V. & M. H. Ramanatha Rao's Conservation and utilization of sweet potato genetic PDF

By V. & M. H. Ramanatha Rao

ISBN-10: 9290434678

ISBN-13: 9789290434672

Those lawsuits were compiled and edited in line with the papers presentedat this workshop, facing ambitions as set through resolution participants. They comprise the data at the growth made throughout the 3 years because the contributors met final time, yet extra importantly they checklist the commitments made through diversified companions for furthering sweetpotato genetic assets paintings in Asia. additionally they include the tips about thoughts and methods proposed on the workshop, so one can shape the root for destiny paintings of solution. it truly is my wish that the e-book and distribution of this quantity will stimulate additional the already lively job in sweetpotato genetic assets conservation and use within the quarter.

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Sample text

Similar data on accessions in Anggi site were also transferred to RSRC from CIP. Characterization database obtained from CIP also contains images of leaves and roots. A total of 1005 accessions have characterization data, and 527 accessions have passport data (at least the name of the district where the accessions were collected). Other 174 accessions can only be identified as highland accessions, and the remaining had no passport data. This is especially so with the accessions given by individuals to the RSRC.

These clones become important materials for the breeding programmes. Many of the Irian accessions did not produce storage roots when first planted at Lembang after their collection and more accessions started to produce storage roots after 2 to 4 clonal generation. Accessions from Irian Jaya, generally lacked orange flesh colour (Table 2d), there was a tendency that these accessions were also lacked pigmentation on abaxial vein or main vein (Mok 1996). Resistance to leaf scab Field resistance to scab was assessed by scoring the symptoms on a scale from 0 (no symptom) to 4 (severe infection).

In PRCRTC, the reduction of number from 1402 to 931 is attributed to severe environmental stresses, like long dry periods, heavy rains, pests and diseases. Losses were observed in the field genebank through continuous replanting. In NPRCRTC of Benguet, the reduction of number was due to the elimination of duplicates by the curator based on CIP/IPGRI descriptors list. It was found that the majority of the accessions were duplicates. In IPB and UPLB, no figure for recent sweetpotato accession was provided.

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Conservation and utilization of sweet potato genetic diversity in Asia by V. & M. H. Ramanatha Rao


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