Genotype × environment interaction of quality protein maize grain yield in Nepal

Abstract

In order to determine G × E interaction of quality protein maize grain yield, six maize genotypes were evaluated under different environments of three Terai (Chitwan, Surkhet and Doti) and four mid hill (Dhankuta, Lalitpur, Dolakha and Kaski) districts of Nepal during summer seasons of 2014 and 2015. The experiments were conducted using randomized complete block design along with three replications. The genotypes namely S99TLYQ-B, S99TLYQ-HG-AB and S03TLYQ-AB-01 were identified high yielding and better adapted genotypes for Terai environments with grain yield of 4199 kg ha -1 , 3715 kg ha -1 , and 3336 kg ha -1 respectively and S99TLYQ-B and S03TLYQ-AB-01 for mid hill environments with grain yield of 4547 kg ha -1 and 4365 kg ha -1 respectively. Therefore, these genotypes can be suggested for cultivation in their respective environments in the country.

Bio-fortified maize: Cornerstone in plant breeding to combat hidden hunger in developing countries

“…Different breeding strategies including diversity analysis, introduction and stability analysis of exotic germplasm, hybridization, heterosis breeding, mutagenesis and markerassisted selection are practiced for exploring maize germplasm and development of pro-vitamin A enriched cultivars (Maqbool et al, 2018). Genome-wide association variety and development of transgenic maize genotypes are also being practiced, whereas RNA interference and genome editing tools could also be used as potential strategies for provitamin A biofortification of maize genotypes (Shrestha et al, 2016). The use of these breeding strategies for provitamin A biofortification of maize is comprehensively reviewed to provide a working outline for maize breeders (Maqbool et al, 2018) The biofortified maize varieties were better sources of most of the essential amino acids comparative to the white variety, but, similar to the white maize, they were deficient in histidine and lysine (Kirthee et al, 2013).…”