玉米直链淀粉ae基因的遗传与杂种优势分析  

Heterosis and inheritance analysis on ae gene of amylase in maize

作　　者：王萱[1] 王化俊[1] 刘鹏飞[1] 岳效飞[1] 王汉宁[1] 

机构地区：[1]甘肃农业大学农学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2010年第3期69-73,共5页Journal of Gansu Agricultural University

基　　金：国家科技支撑计划课题(2007BAD52B08)

摘　　要：通过对2个ae近等基因系、6个普通玉米自交系及其组配杂交组合的直链淀粉含量及千粒质量的测定,结果表明:含有ae基因的杂交种与ae同型自交系相比千粒质量显著提高,ae基因明显提高了杂种直链淀粉的含量;同时,发现ae近等基因系的α-淀粉酶活性,发芽势和发芽率比普通自交系低,而含有ae基因的杂交组合明显高于ae近等基因系和普通自交系,表现出了较强的的杂种优势.The contents of amylase and 1000-seed weights of two ae high-amylose maize,six common maize inbred lines,and their hybrids were tested. The results showed that the content of amylose that controlled by ae gene had obviously hybrid vigor. The activity of α-amylase at 48h,germination percentage and potential were also tested.The activity of α-amylase at 48h,germination percentage and germination potential of high-amylose maize were lower than commom inbred lines,but these of the hybrids which contained ae gene were and all obviously higher than both ae high-amylose and inbred lines,all the hybrids showed strong heterosis.

关 键 词：玉米 ae基因 直链淀粉 杂种优势 

分 类 号：S513.032[农业科学—作物学]