Cytogenetics of hybrids of Carthamus species Compositae) with ten pairs of chromosomes
Schank, S.C.; Knowles, P.F.
Amer. J. Bot 51: 1093-102
Plants thought to be typical of 7 species were chosen to represent the various taxa of Carthamus species with 10 pairs of chromosomes. These entities were crossed in all possible combinations and 20 of the possible 21 interspecific hybrids were obtained after 3 seasons of crosses. Analyses of the hybrids included studies of microsporocytes, pollen stainability, achene fertility, rudimentary ovaries, and other morphological characteristics.