2017-11-172017-11-171999-12CARNEIRO, Iraídes Fernandes; ZICA, Lincoln Fonseca; CHAVES, Lázaro José. Quebra da dominância apical, por processos físicos, em cultivo in vitro de bananeira-maçã. Pesquisa Agropecuária Tropical, Goiânia, v. 29, n. 2, p. 51-57, jul./dez. 1999. Disponível em: <https://www.revistas.ufg.br/pat/article/view/2849/2895>.1517-6398http://repositorio.bc.ufg.br/handle/ri/12891Several physical processes were evaluated for apical dominance brake ofbanana (Musa AAB cv. Maçã) initial explants. The treatments were: 1. whole explant subculture; 2. explants divided in two; 3. explants divided in four parts; and 4. explants superficially cut thrce times(star), rhizome base maintained intact. MS media were supplemented v.ith NaHlO 4 170 mg L-1), adenine (40 mg L"'), BAP (1,5 mg L·') e Kin (3,5 mg L"'). After 80 days, explants originated from these treatments were subcultured in modified MS media, similar to the first, except for growth regulators BAP (2,3 mg L"') e AIA (0,18 mg L·'). Ali treatments produced a linear incresse on shoot number during the first 80 days, although tosses due to oxidation and/or contamination were higher when initial explants were divided in two and four parts. Shoot production at 80 days showed no significant differences among treatments, while after síx subcultures ( 164 days), explants divided in two parts produced more shoots. Ali treatments showed a decreasing tendency for multiplication rate.porAcesso AbertoCultura de tecidosMicropropagaçãoMusa AABTissue cultureMicropropagationArtigo