HISTOLOGICAL STUDIES ON CLUSTER'S ABSCISSION IN VITIS VINIFERA L. | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 17, Volume 79, Issue 2, July 2001, Page 551-561 PDF (2.89 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2001.318840 | ||||
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| Authors | ||||
| WAFIK KHALIL; GHOBRIAL F. GHOBRIAL | ||||
| Horticultural Research Institute, Agricultural Research Center, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| The mechanism of inflorescence abscission was investigated by microscopic observations on longitudinal sections of buds during bud-burst. Cuttings of Italia cultivar were used for this study. The results indicated that the abscission of clusters was associated with the formation of the abscission layer. The zone was formed during the stage E of bud- burst according to Baggiolini. It was developed in the part of the first branching of the cluster, adjacent to the first bract. It was composed of 5-8 layers of cells. These cells were less regid and showed poorer cementing properties than those neighbouring cells. In rare cases, very little number of clusters were transformed into tendrils. They were only those clusters which were born already, having tendrils as the first branch. | ||||
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