^(60)Coγ射线辐照对野牛草坪用性状的诱变效应  

Mutagenic Effect of ^(60)Co γ-rays Irradiation on Turf Characteristics of Buchloe dactyloides(Nutt.) Engelm.

作　　者：庞帝琼[1] 李健[1] 张蕴薇[1] 于晓丹 杨富裕[1] 

机构地区：[1]中国农业大学草地研究所,北京100193

出　　处：《安徽农业科学》2012年第16期8912-8914,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划项目(2009BADA7B04;2011BAD17B01-02);国家973课题(2012CB215300);国家863课题(2012-AA101201);国家现代牧草产业技术体系项目(CARS-35)

摘　　要：[目的]对60Coγ射线辐照对野牛草坪用性状的诱变效应进行研究。[方法]以经不同辐照强度的60Coγ射线处理后的野牛草[Bu-chloe dactyloides(Nutt.)Engelm.]为试验材料,对其进行坪用相关性状的测定,分析不同γ射线不同辐照强度(1 200、1 400、1 600、1 800、2 000 Gy)对野牛草当代植株草坪相关性状的诱变效应。[结果]各辐照处理的野牛草发芽率变化趋势不一致,种苗的根长和芽长均小于对照;与对照相比,辐照处理后幼苗的高度显著变小,分蘖数、株高、叶长和叶宽均小于对照;匍匐茎长度、匍匐茎粗和匍匐茎节数与对照差异不显著。[结论]该研究为确定野牛草诱变育种的适宜γ射线辐射剂量及筛选有益突变体奠定基础。[Objective] This study aimed to investigate the mutagenic effect of 60Co γ-rays irradiation on turf characteristics of Buchloe dactyloides（Nutt.） Engelm.[Method] Buffalo grass was irradiated by 60Co γ-rays with five different radiation intensities（1 200,1 400,1 600,1 800,2 000 Gy） to determine the related turf characteristics and analyze the mutagenic effect of 60Co γ-rays with different radiation intensities on buffalo grass.[Result] Germination rates of buffalo grass irradiated by different radiation intensities of 60Co γ-rays varied inconsistently,and the root length and bud length were shorter than the control;compared with the control,the height of irradiated seedlings was significantly smaller,and the number of tillers,plant height,leaf length and leaf width were shorter than the control;however,the stolon length,stolon width and number of stolon nods had no significant difference compared with the control.[Conclusion] This study laid the foundation for determining the appropriate radiation intensity of 60Co γ-rays and selecting useful mutants of buffalo grass.

关 键 词：野牛草 Γ射线 坪用性状 诱变效应 

分 类 号：S543.9[农业科学—作物学]