TITLE:
Genetic Variability and Character Association of Yield Components in Maize (Zea mays L.)
AUTHORS:
Sumayea Khan, Firoz Mahmud
KEYWORDS:
Component, Formatting, Style, Styling
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.12 No.11,
November
25,
2021
ABSTRACT: The research investigation was carried out in the
experimental area of Sher-e-Bangla Agricultural University, Sher-e-Bangla
Nagar, Dhaka-1207, during the late Rabi season Mid December to May 2018 to
study the genetic variability and character association of yield components in
Maize with 35 maize genotypes as experimental materials that were laid out in
Randomized Complete Block Design (RCBD) with three replications. The research
work was oriented to calculate and estimate the yield factor through analyzing
the mean performances, variability, heritability, genetic advance, correlation
coefficient and path analysis involving the yield contributing characters. The
maximum yield per plant (117.51 g) was estimated in the genotype G12 (Pacific)
and the minimum yield per plant (51.89 g) was recorded in the genotype G17
(Dekalb Super). The phenotypic coefficient of variation was observed higher
than the genotypic coefficient of variation for all yield contributing
characters. Heritability was also shown higher compared to genetic advance in
comparative mean study for all the characters involved. Significant and
positive correlation was observed for grain yield per plant with plant height
(0.774), cob length (0.956), grain per row (0.703) and 100-seed weight (0.365).
In path analysis study, positive direct correlation was recorded in days to
male flowering (0.247), cob breadth (1.078), number of grains per cob (6.874)
and 100-seed weight (0.595).