The objective of our investigation was to search the epidermis of Cactoideae Eaton seedlings and to compare characteristics of epidermis in different parts of the plant (hypocotyl and stem). We researched the 3-month old seedlings of ten cacti species. The epidermis characteristics of the stem and hypocotyl, such as number of epidermis cells per mm², size of epidermis cells, number of stomata per mm², size of stomata and stomatal index, were studied. It is demonstrated that the epidermis cells have a large size, and the size of these cells in the hypocotyl is significantly larger than that in the stem. Their projections and forms in different parts of the stem are also different. The paracytic type stomata are large. They are much more abundant in the stem than in the hypocotyls; the differences in the size of stomata are also observed. Thus the studied quantitative and qualitative epidermis characteristics significantly vary not only in members of different species, but also in different parts of the same plant (stem and hypocotyl). It is demonstrated that at the early stages of ontogeny, the epidermis develops towards increasing its xeromorphic basic features.

Keywords: Cactaceae, stem epidermis, stoma, Cactoideae

Full text: PDF (Ukr) 699K

1. Abud H.F., Goncalves N.R., de Sousa Pereira M., de Sousa Pereira D., de Góes Esperon Reis R., Esmeraldo Bezerra A.M. Brazil. J. Bot., 2012, 35(1): 11–16.
2. Almeida O.J.G., Paoli A.A.S., Souza L.A., Cota-Sánchez J.H. J. Torrey Botanical Society, 2013, 140(2): 196–214. http://dx.doi.org/10.3159/TORREY-D-12-00031.1
3. Anderson E.F. The Cactus family, Portland, Oregon: Timber Press, 2001, 776 p.
4. Ayala-Cordero G., Terrazas T., López-Mata L., Trejo C. J. Experimental Botany, 2006, 57(12): 3165–3174. http://dx.doi.org/10.1093/jxb/erl078
5. Bahlai K.M. Biolohichni osoblyvosti introdukovanykh u zakhyshchenyi grunt predstavnykiv rodyny Cactaceae Juss. ta yikh praktychne vykorystannia: Cand. Sci. Diss. Abstract, Kyiv, 2008, 22 p.
6. Baranova M.A. Botan. zhurn., 1985, 70(12): 1585–1594.
7. Cacti: biology and uses. Ed. Park S. Nobel, Berkeley, Los Angeles; London: University of California Press, 2002, pp. 23–37.
8. Eggli U. Plant Systematics and Evolution, 1984, 146(3–4): 197–214. http://dx.doi.org/10.1007/BF00989546
9. Haidarzhy M.M., Nikitina V.V., Bahlai K.M. Sukulentni roslyny (anatomo-morfolohichni osoblyvosti, poshyrennia i vykorystannia), Kyiv: Kyivskyi universytet, 2011, 176 p.
10. Haidarzhy M.M., Nikitina V.V., Bahlai K.M., Kalashnyk S.O. In: Vidnovlennia porushenykh pryrodnykh ekosystem: materialy IV mizhnarodnoi naukovoi konferentsii, Donetsk, 2011, pp. 90–92.
11. Jordan P.W., Nobel P.S. Botanical gazette, 1982, 143(4): 511–517. http://dx.doi.org/10.1086/337329
12. Metcalfe C.R., Chalk L. Anatomy of the Dicotyledons, Oxford: Clarendon Press, 1979, vol.1, pp. 99–102.
13. Miroslavov E.A. Struktura i funktsii epidermisa lista pokrytosemennykh rastenii, Leningrad: Nauka, 1974, 184 p.
14. Nobel P.S. Botanical gazette, 1980, 141(2): 188–191. http://dx.doi.org/10.1086/337142
15. Pausheva Z.P. Praktikum po tcitologii rastenii, Moskow: Agropromizdat, 1988, 271 p.
16. Secorun A.C., de Souza L.A. Revista Mexicana de Biodiversidad, 2011, 82: 131–143.
17. Vasilev B.R. Stroenie lista drevesnykh rastenii razlichnykh klimaticheskikh zon, Leningrad: Izd-vo Leningrad. un-ta, 1988, 206 p.
18. Vinita J., Raghuvanshi R. K. Insight Botany, 2011, 1(1): 1–4. http://dx.doi.org/10.5567/BOTANY-IK.2011.1.4
19. Zakharevich S.F. Vestnik Leningradskogo universiteta, 1954, 4: 65–75.