The contribution of the International Rice Genebank to varietal improvement and crop productivity in Eastern India

Vista sencilla de ítem
dc.creatorVillanueva, Donald
dc.creatorSmale, Melinda
dc.creatorJamora, Nelissa
dc.creatorCapilit, Grace Lee
dc.creatorHamilton, Ruaraidh Sackville
dc.date2020-10
dc.date2024-12-19T12:53:58Z
dc.date2024-12-19T12:53:58Z
dc.date.accessioned2026-06-27T04:13:19Z
dc.descriptionUsing survey dataset collected from nearly 9000 farmers along with pedigree and evaluation data, this study measures the contribution of the International Rice Genebank (IRG) to varietal improvement and rice productivity of farmers in Eastern India. We empirically test the relationship of ancestry to productivity changes while controlling for the effects of other farm inputs and environmental factors. Estimated coefficients indicate that a 10% increase in the genetic contribution of IRG accessions to an improved rice variety is associated with a yield increase of 27%. Through pedigree analysis, we also confirm that 45 to 77% of the genetic composition of improved rice varieties is derived from the genes of IRG accessions. Peta, Dee Geo Woo Gen, and Fortuna are the three most popular progenitors with definite IRG contribution. High genealogical diversity likely results from the crossing of germplasm received from multiple countries of origin, which also confer multiple, functional trait combinations in a released variety. Further, our calculations reveal that the average coefficient of parentage of all pairwise combinations among the 10 most adopted rice varieties is 0.0973, indicating a high degree of latent genetic diversity. Findings demonstrate the valuable contribution of the genetic resources conserved and distributed by IRG to the development of improved rice varieties.
dc.identifierhttps://hdl.handle.net/10568/164495
dc.identifier.urihttp://hdl.handle.net/123456789/25586
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceVillanueva, Donald; Smale, Melinda; Jamora, Nelissa; Capilit, Grace Lee and Hamilton, Ruaraidh Sackville. 2020. The contribution of the International Rice Genebank to varietal improvement and crop productivity in Eastern India. Food Sec., Volume 12 no. 5 p. 929-943
dc.subjectagronomy
dc.subjectcrop science development
dc.subjectfood science
dc.titleThe contribution of the International Rice Genebank to varietal improvement and crop productivity in Eastern India
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional de Investigación del Arroz (IRRI)