Document Type : Original Article
Authors
1
1Decidous Research Dept., Horticulture Research Institute, Agricultural Research Center, Giza, Egypt.
2
Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.
3
1Decidous Research Dept., Horticulture Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
This study was conducted during the 2022 and 2023 seasons, respectively, to evaluate a novel Le-Conte pear clone (Pyruscommunis L. × Pyruspyrifolia N.) cultivated on sandy soil under drip irrigation systemat El-Sadat City, Menofya Governorate, Egypt. The evaluation focused on flowering behavior, fruit physical and chemical characteristics, yield storage, molecular genetic profiling, and fire blight resistance.Flower bud break was at 16-18 March , while fruit set at 7-10 April with a duration 19-24 days. Furthermore, Fruit maturity was at 20-23 June with a70-76 days with a fruit yield (23.05-23.15 Kg/tree and 4.841-4.861 ton/Fed). During fruit storage at 0±1 ºC and 90-95% humidity for one month; T.S.S significantly increasesed while the rest parameters decreased. Molecular analysis using six RAPD and six ISSR primers generated 13 and 23 DNA bands respectively, indicating a rich genetic profile. Notably, the examined trees showed complete resistance to fire blight (Erwiniaamylovora), with zero infection detected across both seasons. These results highlight clone’s agronomic potential and disease resistance, positioning it as a promising cultivar for commercial pear production in fire blight-prone regions. Further horticultural investigations under varying environmental conditions are recommended to confirm the stability of these traits and support the formal release of this novel clone, particularly in light of increasing climate change challenges.
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