大花蕙兰与春兰杂交后代表型性状遗传倾向和混合遗传分析

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关键词兰属；表型性状；杂种优势；主基因 + 多基因；遗传分析

中图分类号S682.31文献标识码A

文章编号 0517-6611（2026）02-0046-07

doi： 10.3969/j.issn.0517-6611.2026.02.007

Abstract Using F1 progeny from a hybrid between Cymbidium ‘ 875′′ and Cymbidium goeringi “Maoze Shuixian” to analyze phenotypic traits based on a major gene plus polygene mixed inheritance model.The results showed that in the F1 population，the 11 phenotypic phenotypic traits were extensively isolated，with a coefficient of variation ranging from 10.31% to 31.16% .With the exception of leaf length，all other traits’midparentheterotcusmostatedfntdifecatOeveterobeltosisufotfoertaseefo erlongitudinaldiameeidlepallngtnddlesaldthereallsigficantlderetattOlevelLeaflgthfidth， flowerarrowlngthfowerlogiudialdametedlabelllengtherealldominatedbytoirsofditivedomiantajorsh heritability of major genes was 99.79% 98.45% 12.66% 98.61% and 96.10% ，respectively.The trait of middle sepal length，middle sepal width，and labellum width were dominated by two pairs of additive major genes.Major genes had heritabilities of 74.53% 43.25% ，and 89.06% ， respectively.talodlsoraeeeateaepallgthdalsepalheoisditiedoatstat ic，two equal additive，and one pair of additive-dominant major gene models，with heritability of major genes at 96.99% 65.82% ，and 89.06% ， respectivel.isuxplodioforatisiesecoeatoofdg erences for the selection of parents and breeding of new varieties in orchid.

KeywordsCymbidium;Phenotypic trait;Heterosis;Major gene + polygene;Genetic analysis

兰花是整个兰科（Orchidaceae）植物的总称，为起源于距今1亿多年前的子遗植物，经过长期的自然和人工选择，形成了花朵精巧奇特、株型千姿百态、色泽丰富的种类[1-2]，集观赏、药用、科研及生态价值于一体，产生了巨大的经济效益和社会效益，已成为世界范围内花卉研究的热点和花卉产业的重要组成部分。（剩余10740字）