PHOTOSYNTHETIC ACTIVITY OF SPRING WHEAT ON CHERNOZEM SOIL UNDER DIVERSE MINERAL NUTRITION IN NORTHERN KAZAKHSTAN
Aidarbekova T.Zh. Khussainov A.T. Syzdykova G.T. Nurpeissov I.A. Kushanova R.Zh.
June 2024Society for the Advancement of Breeding Researches in Asia and Oceania
Sabrao Journal of Breeding and Genetics
2024#56Issue 3973 - 987 pp.
The pertinent study assessed the different photosynthetic activity parameters in spring soft wheat (Triticum aestivum L.) genotypes based on diverse mineral nutrition levels. The dynamics of leaf area growth, photosynthetic potential, and net crop productivity at various developmental stages reached analysis. The determined average correlation between yield and flag leaf area for three research backgrounds showed that not all wheat genotypes responded equally to the mineral fertilizer due to their varied biological characteristics and genetic backgrounds. It was also evident that enhancement in leaf area and photosynthetic parameters appeared in wheat genotypes when applied with complete fertilizer doses. For instance, the following rates emerged for the maximum flag leaf area (12 300 m2/ha), the total leaf area (17 700 m2/ha), photosynthetic potential (0.960 million m2/day), and the net photosynthesis productivity (6.7 g/m2 per day), with the average grain yield on this background was 3.3 t/ha. The increase in the number of nodal roots of spring soft wheat genotypes mainly responded to the different mineral nutrition levels. In the context of a 0.5 calculated dose of mineral fertilizer, seven out of nine wheat lines had 22% more nodal roots, and the utmost calculated dose of mineral fertilizer was 24% more than the control treatment (unfertilized background), which was crucial for increasing the productivity considerably.
grain yield , leaf area , mineral fertilizers , nodal roots , photosynthesis , photosynthetic potential and productivity , Spring soft wheat (Triticum aestivum L.)
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NPJSC Shokan Ualikhanov Kokshetau University,, Kokshetau, Kazakhstan
Kazakh Research Institute of Plant Growing and Agriculture, Almalybak, Kazakhstan
NPJSC Shokan Ualikhanov Kokshetau University
Kazakh Research Institute of Plant Growing and Agriculture
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