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农学学报 ›› 2021, Vol. 11 ›› Issue (8): 22-26.doi: 10.11923/j.issn.2095-4050.cjas2021-0001

所属专题: 马铃薯

• 农艺科学/生理生化 • 上一篇    下一篇

利用辐射诱变技术创制甘薯新种质

揭琴(), 陶春来(), 张恭, 崔绍玉, 石颖, 刘洋, 周健东, 杜德玉   

  1. 廊坊市农林科学院,河北廊坊 065000
  • 收稿日期:2021-01-04 修回日期:2021-05-13 出版日期:2021-08-20 发布日期:2021-08-26
  • 通讯作者: 陶春来 E-mail:786352722@qq.com;15203268111@139.com
  • 作者简介:揭琴,女,1979年出生,山东单县人,副研究员,博士,主要从事甘薯遗传育种、繁育及栽培研究。通信地址:065000 廊坊市广阳道285号 廊坊市农林科学院,Tel:0316-2189859,E-mail: 786352722@qq.com
  • 基金资助:
    河北省科技计划项目“杂粮优质多抗特异种质资源创新及高效育种技术研究”(16227508D-5)

New Sweet Potato Germplasm Created by Radiation Mutation Technology

Jie Qin(), Tao Chunlai(), Zhang Gong, Cui Shaoyu, Shi Ying, Liu Yang, Zhou Jiandong, Du Deyu   

  1. Langfang Academy of Agriculture and Forestry Science, Langfang 065000, Hebei, China
  • Received:2021-01-04 Revised:2021-05-13 Online:2021-08-20 Published:2021-08-26
  • Contact: Tao Chunlai E-mail:786352722@qq.com;15203268111@139.com

摘要:

本研究旨在通过甘薯辐射诱变技术获得甘薯有益突变体,丰富甘薯种质资源。本实验以甘薯主栽品种‘商薯19’为试材,用60Co γ射线对其胚性悬浮细胞进行辐照处理,辐照剂量为80 Gy,辐照6周后,将存活下来的细胞团转入含有1.0 mg/L ABA的MS固体培养基上诱导分化,再转入MS培养基获得完整植株138株。通过对辐照后代的顶叶色、叶脉色、顶叶形、叶形、顶端茸毛、薯形、烘干率、可溶性糖含量等性状调查和测定,发现1个株系(‘S19Y038’)顶叶色等性状发生变化,3个株系(‘S19Y116’、‘S19Y215’、‘S19Y219’)烘干率显著提高,分别比对照提高5.98%、5.65%和3.32%,1个株系(‘S19Y013’)可溶性糖含量显著提高,比对照提高17.81%。这些优异性状的突变体丰富了甘薯种质资源,在甘薯优质品种的选育中具有很好的应用前景。

关键词: 辐射诱变, 筛选, 甘薯, 烘干率, 可溶性糖含量, 新种质

Abstract:

The purpose of the study is to obtain beneficial mutants of sweetpotato by radiation mutation technology, and enrich sweetpotato germplasm resources. In this experiment, the main sweetpotato variety ‘Shangshu 19’ was used as test material. The embryogenic suspension cells were irradiated with60Co γ ray and the irradiation doses was 80 Gy. After 6 weeks of irradiation, the surviving cells were transferred into MS solid medium containing 1.0 mg/L ABA to induce differentiation, and then transferred into MS medium to obtain 138 complete plants. Through investigating and determining the top leaf color, vein color, top leaf shape, leaf shape, top villi, potato shape, drying rate and soluble sugar content of the irradiated progenies, it was found that the top leaf color of one line (‘S19Y038’) changed, and the drying rate of three lines (‘S19Y116’, ‘S19Y215’and ‘S19Y219’) were increased significantly by 5.98%, 5.65% and 3.32%, respectively. The soluble sugar content of one strain (‘S19Y013’) was significantly increased by 17.81% compared with that of the control. These mutants with excellent characters could enrich the sweetpotato germplasm resources and have a good application prospect in breeding high-quality sweetpotato varieties.

Key words: Radiation Mutagenesis, Screening, Sweetpotato, Drying Rate, Soluble Sugar Content, New Germplasm

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