Storage-dependent Detection of Germination Inhibitors in Seeds of Aconitum heterophyllum Wall ex Royle from Kinnaur (Himahcal Pradesh)
Journal Title: Journal of Biological and chemical Chronicles - Year 2018, Vol 4, Issue 2
Abstract
Remarkably, the dormancy status could vary even within a species, depending upon the factors such as differences between individuals, location, climatic conditions as well as nature and duration of seed storage after collection. Apparently, seed dormancy is of immense significance in ensuring the survival of plant species during adverse conditions. However, it hampers the seed germination that turns out to be a disadvantage for the seed based propagation/cultivation of plant species. The full realization of the potential of seeds in achieving plant regeneration/cultivation of a plant species depends to a great extent on the understanding of the basic mechanism(s) of dormancy. In the present study, the presence of germination/chemical inhibitors in the dormant seeds of important plant species namely, Aconitum heterophyllum from Kinnaur (Himachal Pradesh) has been determined by monitoring the effect of leachate and extract of dormant seeds on germination of seeds of a phytometer species namely, Brassica juncea. Due to the treatment with the seed leachate of freshly harvested, 1, 2 and 3 year stored seeds of A. heterophyllum, a 45, 36, 25 and 23% inhibition of B. juncea seed germination was evident. Similar observations were obtained with seed extract with some quantitative differences. The findings reveal the presence of chemical inhibitors involved in seed dormancy regulation of concerned plant species. Remarkably, there appeared a loss of inhibitors with storage of seeds as revealed by the reduction in the degree of inhibition of B. juncea seeds.
Authors and Affiliations
Vinay Kumar
Keywords
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