[1]高祺,李明,朴琳,等.拔节期弱光和渍水胁迫对春玉米光合作用、根系生长及产量的影响[J].江苏农业学报,2018,(06):1276-1286.[doi:doi:10.3969/j.issn.1000-4440.2018.06.011]
 GAO Qi,LI Ming,PIAO Lin,et al.Effects of weak light and waterlogging stress at jointing stage on photosynthesis, root growth and yield of spring maize[J].,2018,(06):1276-1286.[doi:doi:10.3969/j.issn.1000-4440.2018.06.011]
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拔节期弱光和渍水胁迫对春玉米光合作用、根系生长及产量的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年06期
页码:
1276-1286
栏目:
耕作栽培·资源环境
出版日期:
2018-12-25

文章信息/Info

Title:
Effects of weak light and waterlogging stress at jointing stage on photosynthesis, root growth and yield of spring maize
作者:
高祺李明朴琳晏君瑶李乔肖佳雷金萍
(东北农业大学农学院,黑龙江哈尔滨150030)
Author(s):
GAO QiLI MingPIAO LinYAN Jun-yaoLI QiaoXIAO Jia-leiJIN Ping
(College of Agriculture, Northeast Agricultural University, Harbin 150030, China)
关键词:
玉米拔节期弱光渍水光合作用根系产量
Keywords:
maizejointing stageweak lightwaterloggingphotosynthesisrootyield
分类号:
S513.01
DOI:
doi:10.3969/j.issn.1000-4440.2018.06.011
文献标志码:
A
摘要:
为探讨弱光和渍水共同胁迫对春玉米生长发育及生理性状的影响,2015-2016年在东北农业大学园艺站进行盆栽试验,以高产品种德美亚1号和德美亚2号为研究对象,拔节孕穗期进行 10~20 d的弱光渍水处理。结果表明,与对照相比,弱光、渍水胁迫导致玉米根长、根尖数和直径的降低,伤流量下降了 65.0%~937%,渍水胁迫对伤流量的影响显著。弱光+渍水胁迫使玉米叶面积平均降低 29.0%~385%,超过单独弱光或渍水胁迫;同时玉米叶片叶绿素含量平均降低 25.3%~345%,高于弱光胁迫,但是明显低于渍水胁迫。弱光+渍水胁迫使玉米干物质积累量减少 37.2%~581%,超过单独弱光或渍水胁迫,导致玉米空秆率高达 40%~70%,穗粒数和籽粒质量明显减少,籽粒产量减少 61.8%~754%。弱光+渍水胁迫导致玉米植株顶端和根端生长同时受到抑制,根系吸收能力和叶片光合能力显著降低,导致光合物质积累减少,空秆率大幅增加,穗粒数和籽粒质量均明显减少,产量下降。
Abstract:
The main purpose of this study is to explore the inter-effects of weak light and waterlogging stress on the growth, development and physiological traits of maize. Potting experiment was conducted at the horticultural station of northeast agricultural university in 2015-2016. The high-yielding varieties Demeiya 1 and Demeiya 2 were selected as the research objects, and the weak light and waterlogging stress was performed for 10-20 days at the jointing and booting stages of maize. The results showed that compared with the control, root length, root tip number and diameter decreased under treatment of weak light and waterlogging stress and the average wound flow of maize decreased by 650%-937%. The maize leaf area decreased by an average of 290%-385% under the treatment of weak light and waterlogging, which was higher than that under the treatment of weak light or waterlogging stress alone. The maize leaf chlorophyll content decreased by 253%-345% under the treatment of weak light and waterlogging stress, which was higher than that under the treatment of weak light stress and lower than that under waterlogging stress The accumulation of dry matter in maize decreased by 372%-581% under weak light and waterlogging, which was higher than that under the treatment of weak light or waterlogging stress alone. The rate of bare plant was up to 40%-70%, the number of kernel and grain quality were obviously decreased, grain yield reduced by 618% -754% The growth of maize shoot apex and root apex was inhibited by weak light and waterlogging stress at the same time, root absorptive capacity and leaf photosynthetic capacity decreased significantly, resulting in the reduction of photosynthetic accumulation, a significant increase in empty stalk rate, a significant reduction in grain number per ear and grain quality, and a decrease in yield.

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备注/Memo

备注/Memo:
收稿日期:2018-03-28 基金项目:黑龙江省玉米超高产关键技术研究项目(2017YFD03005006-2) 作者简介:高祺(1992-),男,山东宁津人,硕士研究生,研究方向为作物逆境生理。 通讯作者:李明,(E-mail)liming@neau.edu.cn
更新日期/Last Update: 2018-12-28