Photosynthetic capacity, canopy size and rooting depth mediate response to heat and water stress of annual and perennial grain crops

环境科学 多年生植物 农学 天蓬 蒸腾作用 叶面积指数 用水效率 蒸散量 气孔导度 土壤水分 生长季节 光合作用 光合能力 灌溉 生物 生态学 土壤科学 植物
作者
Giulia Vico,Fiona H. M. Tang,Nathaniel A. Brunsell,Timothy E. Crews,Gabriel G. Katul
出处
期刊:Agricultural and Forest Meteorology [Elsevier BV]
卷期号:341: 109666-109666 被引量:2
标识
DOI:10.1016/j.agrformet.2023.109666
摘要

Perennial grain crops are promoted as an alternative to annual staple crops to reduce negative environmental effects of agriculture and support a variety of ecosystem services. While perennial grains have undergone extensive testing, their vulnerability to projected future warmer and drier growing conditions remains unclear. To fill this gap, we compared leaf temperature and gas exchange rates of annual wheat and different perennial wheat ideotypes using a multi-layer process-based eco-hydrological model. The model combines leaf-level gas exchange, optimality principles regulating stomatal conductance, energy balance, radiative and momentum transfer inside the canopy, as well as soil water balance. Wheat ideotypes are parameterized based on an extensive review of field data. When compared with annual wheat, perennial wheat ideotypes with high leaf area index had between 12% and 39% higher canopy transpiration and net CO2 assimilation, depending on their photosynthetic capacity and water status. Differences in leaf temperature and instantaneous water use efficiency between annual wheat and the perennial ideotypes were moderate (-0.5 to +0.4 °C and -6 to +2%, respectively). Low soil water availability did not alter the ranking of ideotypes in terms of canopy temperature and gas exchanges. During a prolonged dry down, cumulated water use was higher and canopy temperature lower in perennial than annual ideotypes, thanks to the deeper roots, whereas cumulated net CO2 fixation depended on the specific traits and air temperature. Leaf-specific and whole plant characteristics interacted with hydro-meteorological conditions in defining the perennial's vulnerability envelopes to potential heat and water stress. These findings underline the importance of plant characteristics, and particularly leaf area and rooting depth, in defining the suitability of perennial grain crops under future climates.
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
jia完成签到 ,获得积分10
1秒前
万能图书馆应助豚骨拉面采纳,获得10
1秒前
阿怪发布了新的文献求助10
2秒前
pzh应助顾子墨采纳,获得20
2秒前
CR7应助洋子采纳,获得20
3秒前
3秒前
moyue发布了新的文献求助10
3秒前
spencer177给Dragon的求助进行了留言
3秒前
4秒前
无花果应助成诗怡采纳,获得10
4秒前
坚定的跳跳糖完成签到 ,获得积分10
5秒前
Platinum完成签到,获得积分10
5秒前
售后延长完成签到,获得积分10
5秒前
5秒前
5秒前
6秒前
6秒前
之昂完成签到 ,获得积分10
6秒前
123完成签到,获得积分20
7秒前
辣辣完成签到,获得积分10
8秒前
8秒前
9秒前
玛卡巴卡发布了新的文献求助10
9秒前
cheny完成签到,获得积分10
10秒前
酷波er应助青藤采纳,获得10
10秒前
肖志勇发布了新的文献求助10
10秒前
123发布了新的文献求助10
10秒前
吴晨曦发布了新的文献求助10
12秒前
12秒前
lixd完成签到,获得积分10
13秒前
13秒前
英姑应助Hommand_藏山采纳,获得10
14秒前
泽灵发布了新的文献求助10
14秒前
SupZax完成签到,获得积分20
15秒前
15秒前
南风吹梦发布了新的文献求助10
15秒前
脑洞疼应助小米采纳,获得10
15秒前
李健的小迷弟应助HAO采纳,获得10
16秒前
深情安青应助行走的土豆采纳,获得10
16秒前
迷路的游侠完成签到,获得积分10
17秒前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Cognitive Neuroscience: The Biology of the Mind (Sixth Edition) 1000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
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 3958850
求助须知:如何正确求助?哪些是违规求助? 3505102
关于积分的说明 11122496
捐赠科研通 3236558
什么是DOI,文献DOI怎么找? 1788899
邀请新用户注册赠送积分活动 871424
科研通“疑难数据库(出版商)”最低求助积分说明 802794