Evaluation of the U.S. peanut mini core collection using a molecular marker for resistance to <Emphasis Type="Italic">Sclerotinia minor</Emphasis> Jagger |
| |
Authors: | Kelly D Chenault Chamberlin Hassan A Melouk Mark E Payton |
| |
Institution: | (1) USDA-ARS, Wheat, Peanut and other Field Crops Research Unit, 1301 N. Western, Stillwater, OK 74075, USA;(2) Department of Statistics, Oklahoma State University, Stillwater, OK 74078, USA |
| |
Abstract: | Cultivated peanut, the second most economically important legume crop throughout the United States and the third most important
oilseed in the world, is consistently threatened by various diseases and pests. Sclerotinia minor Jagger (S. minor), the causal agent of Sclerotinia blight, is a major threat to peanut production in the Southwestern U.S., Virginia, and
North Carolina and can reduce yield by up to 50% in severely infested fields. Although host plant resistance would provide
the most effective solution to managing Sclerotinia blight, limited sources of resistance to the disease are available for
use in breeding programs. Peanut germplasm collections are available for exploration and identification of new sources of
resistance, but traditionally the process is lengthy, requiring years of field testing before those potential sources can
be identified. Molecular markers associated with phenotypic traits can speed up the screening of germplasm accessions, but
until recently none were available for Sclerotinia blight resistance in peanut. This study objective of this study was to
characterize the US peanut mini-core collection with regards to a recently discovered molecular marker associated with Sclerotinia
blight resistance. Ninety-six accessions from the collection were available and genotyped using the SSR marker and 39 total
accessions from spanish, valencia, runner market types were identified as new potential sources of resistance and targeted
for further evaluation in field tests for Sclerotinia blight resistance. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|