Published in AgroLife Scientific Journal, Volume 8, Number 2
Written by Anatoliy PODHAIETSKYI, Natalia KRAVCHENKO, Vladislav KOVALENKO
The specificity of the mutual influence of radiation exposure and interspecific hybridization methods through their simultaneous use on the germination of hybrid seeds, the growth and development of formed plants has been experimentally proved. The difference in the germination rate of hybrid seeds in the control is influenced by the origin of hybrids, in particular maternal forms, that has resulted in a 1.8-time difference between combinations. Half of the populations have shown a positive reaction of the use of radiation exposure to germination energy, regardless of its dose that should be considered as the process stimulation. However, in some combinations, the value of some variants is lower than in the control that indicates a specific interaction of the two factors: interspecific progeny origin and radiation dose. In the five combinations of six, the maximum effect of seed germination energy is found in the variant with the radiation dose of 200 Gy, compared to the control, that is in the range of 3.0-8.0 absolute percent. The similar, though not always the same data, have been obtained on the laboratory seed germination. The average value of the indicator, compared with germination energy, is 1.7-2.2 times greater. The disturbance of the growth and development of young plants isby and large observed as the formation of two stems from the initial point of growth or after the formation of rosette-like tops, as well as the formation of only cotyledon leaves without the point of growth.
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