STUDIES ON THE PATTERN OF SELF- INCOMPATIBILITY IN RELATION TO MORPHOLOGICAL AND MOLECULAR DIVERSITY IN HAMELIA PATENS JACQ. (RUBIACEAE)
Journal Title: International Journal of Botany and Research (IJBR) - Year 2017, Vol 7, Issue 3
Abstract
Genetic variation provides the foundation for species to respond to changes in the natural environment. Self fertilization is a common mating system in plants, and is known to reduce genetic diversity; increase genetic structure and potentiality put population at greater risk of extinction. Hamelia patens Jacq. is an exotic ornamental plant, widely distributed in Indian garden. Even though the plant flowers throughout the year, it never produces seeds, and hence genetic diversity is lacking in this taxon. From the previous analysis it was found that, gametophytic self-incompatibility is operating in this plant. In the present study, 14 accessions of H. patens were collected from different parts of Kerala and found that, accession No.3 has significant morphological differences compared to other accessions. Crossing between morphologically similar plants from various localities failed to set-seeds, whereas crosses between morphologically dissimilar plants always set-seeds. This species have both self-incompatible (on selfing) and compatible (crossing) populations, and are there for ideal for understanding how the mating system affect genetic diversity and structure. In the present study, morphologically different plant shows genetic variability which is confirmed by random amplified polymorphic DNA analysis.
Authors and Affiliations
FILMA LOUIS, RENJUMOL . R, P. M. RADHAMANY
Keywords
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- EP ID EP223373
- DOI 10.24247/ijbrjun20173
- Views 144
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