NDLI: Plant water parameters and the remote sensing R 1300/R 1450 leaf water index: controlled condition dynamics during the development of water deficit stress

Content Provider	Springer Nature Link
Author	Seelig, Hans Dieter Hoehn, Alexander Stodieck, Louis S. Klaus, David M. Adams, William W. Emery, William J.
Copyright Year	2009
Abstract	Plants with different abilities for osmotic adjustment (cowpea, bean, and sugarbeet) were subjected to gradually decreasing soil water content. During the development of water deficit stress, various plant water parameters were measured to characterize their relationship to the near infrared R 1300/R 1450 leaf water index, which is based on the measurement of light reflected from leaves. In all three species, leaf water thickness (LWT), leaf cell relative water content (RWC), and overall leaf thickness remained relatively constant under moderate water deficit stress. However, at the point when plants could no longer cope with the increasing level of water deficit stress, LWT, RWC, and leaf thickness were found to decrease substantially, signaling the onset of leaf dehydration. The R 1300/R 1450 leaf water index followed the RWC very closely in cowpea and bean leaves, and with some time lag in sugarbeet leaves. The R 1300/R 1450 index may therefore be used as a feedback-signal in precision irrigation control, signaling effectively the physiological response of plants when water deficit stress becomes detrimental. RWC and the R 1300/R 1450 index were linearly correlated in cowpea and bean leaves, but not in sugarbeet leaves.
Starting Page	357
Ending Page	365
Page Count	9
File Format	PDF
ISSN	03427188
Journal	Irrigation Science
Volume Number	27
Issue Number	5
e-ISSN	14321319
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-03-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Climate Change Sustainable Development Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Environment Agriculture
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science Water Science and Technology

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