Cytological Studies of Coix gigantea Koenig ex Roxb. from South India

抄録

Detailed cytological studies have been made on Coix gigantea, which occurs as a pest in the paddy fields of South India. This species is mainly distinguishable by the size and shape of leaves which are rather long and narrow, resembling paddy leaves (and so this species may be considered to exhibit mimicry). The chromosome numbers of n=6 and 2n=12, have not been previously reported in this genus. This species is unique in cytological features also, as it shows distintly larger chromosomes. This is a highly stabilized species which shows perfectly regular meiosis with typical diploid behaviour.