Osservazioni su due casi di poliploidia indotta in <i>Vitis vinifera</i> L. (cv. Barbera)
DOI:
https://doi.org/10.5073/vitis.1981.20.335-340Abstract
Vengono descritti gli aspetti citologici ed istologici di due viti cv. Barbera irraggiate con CO60 e present anti fenotipo poliploide.
Le analisi compiute hanno riguardato il conteggio dei cromosomi negli apici radicali, l'osservazione degli strati epidermico e subepidermico delle gemme ibernanti, dei granuli pollinici, degli stomi, delle cellule dell'epidermide degli acini.
Da tali osservazioni è emerso che un individuo è totalmente tetraploide, mentre il secondo è una chimera periclinale del tipo 2n-4n.
Investigations on two cases of induced polyploidy in Vitis vinifera L. (cv. Barbera)
The authors describe cytological and histological aspects of two grapevine plants, cv. Barbera, previously irradiated with CO60 and showing polyploid phenotype.
The number of chromosomes in the root tip cells, the two first meristematic layers of wintering buds, the size of pollen grains, stornata, and epidermal cells of berries were investigated.
The results show that one of them is a tetraploid grape, while the other was found to be a 2n-4n periclinal chimera.
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