RESEARCH STEPS AND WATER CONDITIONS IN THE SEEDS DURING SWELLING BY NUCLEAR MAGNETIC RESONANT SPECTROSCOPY
The study of plants, especially cereals, which provide most of the human nutrition, necessitates a comprehensive study of the characteristics of the physiology and structure of seeds. This direction has both theoretical and practical significance. The objects of study were the winter wheat varieties of the «Hosildor (Sanzar-8)», «Unumli Bugdoy», «Tezp-Ishar», «Sanzar-6», «Sanzar-4» varieties. They differ in varying degrees of drought tolerance. Experiments were carried out on seeds obtained in field and greenhouse conditions at different stages of maturation in the Tashkent State Agrarian University. The state of water in the seeds was studied at the final stages of maturation using the method of spin nuclear magnetic resonance. As a result of studies, the total decay curves of the signal obtained on the seeds when they were dried in air after the interruption of development were determined. The differences from the «Unumli Bugda» variety after drying the seeds to an air dry state, which show a rapid decline of the spin echo ms, are revealed. The results of studies obtained by the method of nuclear magnetic resonance, show a heterogeneous distribution of water in the seeds of wheat.