02934nam a2200181Ia 4500 26788 26788 OSt 20220829151838.0 140128s9999 xx 000 0 und d 635 ANN/EV Ann Samuel . Evaluation Of Genetic Stock Of Mucuna Pruriens Baker non DC. For Yield ,L-DOPA Content And Nitrogen Fixing Potential In Coconut Garden Vellayani Department of Horticulture, College of Agriculture 2000 MSc The present study titled "Evaluation of genetic stock of Mucuna pruriens Baker non DC. for yield, L-DOPA content and nitrogen fixing potential in coconut garden" was carried out at the Department of Plantation Crops and Spices, College of Agriculture, Vellayani from May 1999 to January 2000. Seeds of twenty five different accessions were collected from inside and outside the state. They were subjected to seed characterization and seed germination studies. Based on the germination rate, ten accessrons with high germination percentage were selected. These were raised under coconut shade. Various biometric observations were taken at four different stages, viz., pre-flowering, flowering, seeding and seed maturation state. These observations included biomass yield, root yield and seed yield. Phytochemical analysis was carried after crop harvest to estimate the quantity of L-DOPA present in the seeds of each accession. Soil tests were carried out to determine the amount of nitrogen fixed in the soil by the accessions. 2 After analysis of the results it was evident that the accessions MP-62, MP-57, MP-44, MP-58, MP-46 and MP-45 had superior biomass yields compared to the others. The accessions showing superior seed yield were MP-60, MP-62, MP-58, MP-67, MP-57 and MP-66. The content of soil nitrogen fixed varied significantly among the plots of individual accessions. The accessions MP-62, MP-57, MP-67, MP-44, MP-58 and MP-60 were observed to have fixed higher amounts of nitrogen. After phytochemical tests, the accessions with significantly superior L-DOPA content (ie., greater than two per cent) were MP-60, MP-57, MP-46 and MP-66. From the study conducted, the most promising accessions, ie., those having superior biomass, root and seed yield, as well as superior L-DOPA content and nitrogen-fixation potential could be identified. They are MP-62, MP-60, MP-58, MP-57, MP-44 and MP-67. It can be reiterated that growing such accessions of this plant . species would be of much benefit to the cultivator enabling him to utilize existing areas under cultivation, enrich its soil fertility status as well as provide him with an additional source of income by way of selling seeds; the medicinally valuable plant part. Reghunath B R (Guide) http://krishikosh.egranth.ac.in/handle/1/5810105493 ddc TH 0 0 ddc 0 0 KAUCLV KAUCLV THESES 2014-03-18 0 635 ANN/EV 171847 2014-03-18 00:00:00 2014-03-18 TH