Mapping QTLs for popping ability in a popcorn x flint corn cross

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
R BabuH S Gupta

Abstract

Popping expansion volume (PEV) in popcorn (Zea mays L.) is a distinct heritable character and defined as the ratio of the volume after popping to the volume before popping. PEV is quantitatively inherited and 3-4 genes/quantitative trait loci (QTLs) have been implicated. In the present study, we have dissected the quantitative PEV into two component traits, viz., flake volume (FV) and percent unpopped kernels (UPK), and mapped QTLs using SSR markers for all three traits with 194 F3 families derived from a popcorn (A-1-6) x flint corn (V273) cross. Heritability (broad sense) estimates for PEV, FV and UPK based on F3 mean bases were 0.72, 0.54 and 0.68, respectively. The QTL analyses for the three traits based on combined environment data were performed by composite interval mapping using QTL cartographer. Four QTLs were identified for PEV on chromosomes 1, 3, 8 and 10, which together explained 62% of the phenotypic variance (sigma2p). Four QTLs were found on chromosomes 1, 5, 9 and 10 for FV (explaining 44% of sigma2p) and five QTLs for UPK on chromosomes 1, 3, 4, 5 and 9 (explaining 57% of sigma2p). The relative efficiency estimates of marker-based selection in comparison to phenotypic selection for PEV (1.10), FV (1.22) and UP...Continue Reading

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Citations

Jun 5, 2007·Genome Génome / Conseil National De Recherches Canada·Yuling LiDangqun Cui
May 1, 2016·The Journal of Heredity·Akio MoriDavid W Severson
Jan 23, 2019·The Journal of Heredity·Paul V HicknerDavid W Severson
Aug 7, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Brigitte GouesnardStéphane Nicolas
Apr 13, 2021·Frontiers in Plant Science·Leandra ParsonsDavid R Holding
Aug 20, 2021·PloS One·Sukhdeep KaurRanjeet Ranjan Kumar

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