Indian Society of Genetics & Plant Breeding

Genetic variability and stability for kernel iron and zinc concentration in maize (Zea mays L.) genotypes

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Evaluation of kernel iron (Fe) and zinc (Zn) of 67 diverse
maize genotypes grown during 2006-08 indicated
significant variation for both the micronutrients. Kernel
Fe concentration during 2006 varied from 20.38-43.79 mg/
kg, whereas the same ranged from 23.23-54.29 mg/kg and
29.22-49.24 mg/kg, during 2007 and 2008, respectively.
Kernel Zn varied from 15.06-29.88 mg/kg, 7.01-22.01 mg/
kg and 13.64-26.54 mg/kg, during 2006, 2007 and 2008,
respectively. No correlation was observed between kernel
Fe and Zn concentration in the selected set of maize
genotypes. For Fe concentration,CM140 (43.79 mg/kg) was
found to be the most promising genotype during 2006,
with HP-3 (54.29 mg/kg) during 2007 and CM212 (49.24
mg/kg) during 2008 as the best genotype. In case of kernel
Zn, BAJIM-06-6 (29.88 mg/kg), V336 (22.01 mg/kg) and
BAJIM-06-10 (26.45 mg/kg) were identified to be the best
genotype in 2006, 2007 and 2008, respectively. The study
revealed significant genotypes x environment interaction
for both kernel Fe and Zn concentration, of which kernel
Fe was found to be affected more by the change of
environmental conditions, while it was of less extent for
kernel Zn.Taking into consideration of stability parameters
V336,VQL5, CM139,VQL1, CM129, andV340 were observed
to be stable and promising genotypes for kernel Fe
concentration, while in case of kernel Zn,V336, BAJIM-06-
10,V340, BAJIM-06-7, CM129, andVQL1 were identified as
the stable genotypes.

Keywords: Maize kernel, iron, zinc, variability, environment, stability

Info

Year: 2012
Volume: 72
Issue: 4
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

info_circle
B. M. Prasanna info_circle
F. Hossain, S. Saha info_circle
S. K. Guleria info_circle
H. S. Gupta info_circle

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