<b>Clonal evaluation of new ornamental pineapple hybrids to use as cut flowers

Abstract

ABSTRACT. Embrapa Cassava and Fruits has developed ornamental pineapple hybrids for several categories of ornamental use including cut flowers, potted plants and landscaping. The objective of this study was to carry out a clonal evaluation of two ornamental hybrids using quantitative and qualitative morphological descriptors to recommend these hybrids as new ornamental pineapple cultivars. Twenty plants of each hybrid (PL01 and PL04) were evaluated regarding the response to floral induction as well as the stability and homogeneity of the clones in two production cycles. The descriptive statistics were calculated and analyzed to determine the genetic distance based on the Gower algorithm. Four groups were formed, two using parental data and the other two containing the different hybrids that were evaluated in the two growing cycles. In the floral evaluation, the time from field planting to harvest of the stem as a cut flower was determined to be as long as 17 months in the first cycle and 13.5 months in the second cycle for both hybrids. They were characterized as a novelty in the flower market; they showed genetic stability and homogeneity and can be recommended as new cultivars of ornamental pineapple because they exhibit satisfactory quality and meet the market requirements.Keywords: Ananas sp., cut flower, floral induction, new cultivars, plant breeding.Avaliação clonal de novos híbridos de abacaxizeiros ornamentais para uso como flores de corte RESUMO. A Embrapa Mandioca e Fruticultura desenvolveu híbridos de abacaxi ornamental para diferentes usos, dentre eles, flor de corte, plantas de vaso e paisagismo. O objetivo desse estudo foi realizar a avaliação clonal de dois híbridos ornamentais usando descritores morfológicos quantitativos e qualitativos, a fim de serem recomendados como novas cultivares de abacaxis ornamentais. Vinte plantas de cada híbrido (PL01 e PL04) foram avaliadas em dois ciclos de produção em relação à resposta à indução floral, bem como a estabilidade e homogeneidade dos clones. Foram realizadas estatísticas descritivas e uma analise para determinação da distância genética, com base no algoritmo de Gower. Foram formados quatro grupos, sendo dois com os parentais e dois com os diferentes híbridos avaliados nos dois ciclos da cultura. No que se refere a avaliação do florescimento, do plantio no campo até o ponto de corte foram aproximadamente 17 meses no primeiro ciclo e 13,5 meses no segundo ciclo para ambos os híbridos. Os híbridos se caracterizaram como uma novidade no segmento de flores mostrando-se estáveis e homogêneos e podem ser recomendados como novas cultivares de abacaxi ornamental por apresentarem qualidade satisfatória e atenderem as exigências de mercado.Palavras-chave: Ananas sp., flor de corte, indução floral, novas cultivares, melhoramento de plantas.

Potential bottom‐up control of Metamasius callizona in Florida, USA

“…Hybridization between Florida and Belize T. utriculata could be done in the laboratory and the hybrids then released into Florida's forests. Hybridization has been used in agriculture (Warschefsky et al., 2014; Katche et al., 2019; Dreisigacker et al., 2021), ornamental plant trades (de Souza et al., 2014; Costa et al., 2016), and other human endeavors, but it is only recently, and tentatively, being used in conservation and ecosystem reconstruction (van Oppen et al., 2015; Filbee‐Dexter & Smajdor, 2019). A genetic introgression project started in 1995 has been successful in saving Florida's panther population; long‐term monitoring shows their populations have gained greater genetic diversity and abundance since the start of the project (van der Kerk et al., 2019).…”

Paclobutrazol and ethylene on growth and nutrient accumulation in potted ornamental pineapple

“…The Brazil geographic position facilitates access to the international market and generates opportunities for enterprises in the flower and ornamental plant production sector (Costa Junior et al, 2016). An ornamental plant with a landscape effect and of great importance for the aforementioned sector is the ornamental pineapple.…”

“…bracteatus × A. comosus var. erectifolius, which has potential for pot cultivation (Costa Junior et al, 2016).…”

“…The ornamental pineapple important characteristics such as intense green color and absence of thorns in the leaves, generally responds to flowering induction 10 months after field planting and 13.5 months after potted planting (Taniguchi et al, 2015;Costa Junior et al, 2016). In edible cultivars, the plants response to induction is largely determined by the age or size of the plant (Mendes et al, 2011;Fernandes et al, 2018;Tellez et al, 2023).…”

Analysis of the economic viability of organic production system of ornamental pineapple plants for cut stems

“…The worldwide popularity of pineapples as ornamental plants has been growing in recent years due to their beauty, originality and the postharvest durability of flowers and stems, prompting rising demand for new cultivars (Souza et al, 2012a;Costa Junior et al, 2016;Pereira et al, 2018). Brazil is a large producer of ornamental pineapple plants, with production concentrated in the Northeast region, especially in the states of Ceará and Rio Grande do Norte.…”