Genetic Analysis of Maternal Haploid Inducibility for In Vivo Haploid Induction in Maize

Doubled haploid (DH) technology based on in vivo induction has gradually become the key modern maize breeding. The ability of maternal germplasm to be induced into haploids, inducibility, varies among genotypes. To dissect genetic basis inducibility (MHI), an F2 population derived from inbred lines B73 and Zheng58 was used for single environment QTL analysis by interaction analysis. mapping genotyped 48K liquid-phase hybridization probe capture technique phenotyped multi-environment trials MHI. A total ten QTLs located chromosome bins 4.05, 4.09, 5.05/5.06, 6.07, 7.00, 7.01, 7.02, 7.03, 9.02, 10.06 were identified PVE value each ranged 4.79% 10.01%. qMHI5 is a stable JSH, HN, across environments with highest Three QTLs, qMHI4-1, qMHI5, qMHI 9-1, detected both methods. genes, Zm00001d017366, Zm00001d017420, Zm00001d017432, involved seed development most likely candidate genes. This study provides valuable information