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Revista Brasileira de Fruticultura

Print version ISSN 0100-2945

Abstract

SIQUEIRA, DALMO LOPES DE; VASCONCELLOS, JAYME FRANCISCO FERRARI DE; DIAS, DENISE CUNHA FERNANDES SANTOS  and  PEREIRA, WALTER ESFRAIM. Seed germination of citrus rootstocks after cooling conditions storage. Rev. Bras. Frutic. [online]. 2002, vol.24, n.2, pp. 317-322. ISSN 0100-2945.  http://dx.doi.org/10.1590/S0100-29452002000200009.

The present work was carried out in order to verify the viability period of the rootstocks 'Rangpur' lime, 'Volkameriano' lemon, 'Cleópatra' mandarin and 'Swingle' citrumelo seeds stored in permeable package at 5-7ºC for 150 days. The Germination in laboratory, seedling emergence in greenhouse and seed moisture content were performed each 30 days. Seed storage in that conditions reduced the speed of emergence index in the 'Rangpur' and 'Volkameriano' seeds. The germination of these rootstocks seeds weren't reduced when the seed moisture content was near 5%. There was highly significative correlation between seed water content and germination porcentage of 'Cleópatra' and Swingle' seeds. For viability maintenance to seeds of these rootstocks, moisture content could be kept around 20%. The 'Rangpur' and 'Volkameriano' seeds showed higher vigor as compared with the other rootstocks, while 'Cleópatra' seeds presented lower speed of emergence index.

Keywords : seeds; citrus; viability; storage.

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