Biometrics and storage of cocoa seeds genotypes

• Autor(a) principal: Venial, Lucimara Ribeiro
• Data de Publicação: 2017
• Outros Autores: Alexandre, Rodrigo Sobreira, Camata, Henrique, Lopes, José Carlos, Zanotti, Rafael Fonsêca, Ferreira, Adésio, Aguilar, Marco Antonio Galeas
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• DOI: 10.4336/2017.pfb.37.89.1239
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1239
• topic: Theobroma cacao L.; Material genético; Germinação; Theobroma cacao L.; Genetic material; Germination

Genotypes of Theobroma cacao L. should be further studied to identify those that produce more developed and viable seeds after storage. The objective of this work was to study biometrics of cacao seeds genotypes and two periods of seed storage. Seeds biometrics were evaluate in eight cacao genotypes (treatments). Germination tests were carried out in completely randomized design in a factorial 8 x 2 (genotypes: CCN51, PH16, CEPEC2002 Ipiranga, SJ02, PS1319, TSH1188 and Comum x two periods of storage: 0 and two days). TSH1188 showed higher length, length/width, thickness and weight of 100 seeds. Water absorption of freshly harvested seed of the genotypes is slow, justified by the high water content, which does not characterizes standard features. Water levels were reduced on average 2.3 times in stored seeds compared to freshly picked. Germination of freshly harvested seeds of any genotype was 100%. However, after storage, PS1319 seeds showed the least reduction in germination (39%), whereas PH16, CEPEC2002 and SJ02 reduced 96%. Germination rate was higher, and average time less than two days in freshly harvested seeds of PS1319, indicating tolerance to desiccation. It is suggested the inclusion of genotypes TSH 1188 and PS1319 in breeding programs seeds.