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Field collections of herbal weed plants were conducted and studied. The research study aimed to determine the economic values of some herbal weed plants in Barpeta district used by Assamese communities in traditional purpose. Specifically it aimed to describe the economic value with respect to their use as vegetables and other medicinal benefits. Results of the study revealed 30 species in 22 families of herbal weeds which were collected in the study sites. The herbal weed plants exhibited morphologically were different from each other and were found economically important because of their medicinal values. The traditional knowledge of these weed plants as leafy vegetables and medicine recorded in this paper are hitherto unknown or less known to the world.
Seed protein profile and esterase isoenzme were studied in ten accessions of lemongrass [Cymbopogon flexuosus] collected from northeastern India belonging to two major chemotypes – citral and geraniol rich essential oil. Total four esterase isozyme bands were ob55 Vol. 57 No. 3 2011 Seed protein and esterase isozyme profile among the accession of lemongrass served with Rm values in the range of 0.394 to 0.798. Among them one with Rm value 0.747 was unique as it was consistently present in all the accessions irrespective of citral or geraniol rich chemotype. For seed protein, SDS-PAGE analysis of seven accessions (RLJ-TC-1, RLJ-TC-4, RLJ-TC-5, RLJ-TC-8, RLJ-TC-9, RLJ-TC-10 and OD-19) revealed a total of 13 bands among the accessions ranging in the size from 21.5 to 92.0 kd. Six citral rich accessions exhibits very similar seed protein profile with 10 to 11 protein band each. However, the geraniol rich chemo-type RLJ-TC-8 exhibit different profile with only six high molecular proteins. Four seed proteins with molecular weight 92.0, 86.0, 80.4 and 61.6 kd were consistently found in all the chemotypes irrespective of citral or geraniol rich and can be considered as marker for the species. Although esterase isozymes exhibited low polymorphism, yet close similarity of isozyme and seed protein profile can be considered as evidence of genetic homogeneity among the accession of lemongrass.
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