The sum of temperature units in different pheno-phases of development of seed maize regarding the production year
Authors
Tabaković, Marijenka
Vujinović, Jasna
Stanisavljević, Rade
Štrbanović, Ratibor
Popović, Vera
Conference object (Published version)
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The aim of this study was to determine variability of temperature sums for the occurrence of
pheno-phases of silking, tasselling and pollination of seed maize. Nine maize inbred lines
were tested in two production years. Compatibility and overlapping of silking, tasselling and
pollination of parental components in a seed crop are important for achieving high yields.
According to obtained data, the degree of accumulation of temperature sums was higher in the
first year than in the second production year for all stages, except for the beginning of
tasselling. The differences were statistically significant: the greatest and smallest differences
were obtained for tasselling (t2 - 70.9oC) and the beginning of silking (s1- 20.86oC),
respectively. The effect of genotypes on differences in temperature sums was the greatest for
all pheno-phases, p<0.005. The effect of the production year on the number of temperature
units necessary for silking and pollination was also high, but there ...was no high statistical
effect on the beginning of tasselling. Since maize is a plant species that is grown in different
regions, maize growing practices should be adjusted to the main aim of maize production, to
achieving high and stable yields.
Keywords:
grow degree units (GDU) / maize / silking / tasselling / pollinationSource:
VIII International scientific agricultural symposium „Agrosym 2017“ of Republic of Srpska, October 05-08, 2017. Jahorina, Bosnia and Herzegovina - Book of proceedings, 2017, 963-967Publisher:
- Sarajevo : University of East Sarajevo, Faculty of Agriculture