Creation of highly adaptive source material for varietal selection of leaf lettuceJournal: Scientific review, Науковий огляд, Научное обозрение (Vol.23, No. 2)
Publication Date: 2016-03-19
Authors : Tkalych Yu. V.;
Page : 74-87
Keywords : leaf lettuce; source selection material; adaptability;
The results of scientific research on the study of source material adaptive capacity for varietal selection of leaf variety seed lettuce were highlighted. Objective of the research: to analyze the adaptive properties of inbred lines of leaf variety seed lettuce and allocate valuable sources for varietal selection. Methods of research: during the growing period of plants the phonologic observations were carried out: dates of seeding, sprouting, appearance of first true leaf, early (10%) and mass (75%) onset of economic suitability, shooting, flowering, seeds ripening. The lines were evaluated compared to correspondent breed-standard Snizhynka which appears in the State Register. Research results: Seven promising highly productive inbred lines which were distinguished by high stability by yield under the conditions of growing in agro-climatic zone of Northern Forest Steppes of Ukraine were identified as a result of 3-year research (2013-2015). Conclusions. As a result of 3-year research (2013-2015) seven promising inbred lines of leaf variety seed lettuce were selected that exceeded breed-standard Snizhynka by productivity, distinguished by high levels of adaptability by productivity and are promising source material for use in selection programs.
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