Analysis on Seed Characteristics from Various Populations of Commelina communis L.
To identify the optimal environmental conditions for regulating the seed characteristics of Commelina communis L.,seeds from 46 populations of C.communis spanning Heilongjiang,Jilin,Liaoning,Hebei,Jiangsu,Zhejiang,Hubei,and Guizhou were utilized as experimental materials in 2016.We measured morphological indicators of C.communis seeds,including length,width,thickness,and 100-seed weight.To analyze these data,we used correlation analysis,cluster analysis,and principal component analysis.Through these analyses,we determined the morphological characteristics of the seeds and their correlations with environmental factors.Based on the adaptability of C.communis to different regions and climatic environments,these 46 populations were divided into two groups.Afterwards,we expounded the correlation between these classified groups and environmental factors,and then summarized the adaptive patterns of C.communis to the environment.The results showed that the coefficients of variation for seed characteristics differed among C.communis populations,with the 100-seed weight exhibiting the greatest variation,up to 17.8％.There were highly significant positive correlations between seed length and seed width,seed length and 100-seed weight,seed width and seed thickness,seed width and 100-seed weight,as well as seed thickness and 100-seed weight.Significant or highly significant positive correlations were also between longitude,latitude,and pesticide use history with seed morphological characteristics.Conversely,there were significant or highly significant negative correlations between annual average rainfall and annual average temperature with seed morphological characteristics.These findings indicated that strong correlation existed between the morphological characteristics of C.communis seeds and environmental factors.These 46 populations could be divided into two groups.The first group included 8 populations,primarily from southern China,with smaller,nearly round seeds.The second group included 38 populations,mainly from northern China,with relatively larger,nearly elliptical seeds.We could infer that geographical difference existed in the shape of C.communis seeds in China,with smaller seeds found in the south and larger seeds in the north.The study provides a theoretical foundation for the prevention and control of C.communis through the regulation of seed bank size.
Commelina communis L.seedmorphological characteristicdiversityenvironmental factor
万方数据
维普
