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Abstract

Aristolochia bracteolata Lamk. is partially Protogynous. The flower exibits fly-trapping mechanism. Only one pollinator, belonging to the genus Forcipomya (Diptera; Ceratopogonidae) is involved. The pollen germination takes place within the dehisced anthers and on perianth parts i.e., within the- trap and the prison, producing the pollen tubes, which ultimately reach the stigma and bring about fertilization. Breeding system study revealed that Aristolochia is self-compatible. Significant difference between treatments (bagged and open - pollinated flowers) in terms of fruit set, fruit and seed weight was observed. In all the 3 populations studied, difference in seed set and seed weight was significant while non-significant in fruit set and fruit weight.

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