Mapping of quantitative trait loci for resistance to turcicum leaf blight in maize (Zea mays L.)

  • Dan Jakhar Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221 005 U.P. (India)
  • Rajesh Singh Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221 005 U.P. (India)
  • Pavan Devesh
  • Saket kumar 2Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi-221 005 U.P. (India)
  • Abhishek Singh Department of Agriculture, Quantum University, Roorkee-247 664 U.K. (India)
  • Ram Prakash Srivastava

Abstract

Turcicum Leaf Blight (TLB) is a common foliar disease of maize. The aim of this study was to find quantitative trait loci (QTL) for TLB resistance in maize. By crossing two inbred lines, CM 212 (susceptible) and CM 145 (resistant), a mapping population was developed, which was evaluated in two environments namely E1 (Varanasi, U.P., India; 250 N, 830 E) and E2 (Nagenahalli, Karnataka, India; 120 N, 760 E). Data on four disease severity traits viz., Percent Disease Index (PDI), Area Under Disease Progress Curve based on PDI (AUDPC-PDI), Lesion Area (LA), and Area Under Disease Progress Curve based on LA (AUDPC-LA) were generated for locating QTLs. Fifteen QTL intervals for resistance to TLB were located on chromosomes 1, 2, 4, 5, 6 and 9. Out of these fifteen QTLs, two QTLs were reported for trait PDI on chromosomes 1 and 5 for TLB resistance at E1; seven QTLs were identified at E2, where two QTLs were reported for PDI on chromosome 4, four QTLs for trait area under disease progress curve based on PDI and one QTL was reported for trait lesion area. Additionally, identified at pooled environment, six QTLs exhibited the LOD values in the range of 2.64 and 7.77, and corresponding R2 in the range of 10.80 and 17.74 in the individual environments and across the environments

Author Biographies

Rajesh Singh, Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221 005 U.P. (India)

Department of Genetics and Plant Breeding, Institute of Agricultural Sciences,

Banaras Hindu University, Varanasi-221 005 U.P. (India)

Pavan Devesh

Department of Genetics and Plant Breeding, Institute of Agricultural Sciences,

Banaras Hindu University, Varanasi-221 005 U.P. (India)

Saket kumar, 2Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi-221 005 U.P. (India)

Institute of Environment and Sustainable Development, Banaras Hindu University,

Varanasi-221 005 U.P. (India)

Abhishek Singh, Department of Agriculture, Quantum University, Roorkee-247 664 U.K. (India)

Department of Agriculture, Quantum University, Roorkee-247 664 U.K. (India)

 

Ram Prakash Srivastava

Department of Agriculture, Quantum University, Roorkee-247 664 U.K. (India)

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How to Cite
Jakhar, D., R. Singh, P. Devesh, S. kumar, A. Singh, and R. Prakash Srivastava. “Mapping of Quantitative Trait Loci for Resistance to Turcicum Leaf Blight in Maize (Zea Mays L.)”. Emirates Journal of Food and Agriculture, Vol. 34, no. 4, Apr. 2022, doi:https://doi.org/10.9755/ejfa.2022.v34.i4.2832. Accessed 18 Aug. 2022.
Section
Research Article