Root Cell Membrane Heat Tolerance of Two Dwarf Hollies
Open Access
- 1 March 1986
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 111 (2) , 270-272
- https://doi.org/10.21273/jashs.111.2.270
Abstract
The thermostability of Ilex crenata Thunb. ‘Helleri’ and Ilex vomitoria Ait. ‘Schellings’ root cell membranes at supraoptimal temperatures were determined using electrolyte leakage procedures with excised roots. Mathematical models were developed to describe effects of treatment temperature and exposure time interactions on membrane thermostability. Critical temperature, Tc, decreased linearly as exposure duration increased exponentially, and predicted Tc for ‘Helleri’ and ‘Schellings’ were 51.0 ± 0.8 and 52.6 ± 0.7°C, respectively, for a 30-min exposure and 43.9 ± 0.8 and 46.7 ± 0.3° for a 300-min exposure. Three dimensional plots of the fitted mathematical functions are presented.Keywords
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