INVITRO-PROPAGATION OF KIELMEYERA-CORIACEA .1. EFFECTS OF BENZYLAMINOPURINE AND NAPHTHALENOACETIC ACID ON SHOOT MULTIPLICATIONS

Kielmeyera coriacea Martius (Guttiferae) is a typical botanic specie f rom brazilian cerrados vegetation (Savanna-like vegetation). It is pop ularly known as ''Pau-Santo''. The specific characteristic of K. coria cea is its strong suberized bark, from which, cork the main matter for making plates used for covering acustics, thermic and decorative plac es, is extracted. Nodal segments of plantlets that come from germinati on in vitro were inoculated in Murashige & Skoog (1962) culture medium enriched by several concentrations of benzylaminopurine (BAP) (0.0 - 0.45 - 4.5 and 22.3 muM) and Naphthalenoacetic acid (NAA) (0.0 - 0.55 and 5.5 muM) in all possible combinations in one factorial scheme of 4 x 3. The maximum shoots proliferation was achieved with 22.3 muM BAP + 0.45 muM NAA and higher shoots proliferation with more than 1.0 cm h eight happened when 0.45 muM BAP + 0.0 muM NAA was used.