THE HISTO-ANATOMICAL ASPECTS OF THE LOCAL POTATO VARIETIES PLANTLETS MAINTAINED IN VITRO BY THE SLOW GROWTH
Journal Title: Analele Stiintifice ale Universitatii Alexandru Ioan Cuza din Iasi, Serie noua, Sectiunea II a. Biologie vegetala - Year 2013, Vol 59, Issue 1
Abstract
The authors had investigated the structure of vegetative organs (roots, stolon, shoots, microtubers and ramifications thickened) to five local populations of potato maintained in the in vitro collection of the Suceava Genebank, Romania, by the slow growth method. A comparative analysis of samples obtained by the explants subculturing on four formulas of culture medium (a medium of micromultiplication – MS (1962) medium supplemented with 40 g/l sucrose and 6 mg/l daminozide, control medium – and three conservation medium, with the addition of 30 mg/l daminozide, 40 g/l mannitol and 40 g/l sorbitol) for 2, 7, 12 and respectively 17 months, have revealed, especially, quantitative differences: number of tector hairs and/or secretory hairs, number and distribution of cells with oxalifer sand, number of xylem and phloem vessels into bundles conductive. Cortical parenchyma of the root, to meatic type, has the cells whose size decreases inwards. In the internal cortex of the ramifications thickened the cells shows walls transverse of division.
Authors and Affiliations
IUSTINA CIOBANU, LĂCRĂMIOARA IVĂNESCU, CONSTANTIN TOMA
Keywords
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