Perfilhamento e expansão de touceiras de helicônias

Costa, Andréa Santos da; Loges, Vivian; Castro, A. C. R. de; Verona, André Luiz; Pessoa, Cleucione de Oliveira; Santos, Venézio Felipe dos

doi:10.1590/s0102-05362006000400013

Cited by 11 publications

(10 citation statements)

References 4 publications

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“…The information of number of shoots and clump expansion is important for definition of plant spacing and other parameters for crop management. Costa et al (2006) observed positive correlation between NSC and APC (r=0.71 ** ), for all the 10 genotypes evaluated in this study, 11 months after planting. This indicates that genotypes with higher shoot emission present faster clump expansion.…”

Section: Resultssupporting

confidence: 56%

“…Criley (1988) explained that species with grouped growth present reduced shoot emission and slow clump expansion. Plant spacings smaller than 1.5 x 3.0 m are not recommended for genotypes with grouped growth (Costa et al, 2006). Wider spacings allow for avoiding competition for light and improving production of inflorescences (Fernandes, 2000) and their quality (Ibiapaba et al, 1997).…”

Section: Resultsmentioning

confidence: 99%

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Heliconia Genotypes Under Partial Shade: I. Shooting and Blooming

Costa¹,

Loges²,

Castro³

et al. 2009

Acta Hortic.

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In the Northeast Region of Brazil, the weather conditions are very suitable for growing heliconia plants of great potential for the cut flower industry. There is vigorous vegetative growth, producing many strong lateral shoots, forming large clumps. The Federal Rural University of Pernambuco State (UFRPE) maintains its own Heliconia Germplasm Collection, which was the source of the 10 genotypes evaluated in this study. The experimental design was the randomized complete block design, with four replications. Cultivated under partial shade, the genotypes evaluated during 18 months were: H. bihai, H. bihai 'Nappi Yellow', H. caribaea × H. bihai 'Carib Flame', H. collinsiana, H. episcopalis, H. pendula, H. psittacorum × H. spathocircinata 'Golden Torch', H. rostrata, H. stricta I and H. stricta II. The evaluated agronomic parameters were: number of shoots per clump (NSC); area per clump (APC); number of flowering stems per clump (NIC); beginning of flowering stage (BFS); days for inflorescence emergence (DIE); number of days from inflorescence emergence to harvesting (DIH); length of flowering cycle (LFC). The NSC varied from 31. 7 (H. bihai 'Nappi Yellow') to 143.7 (H. psittacorum × H. spathocircinata 'Golden Torch'). The APC varied from 0.39 m 2 (H. bihai 'Nappi Yellow') to 2.53 m 2 (H. stricta II). These genotypes yielded 31.7 and 105.8 shoots per clump, respectively. The NIC varied from 12 (H. stricta II) to 55.8 (H. psittacorum × H. spathocircinata 'Golden Torch'). The LFC varied from 131 days in H. psittacorum × H. spathocircinata 'Golden Torch' (short cycle) to 238 days H. stricta II (medium cycle). These results answer some of the initial questions from growers currently working at the Atlantic Forest Zone on plant selection and crop management. The information obtained with this study also serves as first guidelines for further studies on heliconia plant breeding programs in this environment.

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Section: Resultssupporting

confidence: 56%

Section: Resultsmentioning

confidence: 99%

Heliconia Genotypes Under Partial Shade: I. Shooting and Blooming

Costa¹,

Loges²,

Castro³

et al. 2009

Acta Hortic.

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show abstract

“…The decreasing linear tendency of the relation HC/NP is due to the fact that in the treatments of higher density, in spite of having more tillers, many of these did not reach the productive phase. This might be attached to the lower availability of solar irradiance promoted by the higher tiller density, besides of the greater competition for nutrients, with direct interference in the production of floral stems (Costa et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Management of tillering in the production of flower stems of heliconia cultivated in pots

et al. 2019

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Potted cultivation of tropical flowers presents good projections for the northeastern region of Brazil; however, it still faces some peculiarities regarding conduction and management. The objective of this study was to evaluate the effect of tillering on the production of Heliconia psittacorum L.f. cv. Red Opal, grown in flowerpot. The experiment was carried out in a protected environment at the Campus of Agricultural Sciences (CCA) of UNIVASF, Petrolina - PE, Brazil, between 2014 and 2016. A completely randomized design was used, with four tiller densities per pot (4, 8, 12 and 16 tillers) and eight replications, totaling 32 plots. The irrigation system was automated and monitored by weighing lysimetry. Were evaluated: efficiency of water use (EUA); harvested flower stems (HC); ratio of harvested stems and number of tillers (HC / NP); number of leaves (NF); duration of vegetative (DFV) and productive phases (DFP); total cycle (CT); floral stem length (CHF); floral stem diameter (DH), bracts length (CB) and equivalent diameter of the collar (DECH). The results were subjected to regression test. The EUA was higher in the density of 16 tillers pot-1; the HC variable presented an increasing linear trend; a decreasing linear trend was detected for HC/NP, NF, DFP, DH, CB and DECH. The number of tillers in the pot does not limit the emission of floral stems. However, the quality of these is inversely proportional to the tiller density.

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“…According to the literature, plants of 'Golden Torch' heliconia can be grown under half shade and/or full sunlight (BROSCHAT; DONSELMAN, 1986;CATLEY;BROOKING, 2006;COSTA et al, 2006). However, given the results obtained, it is noted that the commercial yield of heliconias grown in full sunlight, in areas of a high incidence of solar radiation, and consequently high temperatures, such as in the region of Juazeiro, BA, does not meet a standard of quality comparable to that of plants produced under shading screens.…”

Section: Resultsmentioning

confidence: 99%

Growth and production of Heliconia under different light conditions

Silva

Ono

Santos

et al. 2017

SCA

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The use of shading screens of different colors can change the spectral quality of radiation and, as a consequence, the growth and production of crop plants. The aim of this study was to evaluate aspects of the growth, yield, and quality of floral stems of Heliconia psittacorum × H. spathocircinata 'Golden Torch' grown under different light conditions. The treatments consisted of four conditions: blue photoconversion screens (35%-40%); red photoconversion screens (18%-21%); black shading screens (45%-49%), and full sunlight. The experiment consisted of two parts. In the first, growth was assessed, whereas in the second, aspects related to the production and quality of floral stems were examined. The experimental design was in randomized blocks with split plots in time. Each plot contained six blocks, with 11 replications per block, giving a total of 66 pots per plot. The evaluations were performed at 30-day intervals over a 6-month period. In the analysis of growth, red screens contributed to the growth of the plants, increasing the number of shoots and leaves, and also plant height. The productivity and quality of floral stems was, however, highest in plants grown under blue and black screens. It can be concluded that, under the prevailing experimental conditions, the use of blue screens (35%-40%) and black screens (45%-49%) is suitable for production of the floral stems of 'Golden Torch' heliconia. Key words: Heliconia psittacorum × H. spathocircinata 'Golden Torch'. Photoconversion screen. Ornamental plant. ResumoO uso de malhas de sombreamento de diferentes cores pode alterar a qualidade espectral da radiação e, como consequência, o crescimento e a produção de uma cultura vegetal. Desta forma, o objetivo do presente trabalho foi avaliar aspectos do crescimento, produção e qualidade das hastes florais de Heliconia psittacorum x H. spathocircinata 'Golden Torch' cultivadas sob diferentes condições de luminosidade. Os tratamentos consistiram em quatro ambientes: malha fotoconversora azul (35-40%); malha fotoconversora vermelha (18-21%); malha de sombreamento preta (45-49%) e pleno sol. O experimento constou de duas partes: na primeira realizaram-se avaliações de crescimento e na segunda, foram estudados aspectos relacionados à produção e qualidade das hastes florais. O delineamento experimental foi em blocos casualizados em esquema de parcelas subdivididas no tempo, sendo seis blocos por parcela, cada bloco com onze repetições, totalizando sessenta e seis vasos por parcela. As avaliações foram realizadas durante seis meses, com intervalos de trinta dias. Nas análises de crescimento observou-se que a malha vermelha contribuiu com o crescimento das plantas, incrementando o número de perfilhos, folhas e altura das plantas. A produtividade e a qualidade das hastes florais foi superior em plantas cultivadas sob tela azul e preta. Conclui-se que, nas condições experimentais estabelecidas, o uso das malhas azul (35-40%) e preta (45-

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Perfilhamento e expansão de touceiras de helicônias

Cited by 11 publications

References 4 publications

Heliconia Genotypes Under Partial Shade: I. Shooting and Blooming

Heliconia Genotypes Under Partial Shade: I. Shooting and Blooming

Management of tillering in the production of flower stems of heliconia cultivated in pots

Growth and production of Heliconia under different light conditions

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