مرکز منطقه ای اطلاع رساني علوم و فناوري - Heterosis and Correlation Coefficients of Fiber Characteristics of Some Cotton Hybrids (Gossypium hirsutum L. x Gossypium barbadense L.)

Abstract :

In this study, with the aim of determining the appropriate hybrid combination of some cotton varieties belonging to Gossypium hirsutum L. cotton species and Ashgabat-100 variety belonging to Gossypium barbadense L. F1 hybrids of species in addition to relations between properties. Heterosis of some fiber properties were investigated for Kahramanmaras conditions. Study was carried out with randomized complete block design experiment with 4 replicates between 2006 and 2007 years. As a result of research in cultivars fiber yield varied from 176.7 to 75.6 kg da^-1, fiber length varied from 34.5 to 27.5 mm and fiber strength varied from 38.5 to 28.4 g tex^-1. Hybrid combination fiber yield varied from 143.2 to 113.6 kg da^-1, fiber length varied from 37.5 to 31.9 mm and fiber strength varied from 38.1 to 34.4 g tex^-1. In study with regard to fiber yield and fiber strength two (2), with regard to fiber fineness one (1), with regard to fiber length three (3) and with regard to fiber uniformity one (1) combinations showed positive and significant heterosis. While positive and significant heterobelthiosis value were obtained from one (1)combination with regard to fiber length, negative and significant, heterobeltiosis value fixed for fiber yield, fiber fineness and fiber strength in five (5) and three (3) combinations respectively. One (1)combination showed positive heterobelthiosis value for (4) fiber uniformity. All of the combinations showed negatively and significant economical heterosis on account of fiber yield. Result of correlation analysis that fiber yield was significantly and positively related with fiber fineness, but negatively related other properties.