The variation of phytic and inorganic phosphorus in leaves and grain in maize populations
2010
Dragičević, V., Maize Research Institute Zemun Polje, Belgrade - Zemun (Serbia) | Kovačević, D., Maize Research Institute Zemun Polje, Belgrade - Zemun (Serbia) | Sredojević, S., Maize Research Institute Zemun Polje, Belgrade - Zemun (Serbia) | Dumanović, Z., Maize Research Institute Zemun Polje, Belgrade - Zemun (Serbia) | Mladenović-Drinić, S., Maize Research Institute Zemun Polje, Belgrade - Zemun (Serbia)
The objective of this study was to investigate genetic variability and correlation of phytic (Pphy) and inorganic phosphorus (Pi) and soluble proteins among 28 maize populations, consisted into tree groups: low-, intermediate- and high-phytic populations, with the aim to determine the potential of enhancing the P profile of maize plants and high grain yield through selection. The highest genetic variability of Pi and Pphy content in leaves is expressed in group with intermediate Pphy content in grain. Meanwhile, leaves of low-phytic populations were characterized with low Pphy, too (averagely 18%) and high content of soluble proteins (averagely 15%) in relation to high- and intermediate-phytic populations. Additionally, the lowest genetic variability of protein content was also noticeable in leaves of low-phytic populations. Positive correlation between Pi and protein content was observed in leaves of low- and high-phytic populations. The negative correlation between Pphy and Pi was detected in maize grain, but correlation was significant only in intermediate-phytic group. The highest, but not significant, average yield was observed in group of low-phytic populations, as well as its relative high genetic variability.
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