中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 干旱胁迫下BR与N、P、K配合对羊草生长及抗旱性的影响 草业学报 2018 (11) 171-178
Position: Home > Articles > Effects of brassinolide and N,P,K fertiliser on growth of Leymus chinensis under drought stress Acta Prataculturae Sinica 2018 (11) 171-178

干旱胁迫下BR与N、P、K配合对羊草生长及抗旱性的影响

作  者：
宋吉轩;吕俊;宗学凤;何秀娟;徐宇;吴潇;王三根
关键词：
羊草;油菜素内酯(BR);干旱胁迫;渗透调节;酶特性
摘  要：
受气候变化如干旱胁迫作为危害羊草主要的环境因子之一,对其生产力的提高产生了严重的影响。通过盆栽人工控水法,研究在正常(土壤相对含水量为80%)和干旱(土壤相对含水量为50%)条件下油菜素内酯(BR)与氮、磷、钾(N、P、K)配合处理对羊草幼苗生长及其抗旱性的影响。结果表明:适当浓度的BR可以减轻干旱胁迫对植株的伤害,而BR与N、P、K配合(1%尿素+1%磷酸二氢钾+0.10mg·L-1 BR)则可进一步促进植株生长和营养物质的积累,提高羊草的抗旱性,效果更好。这种效应与其调控植株生长,提升渗透调节能力,降低膜脂的过氧化作用,增强抗氧化酶活性等生理特性密切相关。配合处理下羊草的株高、鲜重、干重和根系活力比干旱对照(CK2)分别增加28.96%、62.46%、45.21%和19.08%,N、P、K含量分别增加20.74%、236.84%和42.31%,营养代谢相关酶硝酸还原酶(NR)、酸性磷酸酶(ACP)和苹果酸脱氢酶(MD)活性发生改变,脯氨酸、可溶性蛋白和可溶性糖分别增加57.20%、22.82%和5.94%,而丙二醛和叶片电导率分别降低37.42%和55.79%,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、谷胱甘肽还原酶(GR)和抗坏血酸过氧化物酶(APX)分别增加158.40%、38.15%、32.97%、30.00%和28.74%。
译  名：
Effects of brassinolide and N,P,K fertiliser on growth of Leymus chinensis under drought stress
作  者：
SONG Ji-xuan;L Jun;ZONG Xue-feng;HE Xiu-juan;XU Yu;WU Xiao;WANG San-gen;Institute of Biotechnology,Guizhou Academy of Agricultural Sciences;College of Agronomy and Biotechnology,Southwest University;
单  位：
SONG Ji-xuan%L Jun%ZONG Xue-feng%HE Xiu-juan%XU Yu%WU Xiao%WANG San-gen%Institute of Biotechnology,Guizhou Academy of Agricultural Sciences%College of Agronomy and Biotechnology,Southwest University
关键词：
Leymus chinensis;;brassinolide(BR);;drought stress;;osmotic adjustment;;enzyme characteristics
摘  要：
Climate change is one of the main environmental factors with the potential to influence the productivity of Leymus chinensis.In this paper,potted plants were used to study the effects of brassinolide(BR)and nitrogen,phosphorus and potassium(N,P,K)on the growth and drought resistance of L.chinensis under normal(soil water content 80% of field capacity)and drought(soil water content 50% of field capacity)conditions.The results showed that appropriate BR concentration could alleviate plant injury under drought stress while the combination of BR and N,P,K(1% urea+1% potassium dihydrogen phosphate+0.10 mg·L-1 BR)could promote plant growth and nutrient accumulation,further improving drought resistance in L.chinensis.This was closely related to key physiological characteristics including regulation of plant growth,enhanced osmotic adjustment,reduced membrane lipid peroxidation and enhanced antioxidant enzyme activity.Plant height,fresh weight,dry weight and root vigour increased by 28.96%,62.46%,45.21%and 19.08%in the BR treated plants and with N,P,K by 20.74%,236.84% and 42.31% respectively compared with the CK.The activities of nitrate reductase(NR),acid phosphatase(ACP)and malate dehydrogenase(MD)changed with proline content;soluble protein and soluble sugar increased by 57.20%,22.82%and 5.94%respectively.Malondialdehyde conductivity and leaf permeability were reduced by 37.42% and 55.79% respectively,while superoxide dismutase(SOD),peroxidase(POD),catalase(CAT),glutathione reductase(GR)and ascorbate peroxidase(APX)activity increased(158.40%,38.15%,32.97%,30.00%and 28.74%respectively).

相似文章

导出引用
计量
文章访问数: 13
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46