浙江农业科学 ›› 2024, Vol. 65 ›› Issue (11): 2597-2600.DOI: 10.16178/j.issn.0528-9017.20230851

• 果树与蔬菜 • 上一篇    下一篇

西瓜子叶黄化突变基因遗传规律研究

张朝阳(), 顾妍, 徐兵划, 程瑞, 黄大跃, 孙玉东*()   

  1. 江苏徐淮地区淮阴农业科学研究所, 江苏, 淮安 223001
  • 收稿日期:2023-08-23 出版日期:2024-11-11 发布日期:2024-11-15
  • 通讯作者: 孙玉东,男,研究员,专业方向为蔬菜育种研究,E-mail:751665242@qq.com
  • 作者简介:张朝阳,男,副研究员,主要从事西瓜育种研究,E-mail:287362703@qq.com
  • 基金资助:
    国家西甜瓜产业技术体系(CARS-25)

Study on the genetic patterns of cotyledons yellow mutation genes in watermelon

ZHANG Chaoyang(), GU Yan, XU Binghua, CHENG Rui, HUANG Dayue, SUN Yudong*()   

  1. Huaiyin Institute of Agricultural Sciences in Xuhuai Region of Jiangsu, Huai'an 223001, Jiangsu
  • Received:2023-08-23 Online:2024-11-11 Published:2024-11-15

摘要:

以子叶黄化突变体y103与叶色正常植株w3为材料,研究其主要农艺性状、遗传规律、叶绿素含量,发现该突变体子叶期开始表现叶色黄化,子叶浅黄色,整个生育期真叶浅黄色,植株矮小,生长缓慢,果实质量明显低于正常植株,果实质量只有正常植株果实质量的47.0%;在苗期和花期,叶绿素含量比正常植株显著降低。以突变体与1个正常叶色自交系为亲本构建3世代群体,对突变体叶色黄化性状遗传规律进行分析,结果表明,叶色黄化性状不完全受显性单基因控制,将该基因命名为YD。该基因杂合时(YDga)表现为叶片黄化。

关键词: 西瓜, 突变体, 子叶黄化, 遗传规律

Abstract:

Using the etiolation mutant y103 and the normal leaf colored plant w3 as materials, the main agronomic traits, genetic law, and chlorophyll content were studied. It was found that the mutant began to exhibit yellowing of leaf color during the cotyledon stage, with light yellow cotyledons and light yellow true leaves throughout the growth period. The plant was short and grew slowly, with significantly lower fruit quality than the normal plant, and the fruit quality was only 47.0% of the fruit quality of the normal plant. During the seedling and flowering stages, the chlorophyll content significantly decreased compared with the normal plants. A 3-generation population was constructed using a mutant and a normal leaf color inbred line as parents. The genetic law of the etiolation trait of the mutant was analyzed, and the results showed that the etiolation trait of the mutant was not completely controlled by a dominant single gene, which named YD. When the gene is heterozygous (YDga), it manifests as leaf yellowing.

Key words: watermelon, mutant, cotyledon etiolation, genetic law

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