Tolerances of wild potato species from different altitudes to cold and heat

Smillie, R.M. and Hetherington, S.E. and Ochoa, C. and Malagamba, P. (1983) Tolerances of wild potato species from different altitudes to cold and heat. Planta, 159 (2). pp. 112-118.

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The ability of wild potatoes (Solanum spp.) to adapt to potentially stressful environmental temperatures was investigated by measuring the cold and heat tolerances of plants grown near sea-level in Lima following collection of tubers from plants growing naturally at altitudes ranging from 450 to 4,200 m. Relative cold tolerance was measured in leaves stored at 0°C by the decrease in the induced rise of chlorophyll fluorescence. Similarly, changes in chlorophyll fluorescence were used to determine the relative heat tolerance of leaves heated at 41°C for 10 min. With increasing altitude, the cold tolerance of different species tended to increase and conversely, heat tolerance decreased. However, these two genotypic adaptations were not closely correlated and appear to vary independently of each other in response to climate.

Item Type: Article
Uncontrolled Keywords: Altitudinal distribution and temperature stress, Chlorophyll fluorescence (and stress), Solanum, temperature tolerance, Stress (temperature), Temperature stress (cold, heat)
Author Affiliation: Plant Physiology Unit, CSIRO Division of Food Research, Macquarie University, North Ryde, P.O. Box 52, 2113, Sydney, NSW, Australia
Subjects: Plant Production
Plant Physiology and Biochemistry > Plant Physiology
Divisions: Other Crops
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 20 Apr 2013 11:38
Last Modified: 20 Apr 2013 11:38
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