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中国农学通报 ›› 2020, Vol. 36 ›› Issue (5): 26-29.doi: 10.11924/j.issn.1000-6850.casb18090116

• 农学·农业基础科学 • 上一篇    下一篇

PEG对不同谷子品种种子活力的影响

辛秋宇, 张笛, 方瑞琳, 董芷佑, 苗兴芬()   

  1. 黑龙江八一农垦大学农学院,黑龙江大庆 163319
  • 收稿日期:2018-09-25 修回日期:2018-11-29 出版日期:2020-02-15 发布日期:2020-02-21
  • 通讯作者: 苗兴芬
  • 作者简介:辛秋宇,女,1994年出生,黑龙江绥化人,硕士研究生,主要从事谷子遗传育种工作。通信地址:163319 黑龙江省大庆市新阳路5号 黑龙江八一农垦大学,E-mail:375258113@qq.com。
  • 基金资助:
    博士后启动金“黑龙江省适宜谷子品种资源的筛选及优质多抗全程机械化栽培技术集成与示范”(LRB13127567)

PEG Affects Seed Vigor of Foxtail Millet Varieties

Xin Qiuyu, Zhang Di, Fang Ruilin, Dong Zhiyou, Miao Xingfen()   

  1. College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing Heilongjiang 163319
  • Received:2018-09-25 Revised:2018-11-29 Online:2020-02-15 Published:2020-02-21
  • Contact: Miao Xingfen

摘要:

为了探究PEG对不同谷子品种种子活力的影响,从而筛选出提高种子活力最适宜的聚乙二醇(PEG)浓度。本次试验选用6个不同浓度0%(CK)、5%、10%、15%、20%、25%的PEG8000对2个谷子品种‘公矮5号’和‘嫩选17’浸种24 h处理,清洗晾干后进行发芽试验,统计发芽率、发芽势及计算发芽指数同时测量根长、芽长。结果表明:‘公矮5号’和‘嫩选17’经过不同浓度PEG处理后,其发芽能力和活力均得到了显著提高。发芽势、发芽率、发芽指数与CK相比,均达显著水平,且以15% PEG处理对种子活力的提高最为显著。通过二因素方差分析,根长在品种间及浓度间均达到极显著差异,芽长在品种间不显著,浓度间极显著。‘公矮5号’在15% PEG处理下根长、芽长与CK相比提高了0.65 cm、1.25 cm。‘嫩选17’在15% PEG处理下根长、芽长与CK相比提高2.26 cm、0.42 cm。

关键词: PEG, 谷子, 品种, 浓度, 种子活力

Abstract:

The objective is to explore the effect of PEG on seed vigor of different foxtail millets varieties, and to select the most suitable PEG concentration for improving seed vigor. In this experiment, 6 different PEG8000 concentrations 0% (CK), 5%, 10%, 15%, 20%, 25% were selected to treat two millets varieties ‘Gong ai 5’ and ‘Nenxuan 17’. After 24 h seed treatment, the germination test was conducted after washing and drying. The germination rate and germination potential were counted and the germination index was calculated. At the same time, the root and bud length were measured. The results showed that the germination ability and seed vigor of ‘Gong ai 5’ and ‘Nenxuan 17’ were significantly improved after treated with different PEG concentrations. The germination potential, germination rate and germination index all reached the significant level compared with that of CK, and 15% PEG showed the best ability to improve seed vigor. Through two-factor analysis of variance, the root length showed extremely significant difference between varieties and concentrations, while the bud length was not significant between the varieties, but it was significant among different concentrations. For ‘Gong ai 5’ under 15% PEG treatment, the root length and bud length increased by 0.65 cm and 1.25 cm compared with that of CK. For ‘Nenxuan 17’ under 15% PEG treatment, the root length and bud length increased by 2.26 cm and 0.42 cm compared with that of CK.

Key words: PEG, foxtail millet, variety, concentration, seed vigor

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