ISHS Acta Horticulturae 175: Symposium on Physiology of Productivity of Subtropical and Tropical Tree Fruits
A SCREENING TECHNIQUE FOR LYCHEE GENOTYPES ADAPTED TO WARM CLIMATES |
| Authors: | C.M. Menzel, B.F. Paxton |
| Abstract:
In lychee (Litchi chinensis Sonn.), high day/night temperatures (30/25, 25/20, 20/15 compared to 15/10°C) increased mean and variability of stem extension in seedling selections of 6 cultivars ('Bengal', 'Haak Yip', 'Kwai May Red', 'Gee Kee', 'Tai So' and 'Wai Chee'). There was a strong effect of cultivar on growth, but the responses to temperature were similar. The rate of flushing of the different seedling cultivars in the glasshouse at high temperatures (30/25°C) was in close agreement to the relative vigour and consistency of flowering of the parent cultivars in the field in subtropical Queensland, Australia (Lat. 27°S). The assessment of lychee seedlings for low vigour in a heated glasshouse appears to be a useful technique for the initial screening, prior to field evaluation, of adapted genotypes which flower and fruit under warm conditions. | |
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