Evaluation of quality protein maize inbred lines for resistance to Turcicum leaf blight and grey leaf spot disease under field condition at mid altitude sub-humid agro-ecology of Ethiopia
Journal Title: Scientific Journal of Crop Science - Year 2016, Vol 5, Issue 11
Abstract
Grey Leaf Spot and Turcicum Leaf Blight, severe foliar diseases of maize caused by the fungi Cercospora zeamaydis and Exserohilum turcicum, are characterized by relatively rapid leaf necrosis and premature death of foliage which reduces grain yield of maize crop in Ethiopia, the diseases become a major problem in all major maize growing areas. The study was carried out with the objective to evaluate and identify resistant/tolerant quality protein maize inbred lines to turcicum leaf blight and grey leaf spot diseases. A total of 25 QPM inbred lines were evaluate and necessary data on incidence, disease severity, AUDPC, plant height and grain yield were recorded. Result of combined analysis variance showed significant (p<0.05) difference of year x inbred lines interaction for TLB and GLS severity. The performances of the inbred lines were not consistent across years as evident from the significant year x genotypes interactions. Out of twenty five quality protein inbred lines, four of them showed resistant to turcicum leaf blight and three inbred lines resistance to grey leaf spot disease. The majority of quality protein inbred lines were showed moderate resistant to both diseases. Some quality protein maize inbred lines resistance to both diseases, indicating that it can carry genes for multiple traits. However, further study required through fine mapping and identification of co-located QTLs. Overall, the identified resistance inbred lines can be utilized in future maize breeding program like for possible use of introgression into cultivars, as source of donor and varietal resistance development.
Authors and Affiliations
Belay Garoma*| Bako National Maize Research Centre; Ethiopian Institute of Agricultural Research (EIAR), P.O. Box 03, Bako, Ethiopia., Bitew Tilahun| Bako National Maize Research Centre; Ethiopian Institute of Agricultural Research (EIAR), P.O. Box 03, Bako, Ethiopia., Midekssa Dida| Bako National Maize Research Centre; Ethiopian Institute of Agricultural Research (EIAR), P.O. Box 03, Bako, Ethiopia., Temesgen Deresa| Bako National Maize Research Centre; Ethiopian Institute of Agricultural Research (EIAR), P.O. Box 03, Bako, Ethiopia., Girma Demissie| Bako National Maize Research Centre; Ethiopian Institute of Agricultural Research (EIAR), P.O. Box 03, Bako, Ethiopia., Adefris T/wold| International Maize and Wheat Improvement Centre (CIMMYT), Addis Ababa, Ethiopia., Dagne Wegary| International Maize and Wheat Improvement Centre (CIMMYT), Addis Ababa, Ethiopia.
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- EP ID EP1050
- DOI 10.14196/sjcs.v5i11.2252
- Views 676
- Downloads 25
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Evaluation of quality protein maize inbred lines for resistance to Turcicum leaf blight and grey leaf spot disease under field condition at mid altitude sub-humid agro-ecology of Ethiopia
Grey Leaf Spot and Turcicum Leaf Blight, severe foliar diseases of maize caused by the fungi Cercospora zeamaydis and Exserohilum turcicum, are characterized by relatively rapid leaf necrosis and premature death of folia...