新疆地区10种蔷薇属植物表型分析与评价OA

This paper used 10 species of Rosa plants distributed in Xinjiang as test materials and investigated and observed their phenotypic traits,aiming to screen the elite germplasm.Principal component analysis and cluster analysis were performed for comprehensive evaluation.The results showed that 13 of the 20 phenotypic traits could be used for principal component analysis,and 4 principal components were extracted,with a cumulative contribution rate of 81.594%.Crown width,plant height,growth vigor,flower quantity,floral fragrance,leaflet width,and growth habit can reflect the basic morphological characteristics of Rosa plants in Xinjiang.According to the comprehensive evaluation,the top 5 germplasm species were R.fedtschenkoana,R.laxa,R.tomurensis,R.spinosissirna var.altaica,and R.laxa var.mollis.Cluster analysis classified the 10 species into two categories,indicating that the Rosa resources in Xinjiang still had obvious phenotypic differentiation under the common stress background.This study provided basic data for the comprehensive evaluation,analysis,and efficient utilization of Rosa plant resources in Xinjiang.At the same time,it provided a basis for the selection of excellent parents for Rosa breeding based on phenotypic traits.