【作者】 蒋云； 罗小梅； 张海琴； 林杨； 宣朴；

【Author】 Jiang Yun1,Luo Xiao-mei2,Zhang Hai-qin2,Yang lin1,Xuan Pu1, (1.Institute of Biological &Nuclear Technology , Sichuan Academy of Agricultural Sciences , Chengdu Sichuan, China 2.Triticeae Research Institute, Sichuan Agriculture University, Wenjiang Sichuan, China)

【机构】 四川省农科院生物技术核技术研究所； 四川农业大学小麦研究所；

【摘要】 为初步了解鹅观草属牧草60Co-γ射线辐射诱变育种的适宜剂量范围,以农艺性状优良的鹅观草(Roegneri kamoji)、纤毛鹅观草(Roegneria ciliaris)、竖立鹅观草(Roegneria japonensis)共3个物种、6个居群为研究材料进行辐照诱变处理,设置CK(0Gy)、50Gy、100Gy、150Gy、200Gy、250Gy、300Gy和400Gy等8个剂量梯度,对各剂量梯度的诱变效应进行考察分析,利用多靶单击模型建立成活率的剂量效应方程计算6份材料的半致死剂量,并结合苗高和结实率等指标初步确定了各参试材料的适宜辐照剂量。本研究对今后鹅冠草属牧草的辐照诱变育种具有一定的参考价值。更多还原

【Abstract】 Six groups from three species of Roegneria were radiated with eight ladders of 60Co-γ ray for finding the most suitable absorbed dose. The dose ladders were CK(0Gy), 50 Gy, 100 Gy, 150 Gy, 200Gy, 250 Gy, 300 Gy and 400 Gy. The half-lethal dose of six gourps, generated by multi-Target Single Hit Model Equation, were from 59.6Gy to 172.8Gy. Germination percentage of seeds, height of seeding, plant survival percentage and setting percentage were investigated. The most suitable absorbed doses of each species primerly were deduced from these data. The research provide a valuable reference for Roegneria mutation breeding on chousing the absorbed does.更多还原