Abstract:
: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.
journal_name
Plantajournal_title
Plantaauthors
Smillie RM,Hetherington SE,Ochoa C,Malagamba Pdoi
10.1007/BF00392980subject
Has Abstractpub_date
1983-10-01 00:00:00pages
112-8issue
2eissn
0032-0935issn
1432-2048journal_volume
159pub_type
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