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DEVELOPMENT IN NURSERY OF DIFFERENT CLONES OF CUPUAÇU TREE (THEOBROMA GRANDIFLORUM (WILD. EX SPRENG.) SCHUM)

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Author(s): D. Franciskievicz, F. D. C. Mangabeira, V. Santos, M. N. Garcia M. N. Garcia, A. Lange

Journal: Scientific Electronic Archives
ISSN 2316-9281

Volume: 4;
Issue: 3;
Start page: 16;
Date: 2013;
Original page

Keywords: cupuaçu | seedlings | Witches' Broom

ABSTRACT
This work aimed to present the results of initial development in nursery of 4 genetic materials of cupuaçu trees, being one a material without selection (control) and three clones of cupuaçu tree resistant to the fungus Moniliophthora perniciosa, causal agent of Witches' Broom. The seeds from Embrapa Amazônia Oriental (Belém - PA) were put in seed bed for germination. After 25 days of seedling emergence these were transplanted in to plastic bags, arranged in a shade house (60%), and containing agricultural substrate and forest humus (1: 3). At the end of 130 days after sowing were compared the patterns of development of girth, height and relation height / girth in a randomized block design consisting of 4 treatments and 4 replicates, each replicate consisting of 16 seedlings. Results were subjected to analysis of variance (ANOVA) and the averages compared by Tukey (5%). The values ​​obtained to girth not differ, presented as overall mean 5.08 mm, however in relation to height cultivar 215 (31cm) excelled on the cultivar 174 (25 cm) and control (23 cm), however their average not differ of material 186 (27 cm). As regards the height / girth the values ​​obtained for the control and cultivars 175, 186 and 215, were respectively, 4.6, 5.2, 5.1 and 5.9 cm / mm, being cultivar 215 different to control.
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