Divergência genética de Etlingera elatior baseada em caracteristicas agromorfológicas para flores de corte

Abstract

<p>Apesar da grande aceitabilidade do bastão do imperador (<em>Etlingera elatior</em>) pelo consumidor, seu cultivo e mercado ainda são restritos, devido à elevada massa das inflorescências (acima de 1 kg), o que dificulta os processos de colheita, manuseio, embalamento e transporte. Objetivou-se neste trabalho a realizar a caracterização agromorfológica e estimar a divergência genética entre acessos de <em>Etlingera elatior </em>(Jack) R.M. Sm. com padrão para flor de corte. Um <em>stand </em>de 75 acessos resul­tantes do cruzamento ao acaso entre os genótipos da coleção de germoplasma com variabilidade para inflorescências de interesse comercial, mantêm-se em cultivo na Unidade de Pesquisa e Desenvolvimento de Ubatuba. Dezessete descritores foram avaliados relativos a folha, inflorescência e a infrutescência. A massa da inflorescência, comprimento e diâmetro da haste floral, altura e diâmetro da inflorescência foram selecionados como os descritores de maior importância para seleção de acessos com padrão para a comercialização como flor de corte. Foram selecionados 12 acessos promissores, possuindo características adequadas ao mercado e com boa combinação de formas e coloração de brácteas.</p>

Characterization and selection of torch ginger for cut flower

“…The CYCLE, period between the floral stem emission until the harvest, ranged from 52 to 70 days. Gonçalves et al (2014) observed genotypes with CYCLE ranging from 32 to 50 days. This characteristic is interesting to the producer, once it makes possible plan the forthcoming production, aiding in their sales.…”

“…Regarding to the floral stem length (SL), it should be approximately 80 cm for a better use by the florists, allowing them to make compact or taller arrangements, and this length was observed in all genotypes. Gonçalves et al (2014), indicated ideal genotypes for cut flower should have SL between 100 to 128 cm. The genotypes IAC 2, IAC 3, IAC 34, and IAC Camburi presented averages within that range (118.30; 100.28; 116.22 and 114.23 cm, respectively).…”

“…The fresh mass (FM) of the flower stem were between 140 and 277 for all genotypes. According to Gonçalves et al (2014) despite, the great acceptability of torch ginger by the consumers, its commercialization is restricted due to the high weight of the flower stem. It may difficult harvesting, packing, and transportation processes, indicating FM between 166 to 236 g. The genotypes IAC 1, IAC 2, and cultivar IAC Camburi showed the suggested range, but lighter floral stems should be selected.…”

“…Hoult and Marcsik (2000) in Australia evaluated four cultivars of torch ginger that produced from 50 to 200 flower stems per clump, with post-harvest durability ranging from 3 to 10 days. Gonçalves et al (2014) performed the agromorphological and molecular characterization of 75 halfsiblings of torch ginger from the germplasm collection of the Agronomic Institute (IAC, Brazil), and observe a high genetic diversity. In 2015, the cultivars IAC Prumirim, IAC Itamambuca, IAC Camburi, and IAC Cacheffo (E. elatior x E. haemespherica) were introduced to the Brazilian flower market.…”

Morphological and postharvest treatments in Alpinia cultivars

“…Among the quantitative descriptors, the floral stem length and diameter and inflorescences height, diameter and fresh weight are considered relevant for cut flowers, with a view to the development of lighter plants, resulting in lower transport and packaging costs for producers (Gonçalves et al, 2014).…”