ISHS Acta Horticulturae 341: IV International Mango Symposium
EFFECTS OF TEMPERATURE ON POLLEN VIABILITY IN MANGO CV KENSINGTON |
| Authors: | M. Issarakraisila, J.A. Considine, D.W. Turner |
| Abstract:
The response of microsporogenesis to low or high temperature was studied to determine the environmental limits for the formation of fertile pollen in the mango cv Kensington. The transition from meiosis to the pre-vacuolate microspore period (about three days at 25/20°C) was found to be the most sensitive phase to low temperature. Pollen fertility was determined primarily by the degree and duration of temperature stress during this transition period. A night temperature below 10°C resulted in pollen grains with a low viability (<50%). The optimum temperature for meiosis was between 15° and 33°C (70 – 85% pollen viability). Vacuolated microspores were also sensitive to low temperature depending on the degree and duration of the low temperature. | |
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