Environment effects for earliness and grain yield traits in F1 diallel populations of maize (Zea mays L.)

• Published in: Journal of the science of food and agriculture Vol. 97; no. 13; pp. 4408 - 4418
• Main Authors: Ali, Sardar, Khan, Naqib Ullah, Khalil, Iftikhar Hussain, Iqbal, Muhammad, Gul, Samrin, Ahmed, Sheraz, Ali, Naushad, Sajjad, Mohammad, Afridi, Khilwat, Ali, Imtiaz, Khan, Shah Masaud
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.10.2017; John Wiley and Sons, Limited
• Subjects: Corn; Crop yield; earliness and yield traits; Environmental effects; Environments; Genotype & phenotype; genotype by environment interaction; Genotype-environment interactions; Genotypes; Grain; Hybrids; Inbreeding; total sum of squares; white kernel maize F1 diallel hybrids; Zea mays; Zea mays L
• ISSN: 0022-5142; 1097-0010
• DOI: 10.1002/jsfa.8420

BACKGROUND Five maize inbred lines, 20 F1 diallel hybrids and two check genotypes were evaluated through genotype × environment interaction (GEI) and GGE biplot for earliness and yield traits at four locations. RESULTS Genotype, environment and GEI showed highly significant differences for all the traits. In total sum of squares, environment and genotype played a primary role, followed by GEI. Larger effects of environment and genotype to total variation influence the earliness and yield traits. However, according to the GGE biplot, the first two principal components (PC1 and PC2) explained 95% of the variation caused by GEI. GGE biplot confirmed the differential response of genotypes across environments. F1 hybrid SWAJK‐1 × FRHW‐3 had better stability, with a good yield, and was considered an ideal genotype. F1 hybrid FRHW‐2 × FRHW‐1 showed more earliness at CCRI and Haripur, followed by PSEV3 × FRHW‐2 and its reciprocal at Swat and Mansehra, respectively. F1 hybrids FRHW‐1 × SWAJK‐1, PSEV3 × SWAJK‐1 and SWAJK‐1 × FRHW‐3 at Mansehra and Swat produced maximum grain yield, followed by SWAJK‐1 × FRHW‐1 and PSEV3 × FRHW‐1 at Haripur and CCRI, respectively. CONCLUSION Overall, maize genotypes showed early maturity in plain areas (CCRI and Haripur) but higher yield in hilly areas (Mansehra and Swat). © 2017 Society of Chemical Industry