The dynamics of phytate accumulation and water releasing during maize seed filling. 1. The dynamics of accumulation of phytic phosporus | Dinamika nakupljanja fitata i otpuštanja vode tokom nalivanja semena kukuruza. 1. Dinamika nakupljanja fitinskog fosfora
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)
Phytic acid is a phosphorus compound with the widest prevalence in nature; it encompasses 60-80% of seed phosphorus. Phytic acid is considered as an antinutritive compound and it is indigestible by monogastric animals. The lowering of the phytic content in course of increasing of available, i.e inorganic phosphorus in maize seed could be achieved through breeding of the present populations. Phosphorus metabolism in low-phytic genotypes differs during seed filling. The aim of this experiment was to determine the accumulation of inorganic and phytic phosphorus, as well as, of soluble proteins in seed of four populations and six ZP hybrids, including one potentially low phytic population. The synthesis of storage substances, such as phytate, was the most intensive during the first 30 days of seed filling, which was particularly expressed in hybrids. In seed of populations with a relatively low phytic P content the phytate accumulation lasted during the whole filling period. In accordance with the increase of the phytic P content, the contents of inorganic P and soluble proteins decreased, and this reduction reached its maximum 15-30 days after pollination. It is important to underline that the content of all three examined components was relatively uniform in hybrid seed, while non-uniformity at the level of populations, especially in the content of phytic P can serve as a source of favourable properties for breeders.
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