Analysis of Inflorescence Phenotypic Diversity in Musa spp.Germplasm Collections
This study aimed to analyze the diversity of flower bud phenotypic traits in Musa spp.(banana)germplasm re-sources,providing valuable insights for their research and utilization.Forty Musa spp.germplasm resources from Yunnan were selected as test materials,and 24 flower bud phenotypic traits were observed,recorded,and subjected to diversity analysis,principal component analysis,and cluster analysis.The results showed that the Shannon-Wiener index for the 24-flower bud phenotypic traits ranged from 0.199 to 1.249,with notable genetic diversity observed in traits such as bract tip shape,stigma color,and ovary base color.Principal component analysis reduced the 24 traits to eight principal components,accounting for a cumulative contribution of 77.68％,effectively revealing the information on flower bud phenotypic traits in Musa spp.germ-plasm.Cluster analysis classified the 40 Musa spp.germplasms into four distinct taxa.Taxon Ⅰ contains seven copies of M.paradisiaca and three copies of M.sapientum,taxon Ⅱ has 14 copies of M.cavendish,and taxon Ⅲ has three copies of M.acuminate,one copy of M.itinerans,and two copies of M.acuminate,and taxon Ⅳ contains four copies of M.balbisiana,five copies of M.acuminate,and one copy of M.longyajiao;with traits related to bract performance,male bud shape,bract wax pollen,composite petal color,ovary shape,and others are crucial distinguishing features among taxa.The flower bud traits of Musa spp.germplasm resources exhibit rich phenotypic diversity,with 14 analyzed and screened traits representing the domi-nant factors contributing to this diversity.
Musa spp.germplasm resourceinflorescencephenotypic characteristicsdiversity
万方数据
维普
