Preserving genetic resources

Eberhart, S A and Bramel-Cox, P J and Prasada Rao, K E (1996) Preserving genetic resources. In: Proceedings of the International Conference on Genetic Improvement of Sorghum and Pearl Millet..

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The mission of the U.S. National Plant Germplasm System (NPGS) is to effectively collect, document, preserve, evaluate, enhance, and distribute plant genetic resources for continued improvement in the quality and production of economic crops important to U.S. and world agriculture. Plant genetic resources in the NPGS are made freely available to all bona fide users fo r the benefit of humankind. The active collection is maintained and distributed by 19 national repositories, and the base collection is preserved at the National Seed Storage Laboratory (NSSL), U.S. Department o f Agriculture, Fort Collins, Colorado. The NPGS collections include 40,477 sorghum and 1,507pearl millet accessions. Of the 20,169 sorghum accessions in the base collection at NSSL, 80% are in conventional storage at about -18°C and 20% are in cryostorage in vapor phase above liquid nitrogen at about -16(fC; the pearl millet collection is in conventional storage. The International Crops Research Institute for the Semi-Arid Tropics (ICR1SAT) located at Patancheru, near Hyderabad, India, has assembled a collection o f35,643 sorghum and 21,195 pearl millet accessions, both ICRISAT mandate crops. All these accessions are maintained andpreserved in aluminum cans in the medium-term storage facility at about 4°C and 20% relative humidity. Freshly rejuvenated accessions with at least 90% viability and about 5% seed moisture content are being placed in moisture proof aluminum foil packets that are vacuum sealed and stored in long-term storage at -20°C. For these crops, 17% o f the sorghum collection and 23% o f the pearl millet collection have been transferred to long-term storage.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Plant Germplasm System, Plant genetic resources, Sorghum, Pearl Millet, US National Plant Germplasm System, ICRISAT, Germplasm Collection
Subjects: Mandate crops > Millets
Mandate crops > Millets > Pearl Millet
Mandate crops > Sorghum
Others > Genetics and Genomics
Others > Germplasm
Depositing User: Mr Ramesh K
Date Deposited: 02 Jun 2017 04:59
Last Modified: 02 Jun 2017 04:59
Acknowledgement: UNSPECIFIED
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