Resumo

REINO¹, J et al. Combined effect of scarification and temperature on the germination of herbaceous legume seeds. Pastos y Forrajes [online]. 2011, vol.34, n.2, pp. 179-184. ISSN 0864-0394.

Seeds from five herbaceous legumes with different collection times were used: Indigofera sp., Desmanthus virgatus, Clitoria ternatea, Crotalaria sp. and Centrosema pubescens, from the genebank of the Experimental Station of Pastures and Forages «Indio Hatuey», Matanzas, Cuba. A simple classification experiment with factorial arrangement and five replications (25 seeds per each) was designed, in order to evaluate the combination of four pregerminative treatments: intact seeds (control); water at 80ºC for 2' (Water 2'); 96% H2SO4 during 5' (Acid 5') and 96% H2SO4 for 10' (Acid 10'), with temperature alternance (25/30ºC, 25/35ºC and 25/40ºC). The highest germination percentages in all species were obtained at the alternate temperature 25/30ºC, and the scarification treatments were adequate to eliminate the exogenous dormancy present in each of the species. The best combination was concluded to be the alternate temperature 25/30ºC with the acid scarification in all species, except in Crotalaria sp., in which water at 80ºC for 2' combined with 25/30ºC turned out to be better.

Palavras-chave : Germination; legumes; scarification.

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