Pollination related temporal sequences of reproductive development and tracing the path of pollen tubes in Cymbidium pendulum (Roxb.) Sw., an ornamental orchid

Attri, Lucky K; Nayyar, Harsh

doi:10.1016/j.flora.2021.151813

Cited by 2 publications

(4 citation statements)

References 19 publications

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“…The same findings were reported in commercial Dendrobium cultivars (O'Neill et al, 1993;Luangsuwalai et al, 2011). The progression of senescence of Cymbidium pendulum flowerrelated events was triggered by pollination (Attri and Nayyar, 2021).…”

Section: Introductionsupporting

confidence: 84%

Identification of indole-3-acetic acid as an important hormone in post– pollination of Dendrobium orchids and interaction of other hormones

2022

ANRES

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Importance of the work:A 'pollen hormone' in Dendrobium pollinia has been reported for over a century but the specific nature of such a compound or compounds has not been proven. Objectives: This study investigated the 'pollen hormone' in pollinia of Dendrobium orchid cultivars that display contrasting post-pollination phenomena. Materials & Methods:The aqueous extract of pollinia of two Dendrobium cultivars was analyzed using gas chromatography-mass spectrometry. Hormonal profiles of cytokinins (CKs), auxin (IAA), gibberellic acids (GAs), abscisic acid (ABA), jasmonic acid (JA), salicylic acid (SA), and 1-aminocyclopropane-1-carboxylic acid (ACC) were analyzed using ultra-high-performance liquid chromatography-tandem mass spectrometry. The effects of the plant hormones on post-pollination of Dendrobium cv. Miss Teen was studied. Results: An aqueous extract of pollinia showed a relatively high indole-3-acetic acid (IAA) concentration in Sakura (exhibits post pollination) was about 4.28 ng/μL, whereas no IAA concentration was detected in Miss Teen (fails to show post pollination). The IAA in the whole pollinia of Dendrobium cultivars showing post-pollination phenomena was an average of 227,070.25 ng/g pollen and higher concentrations than those cultivars that do not. Post-pollination effects were associated with elevated concentrations of IAA, ABA, SA, and gibberellins; however, no correlations were observed with JA and CKs. Dendrobium cv. Miss Teen, when treated with IAA singly or in combination with IAA plus ABA, SA, or GAs, induced the same post-pollination symptoms as found in a pollinated flower, while flowers treated with ACC did not induce a post-pollination response. Main finding: The auxin presence in the pollinia of Dendrobium was associated with the occurrence of post-pollination events. These data strongly suggested that the main 'pollen hormone' in Dendrobium flowers was likely IAA and that it interacts with ABA, SA, and some GAs.

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Section: Introductionsupporting

confidence: 84%

Identification of indole-3-acetic acid as an important hormone in post– pollination of Dendrobium orchids and interaction of other hormones

2022

ANRES

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“…Orchids are a diverse group of flowering plants, with more than 20,000 species found in the world (Attri & Kant, 2011). Bhutan has 369 orchid species, and an investigation on the orchids in the country estimated there to be more than 500 species (Pearce & Cribb, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…The most common pollinators of orchids belong to the order Hymenoptera, Lepidoptera, Diptera, birds (Dodson et al, 1969) and Coleopteran (Dalstrom, Tobgay & Wangdi, 2004). Roughly, 60% of the Orchidaceae are said to be pollinated by bees and wasps, which includes halictid bee, bumble bee, honeybee, carpenter bee and other oil gathering bees (Attri & Kant, 2011). Wasp species such as Vespa sp., robber flies, carrion flies, butterflies, and moths are some of the pollinators that are attracted to the orchids by mimicry or food rewards (Pemberton, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Study of Pollination Ecology of Selected Orchids of Kanglung, Trashigang

Choki

Sadruddin

2023

Sherub Doenme

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The study on pollination ecology on some of the selective orchids in Kanglung focuses on the pollinators of orchids, pollination mechanism and behavioural studies of the pollinators. The study was conducted based on direct and indirect method of observation. Pollinators visiting the orchids or carrying pollen were recorded and collected from the study area. A total of 11 orchids species belong to 7 genera and 6 pollinators belong to 3 orders were observed during the study period. Ctenoplectra cornuta, Bombus trifasciatus, Apis cerena, Sphinx moth, ctenoiid beetle and Parapolybia varia were identified as potential pollinators of the orchids. Food deception was the common mechanism used by orchids to attract pollinator but oil and sweet exudate were also produced by orchids to attract the pollinators. Pollination success in orchid was found to be influenced by behaviour of the pollinators and frequency of the visit was influenced by the environmental condition. This study will contribute to the pollination studies of orchids, conservation and maintenance of orchid diversity.

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Pollination related temporal sequences of reproductive development and tracing the path of pollen tubes in Cymbidium pendulum (Roxb.) Sw., an ornamental orchid

Cited by 2 publications

References 19 publications

Identification of indole-3-acetic acid as an important hormone in post– pollination of Dendrobium orchids and interaction of other hormones

Identification of indole-3-acetic acid as an important hormone in post– pollination of Dendrobium orchids and interaction of other hormones

Study of Pollination Ecology of Selected Orchids of Kanglung, Trashigang

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