Oncidium: a orquídea em expansão no cenário florícola

Faria, Ricardo Tadeu de; Colombo, Ronan Carlos

doi:10.1590/s0102-053620150000400022

Cited by 6 publications

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“…It is known for its long floral stems, with numerous flowers showing yellow lips and greenish petals and sepals with brown spots (Reflora, 2020). It has great ornamental potential, being one of the most economically important species in floriculture (Faria and Colombo, 2015;Rodrigues et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Grape-based residue as a substrate in Oncidium baueri Lindl. acclimatization

et al. 2022

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The use of agricultural residues as a substrate is a promising option for orchid acclimatization, which is a critical stage of micropropagation. Thus, this study aimed to evaluate the use of grape residue S-10 Beifort®, isolated or mixed with other agricultural residues, in the acclimatization of Oncidium baueri Lindl. Five treatments were studied (S-10 Beifort®; S-10 Beifort® + carbonized rice husk (CRH); S-10 Beifort® + coconut fiber (CF); S-10 Beifort® + CRH + CF; CRH + CF), with four replications containing 10 seedlings each. After 120 days, the highest survival rate occurred with the mixture CRH + CF (62.5%). The mixture of S-10 Beifort® with CRH provided a greater shoot length (3.7 cm), not differing from the mixture of the three substrates (2.9 cm). S-10 Beifort® + CRH and the mixture of the three substrates ensured greater root length (3.8 cm). The mixture of the three residues provided the highest average of fresh and dry mass accumulation. The pH variation between the substrates was from 5.2 to 6.3, while S-10 Beifort® presented the highest electrical conductivity (2030 μS cm-1) and the mixture of this material with carbonized rice husk presented the highest water retention capacity. The use of a mixture of S-10 Beifort® with carbonized rice husk or with carbonized rice husk and coconut fiber (1:1:1) is indicated for the acclimatization of Oncidium baueri Lindl.

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Section: Introductionmentioning

confidence: 99%

Grape-based residue as a substrate in Oncidium baueri Lindl. acclimatization

et al. 2022

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“…The labellum is much bigger than the other flower parts, which, in combination with its intense yellow colour confers great prominence to the flower. Oncidium species and hybrids are among the most economically important plant species in floriculture (Faria and Colombo, 2015;.…”

Section: Introductionmentioning

confidence: 99%

In vitro culture and greenhouse acclimatization of Oncidium varicosum (Orchidaceae) with microorganisms isolated from its roots

et al. 2019

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Sustainable production of orchids may be achieved with the use of symbiotic microorganisms that improve resistance of plants to pests and diseases and reduce the need of substrate fertilization. In this study, one fungus (F1), one yeast (Y1) and one gram-positive bacteria (B+) were isolated from the roots of the orchid Oncidium varicosum and used in the cultivation of protocorms and plantlets obtained from seeds of this species. Cultivation of protocorms in Murashige and Skoog (MS) medium enriched with sucrose and inoculated with microorganisms did not result in better development of protocorms. However, the use of plantlets in the rooting phase in MS medium without sucrose and inoculated with B+ resulted in plantlets with more leaves and roots and longer shoots and roots, suggesting synergism between microorganism and plant when sucrose is absent. The major benefits of co-cultivating plantlets and these microorganisms were observed in the acclimatization in the greenhouse. Plantlets obtained with oat meal agar medium and B+ showed the highest pseudobulb diameter, number of roots, height and fresh weight among treatments. We concluded that the application of rooting-derived microorganisms in the in vitro culture and plantlet acclimatization of Oncidium varicosum is beneficial.

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“…Além desses, o emprego de reguladores de crescimento (Macnish et al, 2010;Bellé et al, 2004) e inibidores da síntese de etileno (Mapeli et al, 2009;Finger et al, 2004) (Hansen et al, 2012) e Oncidium (Faria & Colombo, 2015;Mattiuz et al, 2012;Huang & Paull, 2009 4,0 a** 4,0 (33,0) a 3,8 (39,0) a 3,0 (41,5) a 2,4 (42,6) a 1,8 (42,1) a T2 4,0 a 4,0 (33,0) a 3,8 (39,0) a 3,0 (41,5) a 2,4 (42,6) a 1,4 (39,3) ab T3 4,0 a 4,0 (33,0) a 3,4 (32,0) abc 2,4 (31,9) ab 1,2 (28,6) abc 0,4 (23,2) bc T4 4,0 a 4,0 (33,0) a 3,6 (35,5) ab 2,6 (35,1) ab 1,6 (33,8) ab 1,0 (31,1) abc T5 4,0 a 3,6 (23,2) ab 2,6 (18,4) bcd 1,8 (22,6) bc 0,4 (16,4) bc 0,0 (15,0) c T6 4,0 a 3,2 (13,4) b 2,2 (11,8) d 1,2 (13,1) c 0,2 (13,2) c 0,2 (19,1) c T7 4,0 a 3,6 (23,2) ab 2,6 (18,4) bcd 1,8 (22,5) bc 1,0 (24,0) bc 0,6 (21,9) bc T8 4,0 a 3,4 (18,3) ab 2,4 (15,1) cd 1,2 (13,1) c 0,2 (13,2) c 0,0 (15,0) c T9 4,0 a 3,8 (28,1) ab 3,2 (28,7) abcd 1,8 (22,4) bc 1,2 (27,4) abc 0,8 (29,2) abc T10 4,0 a 3,2 (16,8) ab 2,4 (17,1) cd 1,0 (11,3) c 0,2 (13,2) c 0,2 (19,1) c *Tratamentos: T1 (água destilada); T2 (sacarose a 1%); T3 (Flower ® a 1,7%); T4 (sacarose a 1% + Flower ® a 1,7%); T5 (pulsing 12 h + sacarose a 1%); T6 (pulsing 12 h + Flower ® a 1,7%); T7 (pulsing 12 h + sacarose a 1% + Flower ® a 1,7%); T8 (pulsing 24 h + sacarose a 1%); T9 (pulsing 24 h + Flower ® a 1,7%) e T10 (pulsing 24 h + sacarose a 1% + Flower ® a 1,7%). **Notas médias seguidas pelas mesmas letras não diferem entre si pelo teste de Student-Newman-Keuls a 5% de significância.…”

Section: Introductionunclassified

Longevidade de hastes florais de Oncidium baueri mantidas em soluções conservantes

2016

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Orchids have been gaining prominence in the cut flower market due to the exoticism and the singular beauty of its flowers. However, techniques which help to keep the floral quality are needed, since the commercial success is tied to the flowers longevity after cut. Thus, the aim of this study was to evaluate preservative solutions on postharvest longevity of Oncidium baueri floral stems. Floral stems, with 60 cm of length and 90% of open flowers were submitted to pretreatment in a pulsing solution, sucrose-based, for 12 and 24 hours, and placed in maintenance solutions containing sucrose and/or Flower®; keeping the control treatment, with distilled water only. These solutions were added with 0.5% of sodium hypochlorite. The evaluation to verify the quality of the flowers was performed daily using a criterion of notes, ranging from 4 to 0. From third day of evaluation, the floral stems submitted to pretreatment with pulsing solution presented statistically lower averages and at the fourth day of evaluation were considered inadequate for marketing. Increased longevity and quality of the flowers can be obtained by keeping the floral stems in distilled water or in maintenance solutions, which are 1% sucrose-based.

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Oncidium: a orquídea em expansão no cenário florícola

Cited by 6 publications

References 0 publications

Grape-based residue as a substrate in Oncidium baueri Lindl. acclimatization

Grape-based residue as a substrate in Oncidium baueri Lindl. acclimatization

In vitro culture and greenhouse acclimatization of Oncidium varicosum (Orchidaceae) with microorganisms isolated from its roots

Longevidade de hastes florais de Oncidium baueri mantidas em soluções conservantes

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