The dynamics of phytate accumulation and water releasing during maize grain filling. 2. The dynamics of water releasing | Dinamika nakupljanja fitata i otpuštanja vode tokom nalivanja zrna kukuruza. 2. Dinamika otpuštanja vode
2010
Dragičević, V., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia) | Ristić, D., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia) | Mladenović-Drinić, S., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia)
The aim of this experiment was to examine dynamics of free, hygroscopic and constitution water during seed filling in four populations and six ZP hybrids of maize, as well as, their correlation with phytic and inorganic phosphorus, as well as, soluble proteins. The dominant water form present during the seed filling was free water. Decreasing of its content occurred 30 days after pollination, while the period of maximum seed weight maintenance was observed more in hybrids than in populations. Moreover, the period of intensive seed filling was longer in hybrids than in populations. The dynamics of hygroscopic water had sinusoidal trend for all genotypes. The drop in the content of free water during seed filling occurred at the same time as the decrease in the content of constitution water. The alterations in contents of free and constitution water were, to a great extent, related to the phytate accumulation and the decrease of soluble proteins. From the point of view of selection, the genotypes, such as the population 216, with low phytate and moisture contents in seeds, could serve as a basis for breeding programmes of genotypes with a greater dry down rate.
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