Possibilities of using of an intraspecific diversity of the species G.herbaceum L. and G.arboreum L. on the basis of solution of the phylogenetic kindred questions

Germplasm and Genetic Stocks

poster

Муминов, Хасан; Абдуллаев, Файзулла

Муминов, Хасан

Абдуллаев, Файзулла

The importance of an initial material for breeding consists available a biological variety of forms of plants and in their genetic identification on a complex of valuable traits. In this connection studying and an all-round estimation of germplasm on morphological and biological and economic-valuable traits and properties defined its topicality. At studying of morphological variability of cotton had been made attempt to find out adaptive value of some traits, and also to compare a trait of wild and cultural species that should be used at finding-out of their relations. Subjects of research were the intraspecific diversity of species G.herbaceum L. and G.arboreum L. Subject of the research was intraspecific and interspecific phylogenetic relations of an intraspecific diversity of the species G.herbaceum L. and G.arboreum L. Purpose of given investigation was to specify the systematic position and identify phylogenetic relationship congeniality and the genetic potential of the wild, ruderal, tropical and subtropical varieties and forms of polymorphic species of G.herbaceum L. and G.arboreum L. of genus Gossypium for their utilization in practical breeding. Interspecific and intraspecific hybridization, comparative morphology, genetic and statistical methods was used in this research. Application of the research worked using integrated methods, resulted in obtaining, for the first time, new data on phylogenetic relationship congeniality, the systematic position of intraspecific genetic varieties and the forms of polymorphic species G.herbaceum L. and G.arboreum L. was specified. For the reasons of geographical distribution, the results of an intraspecific and interspesific hybridization, and the distinct morphological and biological traits, it is proposed to elevate the taxonomic rank of f. harga (G.herbaceum ssp. pseudoarboreum) and f. sangiuneum (G.arboreum ssp. neglectum) to subspecies. The nature of inheritance and the degree of correlative interconnection of the studied morphological and biological, and were revealed economically valuable traits of the F1 and F2 plants of intra- and interspecific hybrids. The chart of phylogenetic relationship was developed congeniality of intra- and interspecific varieties of G.herbaceum L. and G.arboreum L. It is necessary to notice that the intra- and interspecific transgressive hybrid forms will be used in breeding as donors of valuable agronomic traits. Received forms substantial replenish and enrich of cotton gene pool with new germplasm. Therefore, the new chart of phylogenetic relationship congeniality of the intraspecific and interspecific varieties of G.herbaceum L. and G.arboreum L. facilitates selection of source material and ensure the efficiency for development of new hybrid forms for genetic and breeding researches to produce commercially competitive cotton varieties in the world market.