Results of interspecific hybridization in cotton (Gossypium hirsutum L. X G. barbadense L.)
Koinov, G., 1977: Results of interspecific hybridization in cotton (Gossypium hirsutum L. X G. barbadense L.). Rasteniev"dni Nauki 14(9): 15-22
From a cross between G. hirsutum 'S460' and a line of G. barbadense, four new varieties were selected, of which the best were named Plovdiv 9 and Plovdiv 10. They equal the standard, Chirpan 433, in yield and earliness, while exceeding it in fibre length (by 3 mm) and quality. Although their fibre is finer than that of Chirpan 433, it is also stronger.