Chromosomes responsible for sensitivity of embryo to abscisic acid and dormancy in wheat |
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Authors: | Kazuhiko Noda Takakazu Matsuura Masahiko Maekawa Shin Taketa |
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Institution: | (1) Research Institute of Bioresources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan;(2) Faculty of Agriculture, University of Kagawa, Iketo 2393, Miki-Cho, Kagawa, 761-0795, Japan |
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Abstract: | The sensitivity of the embryo to abscisic acid (ABA) has been reported toplay an important role in seed dormancy. Using ditelocentric lines of wheatcv. Chinese Spring (CS, nondormant and ABA insensitive), F2 seedsbetween monosomic lines of CS and a wheat line Kitakei-1354 (dormant,ABA sensitive) and deletion lines of CS chromosome 4A, germinability ofseeds and embryo-half seeds incubated in water and ABA were examined. The results indicated that the long arm of chromosome 4A carried majorgene(s) for the embryo sensitivity to ABA and dormancy. Chromosome2D might be also involved in the sensitivity to ABA. |
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Keywords: | ABA sensitivity dormancy preharvest sprouting Triticum aestivum wheat |
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