Theoretical preconditions for the development of effective methods for selection of self-incompatible genotypes of Medicago sativa L.
2008
Bugayov, V.D., Ukrainian Academy of Agrarian Sciences, Vinnitsa (Ukraine). Feed Research Institute | Maksimov, A.M., Ukrainian Academy of Agrarian Sciences, Vinnitsa (Ukraine). Feed Research Institute | Zadorozhnyi, V.S., Ukrainian Academy of Agrarian Sciences, Vinnitsa (Ukraine). Feed Research Institute
When selecting lucerne on basis of self-incompatible genotypes, one of the most difficult moments is the process of selection from the initial population which demands much checking work over several years. It is especially important to estimate self-incompatibility taking into account different types of geitonogamy pollination. As a result of researchers (2002-2007) the nature of lucerne self-incompatibility manifestation as a result of selection of the best genotypes for further selection of synthetic varieties has been studied. It is determined that variability of self-incompatibility in investigated populations has more than 20% variation. Distribution in population has exponential character with model class in the interval of 90-100%, which makes up from a third to a half of the whole population. Plants with stable manifestation of this trait make up 3.9%. It is shown that the rise self-incompatibility level abortion of seed germs of lucerne ovary falls down. Besides abortions of absolutely self-incompatible genotypes were less by 1.5-3 than in plants with self-incompatibility level of 60.0-79.9.
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