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Êste trabalho apresenta a determinação do número de cromossômios de quatro espécies selvagens de Arachis: A. repens, Handro, A. prostrata Benth., A. lutescens Krap. et Eig. e Arachis. sp. Foram encontrados 2n = 20 cromossômios nas três primeiras e 2n = 40 na espécie não identificada, que na Coleção da Seção de Citologia é mantida como V. 360. The chromosome number of four wild species of Arachis is reported. They are Arachis repens Handro (2n = 20) A. prostrata Handro (2n = 20), A. lutescens Krap. et Rigoni (2n = 20) and Arachis sp. (2n = 40). Root tips and very young leaves stained by haematoxylin, acetic acid and orcein were used for the countings; sometimes the material was pre-treated with paradichlorobenzene

Número de cromossômios das espécies selvagens de arachis