Plant water relations as selection criteria for drought tolerance in mustard |
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Authors: | R. P. Singh D. P. Singh |
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Affiliation: | (1) Department of Agronomy, Haryana Agricultural University, 125 004 Hisar, India |
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Abstract: | Genotypes of mustard (B. juncea) were evaluated for concurrent changes in leaf water potential (Ψ), leaf osmotic potential (π), leaf turgor potential (P) and leaf relative water content (RWC) during moisture stress at reproductive stage of growth. The slope ‘b’ in the regression between Ψ and π varied from 0.43 to 0.97 and was positively correlated with P and RWC. The genotypes with ‘b’ around 0.7 were able to maintain P of about 0.5 MPa at Ψ of − 2.5 MPa and thus such value of ‘b’ seems to provide enough degree of tolerance against drought. |
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