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Title: Seedling production of Bertholletia excelsa in response to seed origin and position inside fruit
Authors: Dionisio, Luiz Fernandes Silva
Cusi Auca, Edgar
Schwartz, Gustavo
Bardales Lozano, Ricardo
Miró Agurto, Jimmy
Corvera Gomringer, Ronald
Keywords: Bertholletia Excelsa
Germinación de las semillas
Características de semillas
Poder germinativo
Germinabilidad de las semillas
Madre de Dios
Issue Date: Jul-2019
Publisher: Universidade Federal Rural de Pernambuco
Citation: Revista Brasileira de Ciências Agrárias, 14(3): e5662
Abstract: Bertholletia excelsa, known as Brazil nut, is an economically valuable tree species from the Amazon. Seeds of B. excelsa figure as one of the most important non-timber forest products in Bolivia, Brazil, and Peru. These seeds, however, have physiological dormancy, which makes the germination slow, irregular, and often in low percentages. Such biological feature represents a bottleneck to the production of high quality seedlings. In an experiment performed in Puerto Maldonado, Peru, ten fruits were collected per individual in 15 trees of B. excelsa in each of the two areas: an experimental planting and a native forest. Several variables regarding fruit biometry, germination, initial growth, and seedlings quality indexes were measured in order to compare B. excelsa seedlings produced by seeds from two areas and also regarding the lower and upper seed position inside the fruit. Both fruit length and diameter presented low variation and most of the fruits had flat shape. Seeds were more abundant in the lower position (mean = 12.9 ± 2.2) than in the upper position (mean = 6.5 ± 2.1) inside the fruit. Considering the total number of seeds per fruit, the means were 19.4 ± 3.2 and 17.5 ± 3.7 for planted and native forest, respectively. Complete germination did not differ between areas (F1, 56 = 1.945, p = 0.169). Seedlings produced with seeds from planted and from the lower position inside the fruit presented higher quality indexes.
ISSN: 1981-0997
Appears in Collections:Artículos en revistas indexadas

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