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布顿大麦草是小麦族芒麦草属多年生二倍体植物，其染色体一般显中等深度Ｇｉｅｍ－ｓａ－Ｃ带。大多数染色体都有较明显的端带、中间带，着丝点带不太明显。
Bouton barley is a family of diploid Phyllostachys species diploid plants, the chromosomes are generally moderate depth Giem-sa-C band. Most chromosomes have more obvious end of the band, the middle zone, the centripetal band is not obvious.