Analysis on correlation characters of grass yield in recombinant inbred lines of forage triticale
[Objective]In order to explore the main influencing factors of the yield of forage-type triticale.[Method]The recombinant inbred line (RIL) population constructed from 'Shida No.1' triticale and 'Gannong No.7' triticale was used as the research object and the phenotypic identification and statistical analysis of 6 grass yield-related traits (plant height,tiller number,flag leaf length,flag leaf width,internode length under panicle and fresh weight per plant) of 273 plants of F6 generation were carried out.[Result]The results showed that the coefficient of variation ranged from 9.68％ to 64.10％.The coefficient of variation of the fresh weight per plant was the largest,fol-lowed by those of the number of tillers,the length of the internodes under the panicle,the height of the plant,and the length of the flag leaf.And the coefficient of variation of the width of the flag leaf was the smallest.The correlation co-efficient between fresh weight per plant and the number of tillers was the largest (0.764),the correlation coefficient with internode length below spike is the smallest (0.052).[Conclusion]By principal component analysis,the grass yield-related traits were integrated into biomass components and plant height components,and the cumulative contri-bution rate reached 70.81％. This study could provide a reference for the selection and breeding of new varieties of forage triticale.
万方数据
维普
