Publication Date
1993
Description
Three plants from each of 2 white clover (Trifolium repens L.) cultivars, Grasslands Kopu and a breeding line selected from germplasm of Syrian origin, were grown in large pots of soil and physiological characteristics measured during a continuous drying phase of 18-37 days. By the end of the experiment, leaf water potential was -2.5 MPa, gravimetric soil water content was 13% (considerably lower than -1.5 MPa), and leaf relative water content was 60%. A 91- fold increase in leaf praline concentration indicated that water stress had altered plant metabolism. Differences in the rate of soil drying occurred between eultivars, but expression of physiological measurements against soil water content showed the differences between cultivars were relatively small. Variation in node appearance rate and stolon extension rate, within cultivars was high. In general, the response functions between cultivars were more similar than the response functions of individual plants (genotypes) within a cultivar.
Citation
Barker, D J.; Caradus, J R.; and McManus, M T., "Physiological response of White Clover Genotypes to Water Deficit" (2024). IGC Proceedings (1993-2023). 10.
https://uknowledge.uky.edu/igc/1993/session7/10
Included in
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Physiological response of White Clover Genotypes to Water Deficit
Three plants from each of 2 white clover (Trifolium repens L.) cultivars, Grasslands Kopu and a breeding line selected from germplasm of Syrian origin, were grown in large pots of soil and physiological characteristics measured during a continuous drying phase of 18-37 days. By the end of the experiment, leaf water potential was -2.5 MPa, gravimetric soil water content was 13% (considerably lower than -1.5 MPa), and leaf relative water content was 60%. A 91- fold increase in leaf praline concentration indicated that water stress had altered plant metabolism. Differences in the rate of soil drying occurred between eultivars, but expression of physiological measurements against soil water content showed the differences between cultivars were relatively small. Variation in node appearance rate and stolon extension rate, within cultivars was high. In general, the response functions between cultivars were more similar than the response functions of individual plants (genotypes) within a cultivar.
