January 2021 Vol. 9 No.1
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Merit Research Journal of Agricultural Science and Soil
Science (ISSN: 2350-2274) Vol. 9(1) pp. 001-006,
Copyright © 2020 Author(s) retain the copyright of this
Agronomic Performance, Genetic Variability and
Heritability of Yield and its Attributing Characters in Maize (Zea
mays L.) Hybrids Grown in Northern Sudan
Merowe Research Station, Agricultural Research Corporation, P.
O. Box 126 Wad Medani, Sudan
Received: 27 December 2020
27 January 2021
30 January 2021
Article ID: MRJASSS-20-041
Copyright © 2021 Author(s) retain the
copyright of this article.
This article is published under the terms of the
Creative Commons Attribution
Two introduced Egyptian maize hybrids from Misr HyTtech Co.
(HyTech2066-Yellow and HyTech1100-White) were tested against two
standard checks (Pan6966 and Hudieba2) in Merowe Research
Station Farm for two consecutive winter seasons (2012/13 and
2013/14) to estimate the genetic variability, broad sense
heritability, genetic advance and correlation coefficient
analysis. The genotypes were arranged in RCB Design with 3
replicates. Grain yield, yield components and related traits
were studied. The maize hybrids showed significant differences
for all the parameters studied except the 100 – grain weight.
The results obtained indicated that the yellow maize hybrid
HyTech2066 gave significantly out - yielded than the two
standard checks in grain yield with average yield advantage over
Hudieba2 and Pan6966 amounting to 22.6% and 24.1% respectively.
HyTech2066 was significantly earlier than the check Pan6966. The
genetic advance as percent of mean was high for plant height
(16.77%), cob length (16.43%), days to 50% tasseling (6.21%),
number of plants per plot (5.42%), number of cobs per plant
(1.88%), and days to 90% maturity (0.75%) indicating additive
gene action for these traits. High estimates of heritability
were observed for cob length, plant height and days to 50%
tasseling. High to moderate heritability with moderate estimates
of genetic advance recorded for plant height, number of plants
per plot and days to 50% tasseling where careful selection may
lead towards improvement for these traits. Hence, provides
better opportunities for selecting plant material for these
traits in maize.
Keywords: Characters, Grain Yield, Heritability, Maize,