Analysis on seed morphological traits of Argentina anserina from different provenances
[Objective]This study aims to systematically analyze the phenotypic traits of seeds from different sources of Argentina anserina and reveal the extent of variation and morphological diversity in A.anserina seed traits.[Method]Thirty samples of A.anserina seeds from different sources were used as materials to measure various pa-rameters,including length,width,circumference,thickness,length-to-width ratio,and thousand-grain weight.Vari-ance analysis,correlation analysis,cluster analysis,and principal component analysis were conducted.[Result]1)There were significant differences(P<0.01)in all six seed traits of A.anserina,with considerable variation within each trait.The coefficient of variation for thousand-grain weight was the highest(23.91%),making it an important index for selecting varieties.2)Seed thickness and thousand-grain weight showed a significantly positive correlation(P<0.01)with seed length,width,length-to-width ratio,and circumference,indicating their importance as selection indices for superior A.anserina varieties.3)The thirty seed sources were classified into five clusters,with clusters 2 and 3 exhibiting relatively larger values for all parameters,thereby suggesting their potential as candidate populations for variety selection.4)Principal component analysis and comprehensive evaluation revealed that seed thickness,thousand-grain weight,and seed length were the major factors influencing the variation in A.anserina seed traits.Among the seed sources,source'4'obtained highest comprehensive trait score of 2.35,making it a candidate for the best variety breeding.[Conclusion]Source'4'exhibits favorable comprehensive traits and can be considered as a candidate for screening new A.anserina varieties and as a primary seed source for cultivation.The research provids a theoretical basis for the breeding of new A.anserina varieties.
Argentina anserinaseedseed traitsprincipal component analysiscomprehensive evaluation
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