Identification of genomic regions associated with shoot fly resistance in maize and their syntenic relationships in the sorghum genome

• DOI: 10.1371/journal.pone.0234335
• Publication Date: 2020-06-09T17:48:55Z
• Authors: Yogesh Vikal; Arshpreet Kaur; Jawala Jindal; Kirandeep Kaur; Dharminder Pathak; Tosh Garg; Ashanpreet Singh; Princepal Singh; Inderjit Yadav
• Keywords: 2. Zero hunger; 0106 biological sciences; Insecta; Genotype; Science; Q; Quantitative Trait Loci; R; Chromosome Mapping; India; Genomics; Zea mays; 01 natural sciences; Phenotype; Medicine; Animals; Edible Grain; Pest Control, Biological; Sorghum; Research Article; Disease Resistance; Microsatellite Repeats; Plant Diseases

Shoot fly (Atherigona naqvii) is one of the major insects affecting spring maize in North India and can cause yield loss up to 60 per cent. The genetics insect resistance complex as influenced by genotypic background, population climatic conditions. Therefore, quantitative trait loci (QTL) mapping a highly effective approach for studying genetically forms resistance. objective present study was dissect genetic basis identification genomic regions associated with shoot A total 107 F2 derived from cross CM143 (resistant) x CM144 (susceptible) genotyped 120 SSR markers. Phenotypic data were recorded on replicated F2:3 progenies various component traits imparting at different time intervals. Resistance observed be under polygenic control evidenced 19 putative QTLs governed overdominance partial dominance additive gene actions. conditioning viz., qDH9.1 (deadheart) qEC9.1 (oviposition) explaining 15.03 18.89 cent phenotypic variance, respectively colocalized chromosome 9. These are syntenic 10 sorghum which also accounted deadheart oviposition suggesting that same block may responsible candidate genes such cysteine protease, subtilisin-chymotrypsin inhibitor, cytochrome P450 involved synthesis alleochemicals, receptor kinases, glossy15 ubiquitin-proteasome degradation pathway identified within predicted QTL regions. This first reported conferring maize, markers here will valuable resource developing elite cultivars fly.