Épocas de indução floral e soma térmica do período do florescimento à colheita de abacaxi 'Smooth Cayenne'

Carvalho, Sérgio Luiz Colucci de; Neves, Carmen Sílvia Vieira Janeiro; Bürkle, Rodrigo; Marur, Celso Jamil

doi:10.1590/s0100-29452005000300022

Cited by 29 publications

(29 citation statements)

References 3 publications

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“…If blossoming is not induced, the harvesting of floral stems may be extended by 60 days due to uneven blossoming. The average number of days from induction to blossoming (emergence of floral buds) of 'Smooth Cayenne' pineapple is 48.3 days and can extend to 115.5 days depending on induction time (Carvalho, Neves, Bürkle, & Marur, 2005). The period from induction to harvest for one parental of the ornamental pineapple, A. comosus var.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2016

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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.

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Section: Resultsmentioning

confidence: 99%

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

et al. 2016

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“…Selected seedlings from the cultivar Smooth Cayenne (Hawaii) type slips were used; this is the most planted cultivar, and also has a base growth temperature (15.8ºC) well suited to the conditions of the Northwest region of Paraná (CARVALHO et al, 2005). The northwest, north, and west regions of the State are the most suitable for pineapple culture (cultivar Smooth Cayenne; Hawaii) because of lower climatic risks (RICCE et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Residual production of pineapple biomass under different levels of nitrogen and potassium in northwestern Paraná

et al. 2015

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Emphasis on studies that seek sustainable energy alternatives to oil has increased over the last few years. Ethanol derived from sugarcane remains a promising technology for biofuel production. Waste from pineapple culture remains is a potential alternative raw material for biofuel production. The goal of this study was to determine the potential of residual biomass production of a pineapple crop, subjected to fertilization by different levels of nitrogen and potassium. The experiment was conducted in Northwest Paraná, in a commercial area in Santa Isabel do Ivaí-PR. The climate in this area is subtropical humid according to the Köppen classification, and has a sandy dystrophic red acrisol.The experimental design was a 4 × 4 factorial, where factor A: N doses (0; 11; 22; and 33 g per plant) and factor B: K 2 O doses (0; 11; 22; and 33 g per plant. The production of residual pineapple biomass responded differently to the N and K doses applied. Potassium fertilization had a positive linear correlation, up to the addition of 33 g plant -1 with a production of 5.88 Mg ha -1 . A dose of 18.138 g plant -1 yielded in the maximum dry biomass production for nitrogen fertilization.

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“…To determine phenology, the site's thermal time in degree-days, the difference between accumulation of mean daily temperature and base temperature, above which the plant is unable to perform its physiological functions, must be calculated (CARVALHO et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

<b>Phenology and leaf accumulation in vernalized and non-vernalized strawberry seedlings in neutral-days</b> - doi: 10.4025/actasciagron.v36i1.17285

et al. 2014

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ABSTRACT. Phenology and phyllochron are parameters that help in characterizing vegetal growth and development. This study is an evaluation of the performance of the vernalized and non-vernalized Albion strawberry cultivar in relation to phenology and phyllochron in substrate. The experiments were developed in the greenhouse of the Horticulture Sector of the Universidade de Passo Fundo, Rio Grande do Sul State. The plants were placed in bags spread over wooden benches and filled with substrate formed by carbonized rice hulls and Mec Plant Horta 2 ® . The experimental design used for both experiments was randomized blocks with 4 repetitions and 8 plants per parcel. In each parcel, 4 plants were randomly marked and evaluated for phenology and phyllochron. For phenology, the dates of onset of flowering and fruiting and the beginning and the end of the harvest were registered. For phyllochron, a weekly count of the number of leaves was performed. A linear regression of the number of leaves (NL) in the main corona and the accumulated thermal time (Att) was performed. Vernalization predicts the cycle of the Albion cultivar, the leaf appearance rate and the phyllochron when compared to those without vernalization.Keywords: Fragaria x ananassa Duch., phenologic stages, thermal time. Fenologia e acúmulo de folhas em mudas vernalizadas e não vernalizadas em morangueiro de dias neutros RESUMO.A fenologia e o filocrono são parâmetros que auxiliam na caracterização do crescimento e desenvolvimento vegetal. O objetivo do trabalho foi avaliar o desempenho da cultivar de morangueiro Albion com e sem vernalização quanto à fenologia e ao filocrono, em substrato. Os experimentos foram desenvolvidos em estufa agrícola no Setor de Horticultura da Universidade de Passo Fundo, Estado do Rio Grande do Sul. As plantas foram dispostas em sacolas distribuídas sobre bancadas de madeira, preenchidas com substrato formado por casca de arroz carbonizada e Mec Plant Horta 2 ® . O delineamento experimental utilizado para os dois experimentos foi de blocos casualizados, com quatro repetições e oito plantas por parcela. Em cada parcela foram marcadas ao acaso quatro plantas, nas quais foi realizada as avaliações de fenologia e filocrono. Para fenologia registrou-se datas do início do florescimento e da frutificação, início e final de colheita. Para filocrono semanalmente realizou-se a contagem do número de folhas. Foi realizada regressão linear entre o número de folhas (NF) na coroa principal e a soma térmica acumulada (STa). A vernalização antecipa o ciclo da cultivar de morangueiro Albion, a taxa de aparecimento de folhas e o filocrono quando se compara com as sem vernalização.Palavras-chave: Fragaria x ananassa Duch., estádios fenológicos, soma térmica.

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Épocas de indução floral e soma térmica do período do florescimento à colheita de abacaxi 'Smooth Cayenne'

Cited by 29 publications

References 3 publications

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

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

Residual production of pineapple biomass under different levels of nitrogen and potassium in northwestern Paraná

<b>Phenology and leaf accumulation in vernalized and non-vernalized strawberry seedlings in neutral-days</b> - doi: 10.4025/actasciagron.v36i1.17285

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