| 水稻穗上发芽生理生化及颖壳扫描电镜观察 |
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| 引用本文： | 蔡建秀,陈伟.水稻穗上发芽生理生化及颖壳扫描电镜观察[J].农业科学与技术,2008,9(1):75-80. |
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| 作者姓名： | 蔡建秀 陈伟 |
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| 作者单位： | 蔡建秀（泉州师范学院化生学院,福建泉州,362000）;陈伟（福建农林大学生命科学学院,福建福州,350002） |
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| 基金项目： | 福建省教育厅科研项目
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泉州师范学院"生物化学与分子生物学"重点学科资助项目 |
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| 摘 要： | Scanning electron microscopy of easy or uneasy-germinated glumes,determining the contents of endogenous hormones and the activity of α-amylase were studied from at 1-4 d pre-harvest sprouting rice.The results showed that the activity of α-amylase and the contents of IAA,GA1 3 and ZR were higher in easy-germinated rice than those in the uneasy-germinated rice,while ABA content in easy-germinated rice was lower than that in uneasy-germinated rice.The change of GA1 3/ABA rate accorded with that of GA1 3.Scanning electron microscopy showed that the cell surface of glume was loose arranged with more villus and bigger hole and germinal aperture,which had lesser mechanism resistance and better water absorptivity in easy-germinated rice.This research also indicated that pre-harvest sprouting in rice related to α-amylase activity,endogenous hormone contents and glume structure.
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| 关 键 词： | Rice Pre-harvest sprouting α-amylase Endogenous hormones Glume structure |
Study on the Physiological Biochemistry of Pre-harvest Sprouting and Scanning Electron Microscopy of Glume in Rice |
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| CAI Jian-xiu,CHEN Wei.Study on the Physiological Biochemistry of Pre-harvest Sprouting and Scanning Electron Microscopy of Glume in Rice[J].Agricultural Science ＆ Technology,2008,9(1):75-80. |
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| Authors: | CAI Jian-xiu CHEN Wei |
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| Abstract: | Scanning electron microscopy of easy or uneasy-germinated glumes,determining the contents of endogenous hormones and the activity of α-amylase were studied from at 1-4 d pre-harvest sprouting rice.The results showed that the activity of α-amylase and the contents of IAA,GA1 3 and ZR were higher in easy-germinated rice than those in the uneasy-germinated rice,while ABA content in easy-germinated rice was lower than that in uneasy-germinated rice.The change of GA1 3/ABA rate accorded with that of GA1 3.Scanning electron microscopy showed that the cell surface of glume was loose arranged with more villus and bigger hole and germinal aperture,which had lesser mechanism resistance and better water absorptivity in easy-germinated rice.This research also indicated that pre-harvest sprouting in rice related to α-amylase activity,endogenous hormone contents and glume structure. |
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| Keywords: | Rice Pre-harvest sprouting α-amylase Endogenous hormones Glume structure |
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