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In-situ chlorophyll fluorescence and related growth of white Guinea yam at different ages

Leaf chlorophyll photochemical attributes and growth of two cultivars of white Guinea yam (Dioscorea rotundata) were examined. The photochemical efficiency (Fv/Fm ratio) of cv. Pepa was significantly higher than that of cv. Abi at 10, 14 and 22 weeks after transplanting (WAT). The peak photosyntheti...

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Main Authors: Aighewi, B.A., Ekanayake, I.J.
Format: Journal Article
Language:Inglés
Published: Wiley 2004
Subjects:
dioscorea rotundata
photosynthesis
leaf area index
yams
yields
guinea yam
photochemical oxidants
chlorophylls
Online Access:https://hdl.handle.net/10568/110225
Summary:Leaf chlorophyll photochemical attributes and growth of two cultivars of white Guinea yam (Dioscorea rotundata) were examined. The photochemical efficiency (Fv/Fm ratio) of cv. Pepa was significantly higher than that of cv. Abi at 10, 14 and 22 weeks after transplanting (WAT). The peak photosynthetic efficiency period for both cultivars was at 18 WAT. Leaf area indices and crop growth rate were greater for Pepa than Abi, as was the leaf transpiration rate. During peak growth periods Pepa was less stressed than Abi according to midday leaf water potentials and stomatal conductance.

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