小兰[1] 史冬燕[1,2] 邓国宾[1] 陈善娜[1] 

机构地区：[1]云南大学生物技术系 [2]山东菏泽学院生物系,山东菏泽274015

出　　处：《西北植物学报》2005年第6期1238-1241,共4页Acta Botanica Boreali-Occidentalia Sinica

基　　金：云南大学校级科研项目 2 0 0 2 Q0 0 9SM ;云南省教育厅科学研究基金项目 O2 ZY0 0 3

摘　　要：对B-染色体在滇韭二倍体和四倍体中的分布进行了调查,并测定了不同海拔高度二倍体植株的抗氧化酶系活力、丙二醛和脯氨酸的含量,探索B-染色体对滇韭形态、育性及抗逆性的影响.结果表明:B-染色体在二倍体和四倍体滇韭中的分布和数量存在较大差异;B-染色体的存在对二倍体滇韭的形态和育性具有明显影响;SOD酶活及MDA含量与海拔高度呈一定的相关性.The distribution of B-chromosome between Allium mairei diploids and tetraploids were investigated,and the activities of oxidation-resisting enzymes and the contents of malondialdebyde (MDA) and proline in the diploids at different altitudes were determined to examine the effects of B-chromosome of Allium mairei on its morphology,fertilitly and resistance.The results showed that Allium mairei diploids and tetraploids remarkably differed in their B-chromosome distribution and quantity;the incidence of B-chromosome obviously affected the morphology and fertility of Allium mairei;SOD activity and MDA contents appeared correlaated with the altitudes abouve sea level to some extent.

关 键 词：滇韭 B-染色体 二倍体 四倍体 抗逆性 

分 类 号：Q945.78[生物学—植物学]