Water relations of Capsicum genotypes under water stress |
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| Authors: | MR Ismail WJ Davies |
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| Institution: | (1) Department of Agronomy and Horticulture, Pertanian Malaysia University, Serdang, 43400 Selangor, Malaysia;(2) Department of Biological Sciences, University of Lancaster, La1 4yq Lancaster, England |
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| Abstract: | Pepper species and cultivars, Capsicum annuum cv. Bell Boy, C. annuum cv. Kulai and C. frutescens cv. Padi, differing in drought
tolerance were investigated for their water relations, stomatal responses and abscisic acid (ABA) content during water stress.
C. frutescens cv. Padi exhibited a greater osmotic adjustment than C. annuum cultivars. Stomatal conductance of cv. Bell Boy
was more sensitive to water stress than that of cvs. Kulai and Padi. In all pepper genotypes, stomatal closure was triggered
in the absence of a large decrease in leaf water status. ABA content in xylem sap and leaf was higher in C. annum cultivars
compared to C. frutescens cv. Padi.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | abscisic acid osmotic potential pepper pressure potential stomatal conductance water potential |
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