2673ReseaRch M illets, which are comprised of a number of C 4 smallgrained, annual cereal grasses including barnyard millet, kodo millet, and little millet have abundant within-species racial diversity. These species also differ in ploidy levels. The ploidy levels in barnyard millet range from tetraploid to hexaploid to octaploid, while kodo and little millets are tetraploids (de Wet et al., 1983;Wanous, 1990). Barnyard millet has two distinct cultivated species, the Indian barnyard millet [E. colona (L.) Link] and Japanese barnyard millet [E. crus-galli (L.) Beauv], each with two Abbreviations: CB, culm branching; CR%, coincidence rate; CT, culm thickness; DF, days to 50% flowering; FL, fruit length; FLBL, flag leaf blade length; FLBW, flag leaf blade width; FLSL, flag leaf sheath length; FW, fruit width; G × E, genotype × environment; GH, growth habit; H´, Shannon-Weaver diversity index; IL, inflorescence length; LLR, length of lowest raceme; LRL, longest raceme length; MD%, mean difference percentage; NBT, number of basal tillers; NL, number of leaves; NNPAI, number of nodes on primary axis of inflorescence; NRAT, number of racemes above thumb; NRI, number of racemes per inflorescence; NSIB, number of secondary inflorescence branches; OPAS, overall plant aspects score; PE, panicle exsertion; PH, plant height; PL, peduncle length; PP, plant pigmentation; TL, thumb length; VD%, variance difference percentage; VR% variable rate.