Abstract
Sugarcane c.v. CoC 671 (2n=108) was crossed with sweet sorghum (Sorghum bicolor L. 2n=20) and the hybrids obtained had the chromosome number varying from 2n=60 to 64. At meiosis, 6-11 univalents, 11-25 bivalents, 0-3 trivalents and 0-3 qadrivalents were observed. The chromosome associations, other than bivalents, indicate the influence of sorghum genome in chromosome pairing. Even though the hybrids were completely pollen sterile, few back-crossed progenies were obtained when pollinated with sugarcane pollen. In the BC1 plants, the chromosome number varied from 2n=48 to 118.
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