浙江农业科学 ›› 2025, Vol. 66 ›› Issue (5): 1120-1125.DOI: 10.16178/j.issn.0528-9017.20240914

• 根块茎类 • 上一篇    下一篇

牛尾山药块茎形态遗传稳定性和选择效果分析

王义琴1,2(), 韩曙1, 龙雯虹1,*()   

  1. 1.云南农业大学 园林园艺学院,云南 昆明 650201
    2.镇宁自治县农业农村局,贵州 安顺 561200
  • 收稿日期:2024-11-29 出版日期:2025-05-11 发布日期:2025-05-20
  • 通讯作者: 龙雯虹(1972—),女,教授,博士,主要从事蔬菜育种与资源评价研究,E-mail:lwh57@sina.com
  • 作者简介:王义琴(1997—),女,硕士,主要从事园艺植物资源利用与农业技术研究,E-mail:2689045034@qq.com
  • 基金资助:
    云南省科技厅科技计划项目(202402AE090012);维西县农民院士科技服务站项目(云科协联〔2023〕22号)

Analysis on genetic stability and selection effect of morphological characteristics of tubers of Niuwei yam

WANG Yiqin1,2(), HAN Shu1, LONG Wenhong1,*()   

  1. 1. College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan
    2. Zhenning Autonomous County Agriculture and Rural Bureau, Anshun 561200, Guizhou
  • Received:2024-11-29 Online:2025-05-11 Published:2025-05-20

摘要: 牛尾山药生产中存在块茎长度、直径及芦头长度等不整齐的现象,为研究其块茎性状遗传稳定性并选择优良种系,以牛尾山药为研究对象,研究了其地下块茎形态特征的遗传规律。结果表明:无性系内变异系数大小排序为块茎柱形指数(18.84%)>块茎上段均匀指数(14.44%)>块茎下段均匀指数(12.30%)>块茎膨大指数(10.65%),遗传变异系数大小排序为块茎柱形指数(11.10%)>块茎膨大指数(8.49%)>块茎上段均匀指数(7.22%)>块茎下段均匀指数(6.02%),块茎上段均匀指数和块茎下段均匀指数的广义遗传力分别为16.09%和16.48%;无性系后代优化程度大小排序为块茎柱形指数(59.85%)>块茎下段均匀指数(27.16%)>块茎上段均匀指数(20.98%)>块茎膨大指数(0.97%)。因此,建议选择块茎膨大部分长、粗度均匀的山药植株育成优良品种。

关键词: 牛尾山药, 块茎, 形态特征, 变异系数, 遗传力, 选择效果

Abstract:

There are irregular phenomena such as tuber length, diameter, and stem length in the production of Niuwei yam. In order to study the genetic stability of its tuber traits and select excellent lines, Niuwei yam was taken as the research object to investigate the genetic laws of underground tuber morphology characteristics. The results showed that the order of coefficient of variation was tuber cylinder index(18.84%)>evenness index of upper part of tuber(14.44%)>evenness index of lower part of tuber(12.30%)>tuber swelling index(10.65%). The order of coefficient of genetic variation was tuber cylinder index(11.10%)>tuber swelling index(8.49%)>evenness index of upper part of tuber(7.22%)>evenness index of lower part of tuber(6.02%). The generalized heritability of evenness index of upper part of tuber and evenness index of lower part of tuber were 16.09% and 16.48%, respectively. The order of the optimization degree of the four indexes of the clonal progeny was tuber cylinder index(59.85%) > evenness index of lower part of tuber(27.16%)>evenness index of upper part of tuber(20.98%)>tuber swelling index(0.97%). Therefore, it is recommended to choose yam plants with swollen tubers which have uniform length and thickness to develop excellent varieties.

Key words: Niuwei yam, tuber, morphological characteristics, coefficient of variation, heritability, selection effect

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