Combining ability in roselle (Hibiscus sabdariffa L. var. Altissima)

Combining ability studies in a 10 x 10 F₂ diallel set of roselle indicated that mean sum of squares due to gca as well as sca were significant for six characters, while gca: sca ratio more than unity suggested the prevalence of additive gene effects. The genotype AMY 2 was the best general combiner for economic attributes while the crosses AR 105 x AMY 2 and AMV 2 x CP 510 were the best specific cross combinations.