OAR@ICRISATSSR markers associated with resistance to rust (Puccinia arachidis Speg.) in groundnut (Arachis hypogaea L.)T S NVarmaauthorS LDwivediauthorSPandeauthorM V CGowdaauthorRust (Puccinia arachidis Speg.) is one of the important foliar diseases that causes substantial losses to groundnut (Arachis hypogaea L.) production and reduces seed quality. Resistance to rust is associated with many undesirable pod and seed characteristics. It is reported to be controlled either by few recessive genes or is inherited as a quantitative trait. DNA marker technology is used to minimize linkage drag and hasten the development of new resistant varieties. This experiment was initiated to study molecular variation among parents and identify SSR markers associated with rust resistance in groundnut. The parents and F2 populations of the two crosses were evaluated for resistance to rust under greenhouse conditions. None of the SSR primer pairs showed intra-accession variability among parents. Seven and eight primer pairs detected polymorphic variation between ICGV 99003 and TMV 2, and ICGV 99005 and TMV 2, respectively. They either belonged to 'ATT' or 'AG' SSR repeat families. Wilcoxon test was used to test the significance of association between marker and rust disease score. Rust resistance was associated with two SSR alleles (pPGPseq3A1271 and pPGPseq3A1390) in ICGV 99003 × TMV 2 and seven SSR alleles (pPGPseq5D5270, pPGPseq5D5295, pPGPseq5D5325, pPGPseq16F1315, pPGPseq16F1424, pPGPseq7F6128, and pPGPseq13A7292) in ICGV 99005 × TMV 2. SSR markers associated with rust resistance should facilitate the rapid identification and transfer of chromosomal region(s) into elite breeding lines by using marker-assisted backcross breeding in groundnut.Groundnut2005Article

For work being deposited by its own author: In self-archiving this collection of files and associated bibliographic metadata, I grant OAR@ICRISAT the right to store them and to make them permanently available publicly for free on-line. I declare that this material is my own intellectual property and I understand that OAR@ICRISAT does not assume any responsibility if there is any breach of copyright in distributing these files or metadata. (All authors are urged to prominently assert their copyright on the title page of their work.)

For work being deposited by someone other than its author: I hereby declare that the collection of files and associated bibliographic metadata that I am archiving at OAR@ICRISAT) is in the public domain. If this is not the case, I accept full responsibility for any breach of copyright that distributing these files or metadata may entail.

Clicking on the deposit button indicates your agreement to these terms.