Eficiência das minicepas e microcepas na produção de propágulos de clones de Eucalyptus grandis Efficiency of ministumps and microstumps of Eucalyptus grandis clones for minicutting and microcutting production
2003
Miranda Titon | Aloisio Xavier | Geraldo Gonçalves dos Reis | Wagner Campos Otoni
No presente estudo objetivou-se avaliar a eficiência dos jardins clonais nas técnicas de microestaquia e miniestaquia de quatro clones de Eucalyptus grandis, quanto a sobrevivência, vigor e capacidade produtiva das microcepas e minicepas em coletas sucessivas de microestacas e miniestacas. As microcepas utilizadas foram oriundas de mudas rejuvenescidas por micropropagação, mediante subcultivos in vitro, e as minicepas, de miniestacas oriundas de plantas propagadas pelo método da estaquia convencional (macroestaquia). As minicepas e as microcepas apresentaram desempenho similar, tendo sido observado, para ambas, elevada taxa de sobrevivência, vigor e capacidade produtiva de material para propagação vegetativa.<br>The objective of this work was to evaluate the efficiency of clonal gardens in the microcutting and minicutting techniques of four Eucalyptus grandis clones regarding the survival, vigor and productive capacity of the microstumps and ministumps in successive collections of microcuttings and minicuttings. The microstumps were obtained from rejuvenated tissue explants through subculture in vitro, and the ministumps by minicuttings derived from conventional rooted cuttings. The ministumps and microstumps of E. grandis exhibited similar performance, i.e., high survival rate, vigor and productive capacity of vegetative propagation material.
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