ASSESSMENT OF NEW BULGARIAN AND FOREIGN COTTON VARIETIES BY APPLYING OF CLUSTER ANALYSIS
Ana Stoilova Saldzhieva, Neli K. Valkova
Pages: 49-64
Published: 1 Jan 2010
Views: 122
Abstract: The aim of this study was to assess the productivity and fiber quality of modern Bulgarian and some foreign cotton varieties in comparison with the standard cultivars, as well as the genetic distance between them by applying the method of cluster analysis. Eleven Bulgarian varieties, four Turkish and one Macedonian were included in a trial carried out in 2008 and 2009. It was established that the Bulgarian varieties resulted from two differently purposeful breeding programs differed mainly in fiber length, fineness and lint percentage. The cluster analysis based on the varieties agronomic and fiber technological properties confirmed the genetic differences between them. In a complex evaluation the varieties Darmi and Helius were the best and surpassed Chirpan-539 (the standard for earliness and productivity) in seed cotton yield and had higher index of earliness than it. The variety Helius combined its higher productivity with comparatively high lint percentage, the variety Darmi – with longer fiber than the standards. The Macedonian variety 5140 in our climatic conditions was inferior to the standard Chirpan-539 in seed cotton yield by 4.8 % and in lint percentage by 2.6 %. The Turkish varieties were late in maturity. Because of their lower yields and latens in maturity, they are not suitable to be introduced as commercial varieties. However, they distinguished by bigger bolls, longer fiber and higher lint percentage, and set up higher the first fruit-branch then the Bulgarian ones, and in this respect they proved to be very valuable as initial material for the Bulgarian cotton breeding. The cluster analysis provides useful additional information about the similarity and genetic distance of genotypes. The Bulgarian varieties were genetically distant from the Turkish ones.
Keywords: cotton, g. hirsutum l, varieties, cluster analysis, productivity, fiber properties
Cite this article: Ana Stoilova Saldzhieva, Neli K. Valkova. ASSESSMENT OF NEW BULGARIAN AND FOREIGN COTTON VARIETIES BY APPLYING OF CLUSTER ANALYSIS. Journal of International Scientific Publications: Materials, Methods & Technologies 4, 49-64 (2010). https://www.scientific-publications.net/en/article/1003365/
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