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园艺学报 ›› 2023, Vol. 50 ›› Issue (11): 2401-2416.doi: 10.16420/j.issn.0513-353x.2022-0924

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

西瓜EMS诱导的突变体筛选及表型分析

尹丽娟1,*, 王春霞1,*, 李陈浩1, 丁小玲1, 潘晓娜1, 于蓉2, 马含月3, 陈秀红4, 杨建强1, 张显1,**(), 魏春华1,**()   

  1. 1 西北农林科技大学园艺学院,陕西杨凌 712100
    2 宁夏农林科学院园艺研究所,银川 721000
    3 东台国家现代农业产业园,江苏东台 224200
    4 三仓镇农业农村局,江苏东台 224200
  • 收稿日期:2023-03-07 修回日期:2023-05-23 出版日期:2023-11-25 发布日期:2023-11-28
  • 通讯作者:
    **(E-mail:
  • 作者简介:

    *共同第一作者

  • 基金资助:
    西北农林科技大学种业创新专项(2452022116); 现代农业产业技术体系建设专项(CARS-25); 杨凌种业创新中心重点研发项目(Ylzy-sc-01)

Screening and Phenotypic Analysis of EMS Induced Mutants in Watermelon

YIN Lijuan1,*, WANG Chunxia1,*, LI Chenhao1, DING Xiaoling1, PAN Xiaona1, YU Rong2, MA Hanyue3, CHEN Xiuhong4, YANG Jianqiang1, ZHANG Xian1,**(), WEI Chunhua1,**()   

  1. 1 College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100,China
    2 Institute of Horticulture,Ningxia Academy of Agriculture and Forestry,Yinchuan 721000,China
    3 Dongtai National Modern Agricultural Industrial Park,Dongtai,Jiangsu 224200,China
    4 Sancang Town Agriculture and Rural Bureau,Dongtai,Jiangsu 224200,China

摘要:

以甲基磺酸乙酯(Ethyl methane sulfonate,EMS)为诱变剂,分别采用浸种法和滴苗法处理西瓜种质M08的种子和幼苗,对M1和M2代群体单株叶、花、茎、果实等主要农艺性状进行观察、拍照、记录。在浸种法获得的749株M1代单株中共发现叶片黄化、叶片畸形、雄花簇生、瓜胎形状变异等15种突变类型,总突变率达到20.56%;通过滴苗法共成活689株M1代单株,包含10种变异类型,总变异率为19.30%。M2代种子库共收获443份材料,随机选取其中的132个家系进行表型观测,共得到叶片黄化、子叶连结、叶片畸形、叶缘内卷、茎并生、果皮条带变异、植株生长发育迟缓等13种变异类型,总突变率为5.21%。对叶色黄化转绿突变体M1-5家系的M2代群体单株进行表型观测及光合特性分析得出,在转绿前,光合色素含量较低,叶片呈黄色;在转绿后,光合色素含量大幅度提高,叶色由黄转绿,但仍低于正常M08叶片,随着光合色素的累积,黄化转绿突变体的光合能力得以恢复,可正常生长。

关键词: 西瓜, 甲基磺酸乙酯, 诱变, 浸种法, 滴苗法, 突变体

Abstract:

The seeds and seedlings of watermelon germplasm M08 were treated with ethyl methane sulfonate(EMS)as a mutagen by seed soaking method and seedling dropping method. Observation,photography,and recording of major agronomic traits such as leaves,flowers,stems,and fruits per plant in M1 and M2 generations. In this study,749 individual plants of M1 generation were obtained by seed soaking method,and 15 mutation types were found,including leaf yellowing,leaf deformity,male flower cluster,and melon embryo shape variation,the total mutation rate reached 20.56%. A total of 689 M1 generation plants survived through the seedling dropping method,including ten types of variation,with a total variation rate of 19.30%. A total of 443 materials were harvested from the M2 generation,132 families were randomly selected for phenotypic observation. A total of 13 variation types were obtained,including leaf yellowing,cotyledon junction,leaf deformity,leaf margin involution,stem juxtaposition,pericarp banding variation,plant growth and development retardation,the total mutation rate was 5.21%. Phenotypic observation and photosynthetic characteristics analysis of the M2 generation population of the M1-5 family with yellowing to greening leaf color mutant showed that before turning green,the photosynthetic pigment content was low and the leaves were yellow,after turning green,the content of photosynthetic pigments significantly increased,and the leaf color changed from yellow to green,but it was still lower than the normal M08 leaf. With the accumulation of photosynthetic pigments,the photosynthetic ability of the yellowing to greening mutant was restored and it could grow normally.

Key words: watermelon, ethyl methane sulfonate(EMS), mutagenesis, seed soaking method, drop seedling method, mutant