草业学报2017，Vol.26Issue(7)：62-70,9.DOI:10.11686/cyxb2016352
海滨雀稗60Co-γ辐射诱变突变体筛选
Mutagenic effect of 60Co-γ irradiation on turf characteristics of Paspalum vaginatum
摘要
Abstract
Seashore paspalum (Paspalum vaginatum) is a salt-tolerant plant that does not require good-quality water for irrigation.Therefore,it has the potential to greatly reduce fresh water consumption and waste.To date,however,no new seashore paspalum cultivars have been bred in China.Mutation is an important method for breeding new varieties of plants,including turfgrass.The objective of this study was to breed new strains of seashore paspalum with the 60Co-γ radiation method.Sprigs of "Sea Isle 2000","Platinum","Supreme",and "Salam" were radiated at five different radiation intensities,and then favorable mutants were screened by comparing leaf width,leaf length,plant height,stolon length,stolon diameter,and stolon density with those of unirradiated controls.Nine mutants were acquired by 60Co-γirradiation of sprigs of seashore paspalum.Compared with the control plants,the mutants showed greater plant height,leaf length,and leaf width.The turf qualities of the mutants "SI-50-1","PL-40-2" and "SLM-45-1" were better than those of the control.In conclusion,we have identified the appropriate radiation intensity of 60Co-γfor mutation of seashore paspalum,and we have generated several new mutants of this important plant.关键词
海滨雀稗/60Co-γ射线/突变材料Key words
seashore paspalum/60Coγ-rays/mutants引用本文复制引用
刘天增,谢新春,张巨明..海滨雀稗60Co-γ辐射诱变突变体筛选[J].草业学报,2017,26(7):62-70,9.基金项目
广东省科技计划项目(2012B020302002)和国家自然科学基金(31502011)资助. （2012B020302002）
