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- Title
Identification of quantitative trait loci associated with resistance to foliar diseases in sorghum [ Sorghum bicolor (L.) Moench].
- Authors
Murali Mohan, S.; Madhusudhana, R.; Mathur, K.; Chakravarthi, D. V. N.; Rathore, Sanjay; Nagaraja Reddy, R.; Satish, K.; Srinivas, G.; Sarada Mani, N.; Seetharama, N.
- Abstract
Forage sorghum cultivars grown in India are susceptible to various foliar diseases, of which anthracnose, rust, zonate leaf spot, drechslera leaf blight and target leaf spot cause severe damage. We report here the quantitative trait loci (QTLs) conferring resistance to these foliar diseases. QTL analysis was undertaken using 168 F recombinant inbred lines (RILs) of a cross between a female parental line 296B (resistant) and a germplasm accession IS18551 (susceptible). RILs and parents were evaluated in replicated field trials in two environments. A total of twelve QTLs for five foliar diseases on three sorghum linkage groups (SBI-03, SBI-04 and SBI-06) were detected, accounting for 6.9-44.9% phenotypic variance. The morphological marker Plant color ( Plcor) was associated with most of the QTL across years and locations. The QTL information generated in this study will aid in the transfer of foliar disease resistance into elite susceptible sorghum breeding lines through marker-assisted selection.
- Subjects
INDIA; SORGHUM; ANTHRACNOSE; FUNGAL diseases of plants; PLANT germplasm; FOLIAR diagnosis
- Publication
Euphytica, 2010, Vol 176, Issue 2, p199
- ISSN
0014-2336
- Publication type
Article
- DOI
10.1007/s10681-010-0224-x