澳洲坚果接穗^(60)Co-γ射线辐射诱变育种适宜剂量的研究  

Research for Proper Dose of ^(60)Co-γ Ray in Macadamia Branches Radiation Breeding

作　　者：孔广红[1] 柳觐[1] 倪书邦[1] 范秋红[1] 宫丽丹[1] 陶亮[1] 陶丽[1] 陈丽兰[1] 贺熙勇[1] 

机构地区：[1]云南省热带作物科学研究所,云南景洪666100

出　　处：《西南农业学报》2016年第1期39-43,共5页Southwest China Journal of Agricultural Sciences

基　　金：农业部热带作物种质资源保护项目"澳洲坚果种质资源保护"(15RZZY-14);云南省应用基础研究计划面上项目"澳洲坚果突变体新种质的创制"(2011FB140);云南省热带作物科技创新体系建设专项资金课题"澳洲坚果品种选育与丰产栽培技术研究"(RF2015-2-1);云南省重点新产品开发计划项目"澳洲坚果新品种(系)选育"(2009BB005)

摘　　要：以澳洲坚果品种‘Renown’、‘Own choice’、‘HAES900’、‘HVA16’的接穗为供试材料。用6种剂量的60Co-γ射线辐射处理后嫁接,以未经辐照的接穗为对照。对嫁接成活率、植株生长变异情况进行调查分析。结果表明:在15~90 Gy辐照剂量范围内,随着辐射剂量加大,对嫁接成活率的抑制作用逐渐增强。不同品种的澳洲坚果对辐射的敏感性差异较大。4个品种(‘Own choice’、‘HVA16’、‘Renown’、‘HAES900’)枝条的辐射半致死剂量分别为19.68、18.23、18.04和10.81 Gy。本研究可为澳洲坚果辐射诱变育种适宜剂量的确定提供依据。In this paper,branches of four macadamia cultivars‘Renown＇,‘Own choice＇,‘HAES900 ＇and ‘HVHVA16 ＇were irradiated by60Co-γ ray at 15,30,45,60,75 and 90 Gy,and the untreated branches used as control. Survival ratio and growth characters variation were examined. The result indicated that with radiation dose increase,the inhibition effect of the survival rate enhanced. Different varieties of macadamia were quite different sensitivity to radiation. The medial lethal dose of branches of four macadamia varieties（ ‘Own choice＇,‘HVA16＇,‘Renown＇,‘HAES900＇） were 19. 68,18. 23,18. 04 and 10. 81 Gy,respectively. The results would provide an important experimental basis of macadamia radiation breeding.

关 键 词：澳洲坚果 60Co-γ射线 诱变育种 半致死剂量 

分 类 号：S664.9[农业科学—果树学]