ISHS Acta Horticulturae 291: III International Mango Symposium
INTERPRETATION OF GROWTH RESPONSES OF SOME MANGO CULTIVARS GROWN UNDER CONTROLLED TEMPERATURES. |
| Authors: | A.W. Whiley, T.S. Rasmussen, B.N. Wolstenholme, J.B. Saranah, B.W. Cull |
| Abstract:
Ten mango cvs of tropical and subtropical origin ('Carabao', 'Kensington', 'Nam Dok Mai', 'Alphonso', 'Dashehari', 'Florigon', 'Glenn', 'Haden', 'Irwin' and 'Sensation') were grafted into cv Kensington seedling rootstock and held at four day/night temperatures (15/10°C, 20/15°C, 25/20°C and 30/25°C) in sublit growth rooms for 20 weeks. This paper reports on the growth responses of the polyembryonic cvs Carabao and Kensington and the monoembryonic cvs Glenn, Haden and Irwin. Vegetative growth, measured by flushing activity and dry matter production, increased with temperature. All cvs grew vegetatively at 25/20°C and 30/25°C. Cultivars which did not grow at 20/15°C were 'Carabao' and 'Kensington'. Cultivars Kensington, Glenn, Haden and Irwin produced flower panicles at 15/10°C. Temperature and the related growth activity also affected the concentration of starch in the woody tissue of rootstock trunks at the end of 20 weeks (15.9% starch at 15/10°C v. 4.8% starch at 30/25°C). 'Irwin' had the highest starch concentration at the two higher temperatures (x2 of any other cultivar at 30/25°C) while 'Kensington' the lowest starch level at 25/20°C, c. 50% of most other cultivars. These data are discussed in relation to productivity of mango in tropical climates. | |
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