ISHS Acta Horticulturae 208: VI International Symposium on Medicinal and Aromatic Plants, XXII IHC
STYLAR HETEROMORPHISM IN SOLANUM KHASIANUM CLARKE |
| Authors: | Y.S. Chauhan, N. Joshee |
| DOI: | 10.17660/ActaHortic.1987.208.22 |
| Abstract:
Solanum khasianum Cl. is an alkaloid (solasodine) yielding plant. The concentration of alkaloid is maximum in its berries. S. khasianum bears two types of flowers: long-style (berry forming, female fertile); and short-style (non-berry forming, female sterile). Optical and electron microscopic studies reveal structural variation in the stigma of long-style and short-style flowers. Unlike short-style stigma, the stigma of long-style has 2–3 celled papillae which open outside through an apical pore. The pollen tubes enter the stigma through the pore of the papillae. Histochemically, long-styles have more polysaccharides, nucleic acids, particularly RNA, and protein in comparison to short-style. The ovules in the short-style ovaries abort at an early stage of development and reveal arrested embryosacs. Compared to short-style flowers, long-style flowers have more protein but less peroxidase activity. Long-style and short-style flowers have different peroxidase isozyme banding pattern. Kinetin favours long-style development while GA promotes short-style development. | |
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