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Himachal Pradesh University (2012)

Seed physiological studies on some medicinal plant species of Kinnaur _Himachal Pradesh_

Kumar, Vinay

Titre : Seed physiological studies on some medicinal plant species of Kinnaur _Himachal Pradesh_

Auteur : Kumar, Vinay

Université de soutenance : Himachal Pradesh University

Grade : Doctor of Philosophy (PhD) in Botany 2012

Objectifs
The present study aimed at characterizing the ecophysiological and metabolic aspects of seeds of some medicinal plants species namely, Aconitum heterophyllum, Angelica glauca, Dioscorea deltoidea, Podophyllum hexandrum and Polygonatum verticillatum from Kinnaur (Himachal Pradesh). The lUCN status of above five plant species are critically endangered, endangered, endangered, endangered and vulnerable, respectively. Specific objectives were : (i) To collect the seeds of above stated medicinal plant species from suitable location(s) in Kinnaur region (H.P.) (ii) To assess the level of seed viability and germination/dormancy at harvest and to determine the efficacy of different physico-chemical and hormonal treatments for removal of seed dormancy and improvement of seed germination and seedling growth performance (iii) To monitor the storage-dependent changes in the status of seed viability and dormancy/germination and those in response of seeds to applied physico- chemical and hormonal treatments (iv) To understand the physiological/metabolic mechanisms underlying the maintenance/removal of seed dormancy and storage dependent changes in viability/dormancy levels with regard to (a) detection of chemical inhibitors in dormant seeds and (b) determination of changes in hydrolytic (a-amylase), dehydrogenase and antioxidative enzymes (catalase, ascorbate peroxidase and superoxide dismutase)

Mots clés : Aconitum heterophyllum, Angelica glauca, Dioscorea deltoidea, Podophyllum hexandrum

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Page publiée le 25 février 2021