The Growth and Co2 Exchange of Cymbidium Protocorm-Like Bodies Related to Sugar in the Culture Medium

Ogasawara, Nobuyoshi; Haneishi, S.; Suzuki, Chikashi; Takagi, H.

doi:10.17660/actahortic.1995.393.8

Cited by 2 publications

(1 citation statement)

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“…A similar pattern was previously described for the bromeliad Ananas comosus (Souza et al 2010). Furthermore, the higher respiration reported that protocorm-like bodies of the Cymbidium Melody Fair 'Marilyn Monroe' orchid showed an increase in photosynthetic rates concomitant to decreases in respiration between 20 and 60 days of in vitro culture in MS medium containing 2% sucrose (Ogasawara et al 1995).…”

Section: Time (Days)supporting

confidence: 85%

Initial in vitro plant establishment of seeds and nodal segments from bromeliad Acanthostachys strobilacea (Schult. & Schult.f.) Klotzsch differs in respiratory rates and shoot formation

Carvalho¹,

Carvalho²,

Santos³

et al. 2021

Hoehnea

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We aimed to investigate the morphological and respiratory differences during in vitro shoot formation from seeds and nodal segments (NS) of Acanthostachys strobilacea (Schult. & Schult.f.) Klotzsch, due to differences in plants obtained by micropropagation. During 35 days of culture, seeds resulted in full plants 14 days earlier than NS, with longer leaves and more roots. Nevertheless, NS plantlets exhibited shoot multiplication. Peaks in O2 consumption and CO2 release were detected at 7 and 14 days for NS and seeds, respectively, suggesting that initial growth has a high energetic requirement. However, the respiration peak was higher in NS than in seeds, possibly due to high energy consumption required for multiple bud breaks. After peaking, respiration decreased, reaching similar values between propagules by 35 days, indicative of an ongoing increase in photosynthesis in both seed and NS plants, possibly due to shoot growth. In conclusion, the development process of NS plants may affect the energy and respiratory demand differently than in seedlings

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Section: Time (Days)supporting

confidence: 85%