香蕉离体试管芽诱变育种的研究Ⅰ.试管芽的^(60)Coγ射线辐照试验  

Study on Mutation Breeding of Banana in Vitro Tube-buds Ⅰ. Experiment on 60Co Gamma Ray lradiation of Tube-buds

作　　者：郭建辉[1] 黄锡栋[1] 陈炳坤[1] 

机构地区：[1]漳州市农业局,漳州363000

出　　处：《福建省农科院学报》1997年第1期20-23,共4页

基　　金：漳州市科技计划项目

摘　　要：^(60)Coγ射线对天宝香蕉试管芽的辐照试验结果表明：供试试管芽材料因大小不同对^(60)Coγ射线所表现的敏感性有明显的差异．其中以2．0-5．0mml／2纵切芽体最敏感，其次是2．0-5．0mm芽，而5．0～10．0mm芽最不敏感，它们的半致死剂量（LD_(50)）分别是49．299Gy、57．431Gy和68．191Gy。^(60)Coγ射线对供试试管芽的生长量和芽增殖数有明显的影响，其严重度与剂量水平成负相关。它们的相关系数（r）分别为-0．879，-0．906。The experimental result of the irradiation of 60Co gamma ray to "Tianbao Banana" showedthat the sensitivities of tube-buds the diferent size to 60Co gamma ray were quite discrepant, of which thelongitudinally dissected tube-buds of 2. 0-5 .0 mm were the most sensitive, the 2.0-5. 0 mm budswere the next and the 5.0-10.0 mm buds had the laest sensitivity. Their semi-lethal doses were49 .299Gy, 57. 431Gy and 68. 191Gy respetivdy. The growth weight and proliferation quantity of experimental tube-buds after irradiation had obvious negative correlation to dose leves. Their rdative coefficents(r) were-0 .879 and-0. 906 respectively.

关 键 词：香蕉 诱变育种 钴60射线辐射 离体试管芽 

分 类 号：S668.103.5[农业科学—果树学]