Pollinizer influence on almond seed dormancy |
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| Institution: | 1. Institut National Agronomique de Tunisie, 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia;2. Laboratoire d’Amélioration de la Productivité de l’Olivier et des Arbres Fruitiers, Institut de l’Olivier, BP 1087, 3000 Sfax, Tunisia;3. Department of Pomology, Estación Experimental de Aula Dei (EEAD-CSIC), Apdo. 13034, 50080 Zaragoza, Spain;4. Agromillora Iberia S.L, C/El Rebato s/n, Subirats, 08739 Barcelona, Spain;1. Department of Horticulture Science, University of Hormozgan, Hormozgan, Iran;2. Temperate Fruit Research Center of Horticultural Sciences Research Institute (HSRI), Agricultural, Research, Education and Extension Organization, Tehran, Iran;1. Dipartimento di Scienze delle Produzioni Agrarie e Alimentari, University of Catania, Catania 95123, Italy;2. Consiglio per la Ricerca e la Sperimentazione in Agricoltura (CRA, ACM), 95024 Acireale, Catania, Italy;3. Dipartimento Scienze Agrarie e Forestali, University of Palermo, Palermo 90128, Italy;1. School of Science and Health, University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia;2. NSW Department of Primary Industries, Locked Bag 4, Richmond, NSW 2753, Australia;3. NSW Department of Primary Industries, EMAI, Menangle, NSW 2570, Australia;1. Department of Horticultural Science, College of Agriculture, Shahrekord University, Shahrekord, Iran;2. Department of Biotechnology (Plant Production and Genetic), College of Agriculture, Jahrom University, Jahrom, PO BOX 74135-111, Iran |
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| Abstract: | Breaking seed dormancy is necessary for the completion of germination. Maternal tissues (integument and endocarp) appear to control seed germination, although the effect of the pollinizer has also been described. In this work, the influence of the pollinizer flowering time was studied on the stratification requirements of almond seed germination. Stratification requirements were determined in seeds (with and without endocarp) from crosses between a female progenitor and pollinizers of different flowering dates. The results showed an influence of the pollinizer in the stratification requirements of seeds with endocarp. However, no correlations were found between pollinizer flowering date and stratification requirements, which seem to be determined mainly by the female progenitor. In the case of seed stratification without endocarp, the results did not show any influence of pollinizer on stratification requirements. The observed variability within females (within or between crosses) could be due to differences in the shell characteristics, the different accumulation of inhibitors in the integument, or the genetic nature of the embryos. |
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