| 春小麦抗穗发芽机理的研究 |
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| 引用本文： | 刘晓冰,曾寒冰,李文雄. 春小麦抗穗发芽机理的研究[J]. 北京农学院学报, 1988, 0(2) |
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| 作者姓名： | 刘晓冰 曾寒冰 李文雄 |
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| 作者单位： | 东北农学院(刘晓冰，曾寒冰)，东北农学院(李文雄) |
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| 摘 要： | 春小麦穗发芽与种子休眠密切相关。胚及果皮中含有发芽抑制物质是导致休眠的主要原因;果皮的结构,尤其外表皮细胞的排列方式、形状在一定程度上控制着休眠深度。α-淀粉酶活性与穗发芽并非正相关,应从籽粒成熟过程中的变化趋势确定其与穗发芽的关系,但胚乳对赤霉素的不敏感性可做为抗穗发芽选择指标。本文还讨论了颖片、芒中的抑制物质及温度对穗发芽的影响。
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| 关 键 词： | 穗发芽 休眠 表皮细胞 α-淀粉酶活性 |
STUDIES ON THE RESISTANCE MECHANISM TO PREHARVEST SPROUTING IN SPRING WHEAT |
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| Liu Xiaobing Zeng Hanbing Li Wenxiong. STUDIES ON THE RESISTANCE MECHANISM TO PREHARVEST SPROUTING IN SPRING WHEAT[J]. Journal of Beijing Agricultural College, 1988, 0(2) |
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| Authors: | Liu Xiaobing Zeng Hanbing Li Wenxiong |
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| Affiliation: | The Northeast Agricultural College |
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| Abstract: | Twelve cultivars with different characteristics and various treatmentswere used at the present study.The results showed as follows:Dormancy is closely related to preharvest sprouting.The longer the dor-mancy,the more resistant to preharvest sprouting.The seed coat structureinfluenced dormancy, particularly the epidermal cells.In resistant genotypesit appeared to arrange neatly and rectangle,and in the susceptible genoty-pes arrange loosely and were ellipse in shape. Alpha--amylase activity wasnot positively correlated with preharvest sprouting in present study. Ho-wever,its insusceptiblity to GA may be treated as a selection criterion.Temperature influenced preharvest sprouting to some extent. The in-hibiting substance in seed coat and ear was also discussed. |
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| Keywords: | dormancy preharvest sprouting epidermal cells alpha-amylase activity |
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