Genetic, chemical, and physical predispositions of new maize inbred lines and hybrids with efficient photosynthesis
2012
Radenović, Čedomir N. | Filipović, Milomir R. | Radosavljević, Milica M. | Jovanović, Života V. | Kaitović, Željko S. | Tolimir, Miodrag M. | Grčić, Nikola M. | Crevar, Miloš S. | Stevanović, Milan D.
This study confirmed our hypothesis that new maize inbred lines and hybrids derived from them had a dominant property of an efficient photosynthetic model. This property is successfully used in breeding programmes, modern technologies of the seed, and commercial maize production. This statement is supported by the results displayed on the erect position of the top leaves of new maize inbred lines and photosynthetic and florescence parameters: the change of the delayed chlorophyll fluorescence intensity during its course and dynamics, the Arrhenius criterion for the determination of critical temperatures (phase transition temperatures) and the activation energies, as a measure of conformational changes in chloroplasts and the thylakoid membrane. Furthermore, a grain structure including its physical and chemical parameters of new maize inbred lines and hybrids was analysed in the present study. In addition, relevant breeding, seed production and technological traits, properties and parameters of new maize inbred lines and maize hybrids were observed in the present study. The overall presented results show that properties of new inbred lines and maize hybrids are based on the nature of conformational and functional changes that occur in their chloroplasts and thylakoid membranes, as well as, on progressive effects in modern breeding, contemporary hybrid seed production, and the commercial maize production. [Projekat Ministarstva nauke Republike Srbije, br. 03E211, 03E22, 142025, TR-20003, TR-20007, TR-20014]
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