Coupled soil water stress and environmental effects on changing photosynthetic traits in wheat and maize

蒸腾作用 光合作用 农学 气孔导度 用水效率 土壤水分 蒸汽压差 水势 天蓬 环境科学 化学 灌溉 生物 植物 土壤科学
作者
Zhenfeng Yang,Juncang Tian,Zhi Wang,Feng Kong,Zan Ouyang,Lixin Zhang,Xiaojing Yan
出处
期刊:Agricultural Water Management [Elsevier BV]
卷期号:282: 108246-108246 被引量:1
标识
DOI:10.1016/j.agwat.2023.108246
摘要

Soil water deficits limit the photosynthetic productivity of crops, resulting in reduced yields. However, the effects of soil water stress on leaf gas exchange parameters, actual quantum efficiency (ΦPSII), photosynthetic capacity (maximum electron transfer rate ETRmax, maximum photosynthetic rate Anmax, maximum carboxylation rate Vcmax25) and environmental parameters, such as photosynthetic active radiation (PAR), vapour pressure deficit (VPD), remains unclear. Especially, the dynamic responses of crops with different canopy structure types and phenological stages to water stress needs to be further clarified. In this study, we conducted a field experiment using wheat and maize under complete rainfall isolation to study the effects of coupled water stress and environmental factors on leaf gas exchange processes and photosynthetic capacity. Our results showed that the ΦPSII - PAR relationship in the wheat leaves(a C3 plant) was more sensitive to water stress than was that in the maize leaves (a C4 plant) and significantly differed with phenological stage. The coupling of water stress with VPD had a more pronounced effect on the gas exchange parameters (net photosynthetic rate (An), stomatal conductance (gsw), transpiration efficiency (TE), intrinsic water use efficiency (WUEi)) than coupling with PAR, especially for wheat, where the coupling effect of soil water content (SWC) with VPD was more pronounced as the degree of water stress increased. The SWC status did not significantly alter the wheat An-PAR relationship, in contrast to that in maize, wherein a strong effect of SWC on the An-PAR relationship was observed. Water stress had a more pronounced limiting effect on ETRmax in wheat than in maize. Anmax showed a weaker relationship with SWC in both wheat and maize, whereas Vcmax25 exhibited a stronger relationship with SWC. Additionally, the physiological response process should take into account the differences between phenological periods. Our study can be used as a reference for precise field irrigation.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
鱼e完成签到,获得积分10
1秒前
1秒前
2秒前
2秒前
song发布了新的文献求助10
4秒前
ding应助时尚初之采纳,获得10
4秒前
罗拉完成签到,获得积分10
4秒前
4秒前
5秒前
yun尘世完成签到,获得积分10
6秒前
6秒前
自信南霜完成签到,获得积分10
6秒前
tingting9完成签到,获得积分10
9秒前
9秒前
10秒前
卡布奇诺完成签到,获得积分10
10秒前
13223456发布了新的文献求助10
10秒前
青山落日秋月春风完成签到,获得积分10
12秒前
13秒前
14秒前
14秒前
小马甲应助动听的雅绿采纳,获得30
15秒前
1177发布了新的文献求助10
17秒前
17秒前
喜喵喵完成签到,获得积分10
18秒前
18秒前
18秒前
18秒前
11关注了科研通微信公众号
19秒前
123456完成签到,获得积分10
20秒前
时尚初之发布了新的文献求助10
20秒前
ddd完成签到,获得积分10
21秒前
喜喵喵发布了新的文献求助10
23秒前
无情的函发布了新的文献求助10
23秒前
麦乐迪完成签到 ,获得积分10
24秒前
SYLH应助云横秦岭家何在采纳,获得10
24秒前
bkagyin应助如意枫叶采纳,获得10
25秒前
科目三应助Quinna采纳,获得10
25秒前
25秒前
彭栋发布了新的文献求助10
25秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989242
求助须知:如何正确求助?哪些是违规求助? 3531393
关于积分的说明 11253753
捐赠科研通 3270010
什么是DOI,文献DOI怎么找? 1804868
邀请新用户注册赠送积分活动 882084
科研通“疑难数据库(出版商)”最低求助积分说明 809136