Sequence of Changes in Maize Responding to Soil Water Deficit and Related Critical Thresholds

Frontiers in Plant Science
Xueyan MaGuangsheng Zhou

Abstract

The sequence of changes in crop responding to soil water deficit and related critical thresholds are essential for better drought damage classification and drought monitoring indicators. This study was aimed to investigate the critical thresholds of maize growth and physiological characteristics responding to changing soil water and to reveal the sequence of changes in maize responding to soil water deficit both in seedling and jointing stages based on 2-year's maize field experiment responding to six initial soil water statuses conducted in 2013 and 2014. Normal distribution tolerance limits were newly adopted to identify critical thresholds of maize growth and physiological characteristics to a wide range of soil water status. The results showed that in both stages maize growth characteristics related to plant water status [stem moisture content (SMC) and leaf moisture content (LMC)], leaf gas exchange [net photosynthetic rate (Pn), transpiration rate (Tr), and stomatal conductance (Gs)], and leaf area were sensitive to soil water deficit, while biomass-related characteristics were less sensitive. Under the concurrent weather conditions and agronomic managements, the critical soil water thresholds in terms of relative soil mo...Continue Reading

References

Feb 7, 2008·Annals of Botany·Peter M Neumann
Jun 17, 2008·Annals of Botany·Oula Ghannoum
Dec 22, 2010·Journal of Experimental Botany·C Pinheiro, M M Chaves
Jun 7, 2014·Frontiers in Plant Science·Sonali Sengupta, Arun Lahiri Majumder
May 25, 2016·Environmental Science and Pollution Research International·Shakeel Ahmad AnjumLongchang Wang
Aug 12, 2016·International Journal of Biometeorology·Rajen BajgainHayden Mahan
Aug 1, 2016·Functional Plant Biology : FPB·Fety Nambinina AndrianasoloPierre Maury
May 1, 2002·The New Phytologist·A D PeukeH Rennenberg

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