Biometria dos frutos e sementes, germinaÃÃo e crescimento de plÃntulas e plantas jovens de 15 espÃcies lenhosas de leguminosae da Caatinga de Alagoinha-PE

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

(Seed and fruits biometry, germination and growth of seedlings and saplings of 15 woody Leguminosae species from Alagoinha-PE caatinga). In spite of the lack of data about qualitatives and quantitatives features, germination strategies and initial growth of caatinga species aiming morphological and ecological studies, 15 woody Leguminosae species with mature fruits and having high abundance were chosen. Theses species were researched during the period from july/2001 to January/2002. The mass (g) and length (cm) of the seeds and fruits were collected; the germination tests were processed with non-scarified and scarified seeds using sand paper; the growth was observed for 8, 15 and 30 days long. The highest proportions for fruits were: weight <5g; length >5 >10cm and width >1 <2 cm and for seeds: weight >0,10g; length >0,5 <2,0cm and width <0,5cm. During the germination, two groups were identified: first one having 33,3% of the no dormancy species and the second one having 66,7% of species with dormancy. The first showed above 90% of dormancy around eight days while the latter had, after scarification, similar results in the same period. On 30 days of growth (cm), the proportion seed/aerial portion of the plants was 2:1

ASSUNTO(S)

crescimento germinaÃÃo growth caatinga anatomia vegetal biometry leguminosae germination biometria leguminosae caatinga

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