华北农学报 ›› 2025, Vol. 40 ›› Issue (2): 40-48. doi: 10.7668/hbnxb.20195485

所属专题: 生物技术

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

西葫芦种子无壳性状遗传分析及无壳基因Cphl初步定位

董晨晨1, 刘泽慧2, 曹嫒婉1, 许小勇2, 雷逢进1, , 刘庆华1   

  1. 1 山西农业大学 棉花研究所,山西 运城 044000
    2 海南省种业实验室,海南 三亚 572025
  • 收稿日期:2024-10-09 出版日期:2025-05-12
  • 通讯作者:
    雷逢进(1967—),男,山西运城人,研究员,博士,主要从事西葫芦遗传育种研究。
  • 作者简介:

    董晨晨(1994—),男,山西临汾人,助理研究员,硕士,主要从事西葫芦遗传育种研究。

  • 基金资助:
    山西省自然科学研究面上项目(202103021224125); 国家重要特色物种西葫芦育种联合攻关子项目(NYGG20-2)

Genetic Analysis and Preliminary Mapping of Seed Hull-less Gene Cphl in Zucchini

DONG Chenchen1, LIU Zehui2, CAO Aiwan1, XU Xiaoyong2, LEI Fengjin1, , LIU Qinghua1   

  1. 1 Institute of Cotton Research,Shanxi Agricultural University,Yuncheng 044000,China
    2 Hainan Seed Laboratory,Sanya 572025,China
  • Received:2024-10-09 Published:2025-05-12

摘要:

西葫芦的裸仁种子在籽用西葫芦的加工中具有很大的天然优势。为探究西葫芦种子无壳性状的遗传机制,以西葫芦高代自交系种子有壳17pu10(P1)和种子无壳17pu08(P2)为亲本,构建F1(P1×P2)、F2和BC1群体,对后代群体的西葫芦种子性状进行鉴定。结果发现,后代群体的西葫芦有壳种子与无壳种子的数目比例符合3∶1分离比,表明西葫芦种子无壳性状受到单基因调控,且种子无壳基因表现为隐性。利用籽用西葫芦BC1群体对无壳基因进行初步定位,结果表明,籽用西葫芦无壳基因定位于标记InDel3157329和InDel3724121之间,遗传距离分别为1.4,2.6 cM,该区间物理距离为0.6 Mb。对该区间内的24个基因进行注释和功能分析发现,有4个基因直接或间接参与细胞壁、纤维素和木质素的生物合成;进一步分析这4个基因表达量的差异,发现只有Cp4.1LG12g04350Cp4.1LG12g04370在种子发育时期表达量存在显著差异。由此推测,Cp4.1LG12g04350Cp4.1LG12g04370为控制无壳性状的候选基因。此外,还开发出与无壳基因连锁的InDel标记,可作为西葫芦无壳性状鉴定的标记,以加快优质西葫芦种子无壳品种的选育。

关键词: 西葫芦, 无壳基因, 遗传分析, 基因定位, 基因连锁, InDel标记

Abstract:

The naked seeds of zucchinii possess significant natural advantages in processing.To investigate the genetic mechanisms underlying the hull-less trait in zucchini,we utilized the hulled 17pu10 (P1) and the hull-less 17pu08 (P2) as parental strains,and constructed populations of F1 (P1×P2),F2,and BC1.The phenotypes of the zucchini seeds in the progeny population were assessed.The results showed that the number ratio of hulled seeds and hull-less seeds in the progeny population was in line with 3∶1 separation ratio.This indicated that the hull-less trait was regulated by a single gene and that the hull-less allele was recessive.Genetic mapping within this interval revealed that the gene for hull-less in zucchini was located between the markers InDel3157329 and InDel3724121,with genetic distances of 1.4,2.6 cM,respectively,while the physical distance was 0.6 Mb.The annotation and function analysis of 24 genes in the interval showed that 4 genes were directly or indirectly involved in the biosynthesis of cell wall,cellulose and lignin.Further analysis of the expression differences of 4 genes showed that only Cp4.1LG12g04350 and Cp4.1LG12g04370 had significant differences in expression levels during seed development.It was inferred that Cp4.1LG12g04350 or Cp4.1LG12g04370 was the candidate gene controlling the hull-less trait.In addition,InDel markers linked to hull-less genes were developed,which could be used as markers to identify zucchini hull-less traits,so as to accelerate the breeding of high-quality zucchini seed hull-less varieties.

Key words: Zucchini, Hull-less gene, Genetic analysis, Gene mapping, Gene linkage, InDel marked

引用本文

董晨晨, 刘泽慧, 曹嫒婉, 许小勇, 雷逢进, 刘庆华. 西葫芦种子无壳性状遗传分析及无壳基因Cphl初步定位[J]. 华北农学报, 2025, 40(2): 40-48. doi: 10.7668/hbnxb.20195485.

DONG Chenchen, LIU Zehui, CAO Aiwan, XU Xiaoyong, LEI Fengjin, LIU Qinghua. Genetic Analysis and Preliminary Mapping of Seed Hull-less Gene Cphl in Zucchini[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(2): 40-48. doi: 10.7668/hbnxb.20195485.