Karyomorphology of Vitis vinifera, V. rotundifolia and Their Hybrid
1992 年 57 巻 1 号 p. 91-95
詳細
1992 年 57 巻 1 号 p. 91-95
Karyomorphology of V. vinifera cv. Gulabi, V. rotundifolia cv. James and their hybrid, revealed the somatic chromosome numbers as 2n=38, 40 and 39 respectively. In these karyotypes, 13 chromsomes pairs were median and 6 or 7 were sub-median. Total lengths of the complements were 52.78μm in James, 49.30μm in Gulabi and 51.16μm in hybrid. Gulabi had the largest chromosome (1.80μm) and James had the shortest chromosome (0.94μm). Chromosome diameter was inversely proportional to the length. All the karyotypes had only one pair of SAT-chromosomes, SAT-knob being attached to the long-arm of the chromosome. On the whole, karyotypes appeared to be symmetrical, though there are vast variations in morphology and disease resistance, suggesting the inter-chromsomel variations by way of accumulation of genic differences.
