英文摘要 |
1). Vitis lanata Roxb. is one of 16 native grapevines of Taiwan wildly distributing throughout the northern part at the elevations of 50 to nearly 600 meters above sea level of this island, The vines are very vigorous and moderately productive. It bears seedy, small, sour and worthless fruits Althrough cuttings from this Vine are easy to propagate, the root systems are vigorous with wide angled, so the immediate vstl60 of this vine seems to be as rootstock for cultivars in shallow sandyloam Soils. 2). Comparison with other wild grapevines, the morphological differences of the V. lanata, Roab. are: a). Leaves are of small size, almost entire, glabrous, dark green, leathery, with the petiolar sinus very wide, and heavily brownish hairs on the lower surface; b). Stamens are well developed, but shorter than the pistil which soon band downward and curved under it; and c). Peduncles, rachis and pedicels are covered with brownish pubescence. 3). The buds burst in Mid-Febuary and the foliage falls late and hangs to the vine until Mid-December, So the rest period of this species is very short. 4). Chromosome counts were obtained from the pollen mother cells and the root tips. Numerous figures show that the chromosome number of this species is n=19, 2n=88. |