Pandey A.,National Bureau of Plant Genetic Resources |
Pandey A.,ICAR Research Complex for NEH Region Umiam |
Bisht I.S.,National Bureau of Plant Genetic Resources |
Bhat K.V.,National Bureau of Plant Genetic Resources |
Mehta P.S.,NBPGR Regional Station Bhowali
Genetic Resources and Crop Evolution | Year: 2011
Role of informal seed system in landrace diversification, in situ conservation on-farm and sustainability in production were investigated as a case study for rice diversity in Indian Himalayas. The diachronic pattern of landrace occurrence revealed substantial increase, both in landrace number and frequency, in time. The local level seed supply in Uttarakhand Himalaya revealed that about 96% seed supply originated from informal system and a mere 4% seed supply is met from formal seed supply networks. In higher elevation ranges, beyond 1200 masl, largely landrace cultivation is practiced and a greater landrace diversification in traditional production was observed. Substantial variations due to environmental adaptations in niche habitats help provide important donor germplasm for crop improvement to users. Further, the population genetic structure also indicated enough diversity being maintained on-farm. Developing pathways for strengthening local level seed system for landrace diversification linked to sustainability in food production and conserving agro-biodiversity has been emphasized. © 2011 Springer Science+Business Media B.V.