Генетическое разнообразие перуанских видов хлопчатников и наследование морфологохозяйственных признаков

Аннотация

Subjects of research: ruderal, cultivated-tropical and subtropical varieties and forms of G. barbadense L. and specie G.darwinii Watt. Purporse of work: identification of phylogenetic relationship congeniality of intraspecific varieties of G.barbadense L. and interspecific congeniality with the specie G.darwinii Watt. Determination of possibilities to use them in breeding. Methods of research: intcr-and intraspecific hybridization, comparative morphology, genetic and static analysis methods. The results obtained and their novelty: Application of research work using complex methods, resulted in obtaining, for the first time, new data on phylogenetic congeniality, morphological features and nature of inheritance of biological and economy-valuable traits of intraspecific varieties of G.barbadense L. and G.darwinii Watt and their hybrids F|, F2, F]B]. New hybrid forms-donors of valuable economic traits were obtained. A new phylogenetic scheme was developed and a systematic position of intraspecific varieties of Peruvian cotton species was specified. It was proposed for the first time to introduce ruderal form of spp.ruderale f.pisco to the composition of wild forms, on the basis of morphological diversities (by branching type, sizes of blooms and bolls, weight of 1000 seeds and seed cotton, length of vegetation period, photoperiodic reaction), crossing ability and nature of inheritance of morphological features in F|, F2, F]B|. Practical value: intraspecific hybrids will enrich cotton germplasm collection and might be used as donors of valuable biological and agronomic traits in cotton breeding programs. Degree of embed and economic effectivity: the new scheme of phylogenetic propinquity of the intraspecific varieties of Peruvian species will facilitate the selection of starting material and ensure efficiency of nurture of new hybrid forms for genetic and selection researches to produce competitive fine-stapled cotton in the world market. Filed of application: taxonomy, phylogeny, genetics and breeding of cotton.