biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 39:293-297, 1997 | DOI: 10.1023/A:1000684016914

Water relations of Capsicum genotypes under water stress

M.R. Ismail1, W.J. Davies2
1 Department of Agronomy and Horticulture, Pertanian Malaysia University, Serdang, Selangor, Malaysia
2 Department of Biological Sciences, University of Lancaster, Lancaster, England

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.

Keywords: abscisic acid; osmotic potential; pepper; pressure potential; stomatal conductance; water potential

Prepublished online: March 1, 1997; Published: September 1, 1997  Show citation

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Ismail, M.R., & Davies, W.J. (1997). Water relations of Capsicum genotypes under water stress. Biologia plantarum, 39(2), 293-297. doi: 10.1023/A:1000684016914
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