Defining biological thresholds associated to plant water status for monitoring water restriction effects: Stomatal conductance and photosynthesis recovery as key indicators in potato
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- 作者：David A. Ramí ; reza ; b ; d.ramirez@cgiar.org" class="auth_mail" title="E-mail the corresponding author ; Wendy Yactayoa ; Libby R. Rensc ; José ; L. Rolandoa ; Susan Palaciosa ; Felipe De Mendiburua ; b ; Ví ; ctor Maresa ; Carolina Barredaa ; Hildo Loayzaa ; Philippe Monneveuxa ; Lincoln Zotarellic ; Awais Khana ; Roberto Quiroza
- 关键词：An ; net photosynthesis ; Amax ; Average maximum net photosynthesis ; Arecovery ; Recovery of net photosynthesis ; D ; duration of irrigation ; DAP ; days after planting ; CWSI ; crop water stress index ; gs ; stomatal conductance ; gs_max ; maximum light-saturated stomatal conductance ; IWQ ; irrigated water quantity ; PRI ; photochemical reflectance index ; PWC ; plant water concentration ; Tcanopy ; Canopy temperature ; Tdry ; dry temperature (7 ; ° ; C over the dry bulb temperature) ; Twet ; wet artificial referen
- 刊名：Agricultural Water Management
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：177
- 期：Complete
- 页码：369-378
- 全文大小：2000 K
文摘
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Two timings and 3 intensities of water restriction treatments were tested in potato.
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Early-severe treatment caused a physiological impairment and drastic yield reduction.
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0.05 mol H2O m−2 s−1 of stomatal conductance was identified as a severity threshold.
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Crop water stress index showed highest correlation with stomatal conductance.
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Photosynthesis recovery analyses helped to define the timing for traits assessment.