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The Physiological Basis for Yield Differences between Four Genotypes of Groundnut (Arachis Hypogaea) in Response to Drought. I. Dry Matter Production and Water Use

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Relation http://oar.icrisat.org/3711/
http://dx.doi.org/10.1017/S0014479700015945
 
Title The Physiological Basis for Yield Differences between Four Genotypes of Groundnut (Arachis Hypogaea) in Response to Drought. I. Dry Matter Production and Water Use
 
Creator Matthews, R B
Harris, D
Rao, R C N
Williams, J H
Wadia, K D R
 
Subject Groundnut
 
Description Four genotypes of groundnut grown with limited irrigation in a medium depth Alfisol in Central India transpired similar total amounts of water (220–226 mm) over the season, but produced different amounts of shoot dry matter (390–490 g m−2). The extraction front of Kadiri 3 moved most rapidly down the soil profile which may have enabled it to maintain the fastest rates of transpiration when soil water depletion was greatest. Tap root extension rates of Kadiri 3 in the first 32 days after sowing were also the fastest. NC Ac 17090 was more efficient than the other genotypes in extracting water immediately after irrigation from the upper 40 cm of the soil, but this had little value in determining the pattern of water availability in this experiment. Differences in the water extraction characteristics of these genotypes explain little of the variation in dry matter:water ratio, and do not account for the major variation in harvest index associated with drought.
 
Publisher Cambridge University Press
 
Date 1988
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3711/1/JA_657.pdf
Matthews, R B and Harris, D and Rao, R C N and Williams, J H and Wadia, K D R (1988) The Physiological Basis for Yield Differences between Four Genotypes of Groundnut (Arachis Hypogaea) in Response to Drought. I. Dry Matter Production and Water Use. Experimental Agriculture, 24. pp. 191-202.