Pollen biology in shoe flower
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Date
1987
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Publisher
Kerala Agricultural University
Abstract
A widely divergent collection of 36 types/varieties/species of Hibiscus
was utilized to study the pollen morphology, production, fertility and germination.
Studies on pollen morphology showed that while colour of pollen grains varied, the
shape was more or less constant in all types, varieties and species. Individual pollen
grain was pantoporate, spheroidal and spinose. The types/varieties/species exhibited
wide variation in pollen size, pollen out put, fertility, germination and tube elongation
of pollen grains. Standardisation of media for pollen germination and tube
growth indicated that a medium containing 20 per cent sucrose, 1 per cent agar and
100 ppm boric acid was the best. Pollen grains commenced germination within 30
min of dusting and gave satisfactory germination even after 4 hours of incubation.
Polysiphonous germination was observed in majority of cases.
Description
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Citation
Agricultural Research Journal of Kerala, 25(1), 5-10.