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Quantitative trait loci mapping for resistance to maize streak virus in F2:3 population of tropical maize

Garcia-Oliveira, A. L. and Menkir, A. and Kumar, P. Lava and Azuh, V. and Jacob, O. O. and Gedil, M. (2020) Quantitative trait loci mapping for resistance to maize streak virus in F2:3 population of tropical maize. CEREAL RESEARCH COMMUNICATIONS, 48 (2). pp. 195-202. ISSN 0133-3720 (print), 1788-9170 (online)

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Abstract

Maize streak virus (MSV) continues to be a major biotic constraint for maize production throughout Africa. Concerning the quantitative nature of inheritance of resistance to MSV disease (MSVD), we sought to identify new loci for MSV resistance in maize using F2:3 population. The mapping population was artifcially inoculated with viruliferous leafhoppers under screenhouse and evaluated for MSVD resistance. Using 948 DArT markers, we identifed 18 quantitative trait loci (QTLs) associated with diferent components of MSVD resistance accounting for 3.1–21.4% of the phenotypic variance, suggesting that a total of eleven genomic regions covering chromosomes 1, 2, 3, 4, 5 and 7 are probably required for MSVD resistance. Two new genomic regions on chromosome 4 revealed the occurrence of co-localized QTLs for diferent parameters associated with MSVD resistance. Moreover, the consistent appearance of QTL on chromosome 7 for MSVD resistance is illustrating the need for fne-mapping of this locus. In conclusion, these QTLs could provide additional source for breeders to develop MSV resistance.

Item Type: Article
Additional Information: MTA KFB támogatási szerződés alapján archiválva
Uncontrolled Keywords: Maize, Maize streak virus, QTL, sub Saharan Africa, Disease resistance
Subjects: Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3015 Molecular biology / molekuláris biológia
Q Science / természettudomány > QH Natural history / természetrajz > QH426 Genetics / genetika, örökléstan
S Agriculture / mezőgazdaság > S1 Agriculture (General) / mezőgazdaság általában
S Agriculture / mezőgazdaság > SB Plant culture / növénytermesztés > SB975 Plant protection / növényvédelem
Depositing User: Katalin Andódy
Date Deposited: 21 Feb 2023 10:57
Last Modified: 21 Feb 2023 10:57
URI: http://real.mtak.hu/id/eprint/159584

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