ISHS Acta Horticulturae 800: X International Pear Symposium
'TAIWAN NASHI-C' AND 'TAIWAN MAMENASHI' (PYRUS CALLERYANA), NEW ROOTSTOCKS FOR QUINCE TREES |
| Authors: | R. Pio, E.A. Chagas, W. Barbosa, A.A. Alvarenga, F.A. Entelmann |
| Keywords: | Cydonia oblonga Mill., Chaenomeles japonica Koehne, grafting, propagation |
| Abstract:
In Brazil, the quince tree (Cydonia oblonga Mill.) has always been commercially propagated by cuttings. Due to the low vigor of the young plants, mainly in the first years after planting in the orchard, a series of trials were undertaken to test the feasibility of using the ‘Japanese’ quinces (Chaenomeles japonica Koehne) as rootstocks for the fruiting quinces. Although the results were satisfactory, the lack of other options of other highly vigorous rootstocks for quince trees and following observations in both nursery and field of the high vigor of the pear rootstocks ‘Taiwan Nashi-C’ and ‘Taiwan Mamenashi’ (Pyrus calleryana Dcne), the trials reported here were developed to verify the performance of quince cultivars grafted on these pear rootstocks. The ‘Japonęs’, ‘Mendoza Inta-37’, ‘Portugal’, ‘Smyrna’ and ‘Provence’ quinces were grafted by the cleft grafting method onto ‘Taiwan Nashi-C’ and ‘Taiwan Mamenashi’ seedlings and maintained in plastic bags (3 L of capacity) in the dormant period. The scion sticks used had three buds each and were collected from the mother plants at the Agronomic Institute (IAC). The young plants were maintained in the nursery and evaluated after 30 days for the percentage of alive and sprouted grafts. The length and diameter of the grafts were measured 60, 90, 120 and 150 days after grafting. There was no difference among rootstocks and quince cultivars on the percentage of alive and sprouted grafts; the ‘Taiwan Nashi-C’ rootstock presented good results for the ‘Provence’, ‘Mendoza Inta-37’ and ‘Smyrna’ quinces, with scion sprouts superior to 70 cm on length and diameter of 6.0 mm, while the ‘Taiwan Mamenashi’ rootstock can be an excellent option for ‘Portugal’ and ‘Japonęs’ quinces. | |
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