Germplasm assesment of some rare and threatened medicinal plants of Kashmir Himalayas.

The present work embodies a detailed investigation of the population structure, reproductive biology, karyology and pollen mother cell meiosis of three rare and threatened medicinal plants of Kashmir Himalayas namely: Podophyllum hexandrum, aconitum heterophyllum and sanssurea lappa. The following aspects are worked out during the study. 1. Distribution aspect. 2. Morphology and phenotypic variability aspect. 3. Flowering phenology aspect. 4. Breeding system to cover the following aspects a) Pollen emission and stigma Receptivity. b) Pollen viability and pollen ovule ratio. c)Pollination Systems. d) Breeding behavior and e) Modes of propagation. 5. Reproductive effort and resource partitioning in sex organs. 6. Karyology and pollen mother cell meiosis