Tropical epiphytic orchids as an object of space botany investigations and a design element for spacecraft flight decks and orbital stations

1Cherevchenko, TM, 1Zaimenko, NV
1M.M. Gryshko National Botanic Garden of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kosm. nauka tehnol. 1998, 4 ;(5):141–147
Publication Language: Ukrainian
Epiphytic orchids are shown to be more stable in a long stay on board an orbital station than terrestrial species. Simulations revealed that the activity of native growth stimulators (free auxins and gibberellines) under the prolonged clinostating conditions varied in epiphytic orchids to a lesser extent than in terrestrial orchids. This factor, together with a weaker geotropic reaction, seems to be a cause of their stability in microgravitation conditions. We found also that orchids with the monopodial type of shoot system branching are less stable at microgravity than the sympodial species.
Keywords: orbital stations, space botany, space life
1. Borzenkova R. A., Mokronosov T. A. Filtering methods and the processing of biomagnetic signals under the influence of noise factors. Trudy biologo-pochvennogo instituta, Is. 20, 148—152 (1973) [in Russian].
2. Vlasov V. P. Bioassays on plant hormones and inhibitors. In: Methods for determination of plant hormones, growth inhibitors, defoliants and herbicides, 7—12 (Nauka, Moscow, 1973) [in Russian].
3. Kefeli V. I. Natural growth inhibitors and Phytohormones, 253 p. (Nauka, Moscow, 1976) [in Russian].
4. Muromtsev G. S., Agnistikova V. N. Gibberellins, 208 p. (Nauka, Moscow, 1984) [in Russian].
5. Cherevchenko T. M., Mayko T. K., Bogatir V. B., Kosakovskaya I. V. Perspectives in the Use of Tropical Orchids for Space Investigation. In: Space Biol. Biotechnol., 41—45 (Nauk. dumka, Kiev, 1986) [in Russian].
6. Moorby J. The influence of carbohydrate and mineral nutrient suply on the gronth of potato tubers. Ann. Bot., 32, P. 57 (1968).