Cytomixis in shoot apex of Norway spruce [Picea abies (L.) Karst.]
Tóm tắt
Atypical cell walls and nuclei were observed in the apex of Norway spruce shoots from late April to early May on the material collected from a few grafts of a clone of Norway spruce growing on an experimental area. Images of ultrastructure attest to cytomixis. The phenomenon of cytomixis has previously been described in various plant material, both in the meiotic and mitotic cells, but this is the first report of cytomixis in gymnosperms.
Tài liệu tham khảo
Barow M, Meister A (2003) Endopolyploidy in seed plants is differently correlated to systematics, organ, life strategy and genome size. Plant Cell Environ 26:571–584
Bobak M (1976) Electron microscopic study of the influence of trifluralin on the submicroscopic structure of inter kinetic nuclei on the process of karyokinesis and cytokinesis of meristematic cells in the horse bean Vicia faba. Acta Fac Rerum Nat Univers Comenianae Physiol Plant 11:19–25
Chatha GS, Bir SS (1988) Cytomixis in some woody Indian species. Nucleus 31:8–13
Datta AK, Biswas AK (1984) Cytomixis and trisomic in Nigella sativa L. Cytologia 49:437–445
Falistocco E, Tosti N, Falcinelli M (1995) Cytomixis in pollen mother cells of diploid Dactylis, one of the origins of 2n gametes. J Heredity 86:448–453
Gates RR (1911) Pollen formation in Oenothera gigas. Ann Bot 25:909–940
Kostritsyna TV, Soldatov IV (1991) Cytomixis in apical meristems of Prunus domestica L. × Perisca vulgaris Mill. hybrid shoots. Genetica 27:1790–1794
Körnicke M (1901) Uber ortsverannderung von zellkernen. Niderrhein S.B. Ges Natur Heilkunde Bonn 8:14–25
Muranty H, Sourdille P, Bernard S, Bernard M (2002) Genetic characterization of spontaneous diploid androgenic wheat and triticale plants. Plant Breed 121:470–474
Nagl W (1978) Endopolyploidy and polyteny differentiation and evolution. North-Holland, Amsterdam
Pan YF, Wang XY, Zheng GC (2002) The arrangement of microcrabecular network during chromatin migration process and immunolocalization actin and myosin in pollen mother cells of David lily. Caryologia 55:217–227
Sinha ARP (1985) Cytomixis during microsporogenesis in Natural populations of some plant species (Scrophulariaceae). Cytologia 50:341–346
Souza AM, Pagliarini MS (1997) Cytomixis in Brassica campestris var. oleifera (Brassicaceae). Cytologia 62:25–29
Spurr AR (1969) A low-viscosity epoxy resin embedding medium for electron microscopy. J Ultrastruct Res 26:31–43
Tarkowska J (1960) Cytomixis in the epidermis of scales and leaves and in meristems of root apex of Allium cepa L. (in Polish with English summary). Acta Soc Bot Polon 29:149–168
Tarkowska J (1973) The nature of cytomixis. Caryologia (Suppl) 25:151–157
Zhang WC (2002) Progress in research on intercellular movement of protoplasm in higher plants. Acta Bot Sin 44:1068–1074
Zheng GC, Yag Q, Zheng Y (1987) The relationship between cytomixis, chromosome mutation and karyotype evolution in lily. Caryologia 40:243–259