Journal of Agricultural Science and Technology ›› 2021, Vol. 23 ›› Issue (5): 153-159.DOI: 10.13304/j.nykjdb.2020.0752

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Influences of Exogenous Selenium Mineral Powder on Protective Enzyme Activity, Yield and Selenium Content of Foxtail Millet

ZHANG Yujie, GUO Pingyi*, GUO Meijun, ZHOU Hao, YUAN Xiangyang, DONG Shuqi, WANG Yuguo   

  1. College of Agronomy,Shanxi Agricultural University, Shanxi Taigu  030801, China
  • Received:2020-08-27 Accepted:2020-10-16 Online:2021-05-15 Published:2021-05-10

外源硒矿粉对谷子保护酶活性、产量和籽粒中硒含量的影响

张宇杰,郭平毅*,郭美俊,周浩,原向阳,董淑琦,王玉国   

  1. 山西农业大学农学院, 山西 太谷 030801
  • 通讯作者: 郭平毅E-mail: pyguo126@126.com
  • 作者简介:张宇杰 E-mail: 627021870@qq.com
  • 基金资助:

    国家现代农业产业技术体系专项(CARS-06-13.5-A28);

    山西省粮食系统科技攻关计划项目(201802);

    山西农业大学青年拔尖创新人才支持计划项目(TYIT201406)

Abstract: In order to study the effect of selenium mineral powder application on the protective enzyme activity, yield and selenium content of millet, by Jingu 21 and Zhangzagu 10 as experimental materials, this paper carried out a field experiment to study the effects of different dosage selenium mineral powder (0, 204, 394.8, 789.45 kg·hm-2)on the growth and development of millet and the selenium content in grain. The results showed that: with the increase in the amount of selenium mineral powder, the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in the leaf of millet at each growth stage showed an increase first and then a decrease trend, the content of malondialdehyde (MDA) decreased first and then increased, and both reached the extreme value during T2 treatment. Compared with the control, the T2 treatment had the most significant effect on the ear weight, ear grain weight, 1 000-grain weight and yield of millet. The yield of Jingu 21 and Zhangzagu 10 increased by 8.64% and 664%, respectively. The application of selenium mineral powder could increase the selenium content in millet grains. Under T2 treatment, the selenium content in Jingu 21 grains reached the highest 0.131 mg·kg-1, which was 3.5 times higher than the control. Soil selenium application of 394.8 kg·hm-2 could be used as the recommended application rate of selenium mineral powder in the production of selenium-rich millet.

Key words: foxtail millet, selenium content, yield, protective enzyme activity, rich selenium mineral powder

摘要: 为研究硒矿粉施用量对谷子保护酶活性、产量和籽粒中硒含量的影响,采用大田试验,以晋谷21号和张杂谷10号为试验材料,基施不同用量(0、204、394.8、789.45 kg·hm-2)的硒矿粉,研究硒矿粉对谷子生长发育及籽粒硒含量的影响。结果表明:随着硒矿粉用量的增加,谷子各生育期叶片的超氧化物歧化酶、过氧化物酶、过氧化氢酶活性呈现先增加后降低的趋势,丙二醛含量呈先降低后增加的趋势,且均在T2处理时达到极值。与对照相比,T2处理对谷子穗重、穗粒重、千粒重以及产量的影响效果最为显著,晋谷21号和张杂谷10号的产量分别增加了8.64%、6.64%。施用硒矿粉可以提高谷子籽粒中的硒含量,在T2处理下,晋谷21号籽粒硒含量最高达到了0.131 mg·kg-1,比对照增加了3.5倍。土壤施硒量为394.8 kg·hm-2可以作为硒矿粉在富硒小米生产中的推荐施用量。

关键词: 谷子, 硒含量, 产量, 保护酶活性, 富硒矿粉

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