有棱丝瓜种质资源主要果实性状综合评价

打开文本图片集

中图分类号：S642.4 文献标识码：A 文章编号：2095-5774（2025）04-0361-07

Abstract：【Objective】Toevaluate fruit trait variations inLufaacutangula germplasmand identify eliteaccessions for breding high-yield，high-qualityvarieties.【Method】Fourteen fruit traits（8qualitative，6quantitative）were measured across 3O accessions.Corelationand principal component analysis（PCA）were applied for evaluation.【Result】 QualitativetraitsshowedgeneticdiversityindicesofO254～1.210，whilequantitativetraitshadcoeffcientsofvariationof 5.09%～25.82%.Theeightqualitativetraitsarepredominantlycontroledbygeneticfactors，exhibitinganaverage broadsense heritabilityof 83.54% . Incontrast，the six quantitative traits show a lower average broad-sense heritability of 71.59%，indicating thattheir expresion is considerably influenced byenvironmental conditions.Fruit length positively corelated with young fruit weightand peduncle length but negativelywithridge numberand waxiness.Young fruit weight positivelycorelatedwithlengthandwidthbutnegativelywithridgenumber.PCAidentifiedfiveprincipalcomponents （cumulativevariance contribution rate： 75.667% ），representing appearance，size，weight，morphology，and ridge characteristics.Ten elite accessions，including'Taiyou 8′ （GGD-5），'Jiannan Huadian Darou'（GGD-4） and 'Chunruyi （GFJ-3），were selected.【Conclusion】PCA efectively evaluates Luffa acutangula fruit traits.The selected germplasms are valuable parental materials for breeding.

Keywords：Luffacutangula;correlationanalysis;principalcomponentanalysis;agronomic traits; germplasmresources

丝瓜是葫芦科（Cucurbitaceae）丝瓜属（LuffaMill.）的一种一年生藤本攀援植物，广泛分布于热带和亚热带地区；在中国主要有丝瓜［L.acutan-gula（L.）Roxb]和水瓜[L.cylindrica（L.）Roem.」两个栽培种，丝瓜因其具有瓜棱凸起的特征又称为有棱丝瓜，而水瓜常被称为肉丝瓜或者普通丝瓜[1]。（剩余6367字）