In this paper, seeds of pinus koraiensis which has a characteristic of deep dormancy were selected as an experiment material, and the relation of cellular substance exudation to seed vigour is discussed based on the d...In this paper, seeds of pinus koraiensis which has a characteristic of deep dormancy were selected as an experiment material, and the relation of cellular substance exudation to seed vigour is discussed based on the dormant state, the different measuring parts and the imbibed state of seeds before testing, as well as on the respiration of embryo and endosperm. The major measured results arc as follows: (1) After soaking for 24h, the dry embryo conductivity of sccdlot L is greater that than of sccdlot H: (2) The substance exudation of dry embryo of sccdlot H is less than that of sccdlot L; (3) After seeds imbibed, the substance exudation of dormant embryo of sccdlot H is more than that of sccdlot L; (4) After germination hastening treatment, the substance exudation of H embryos is greater than that of L embryos; (5) After artificially accelerated ageing treatment, the embryo conductivity of imbibed seeds has a positive correlation with seed vigour.展开更多
快速准确无损测定牧草种子活力是当前种子生理研究中的一项重要内容,试验以甜燕麦种子为材料,采用近红外光谱结合主成分-马氏距离模式识别方法鉴别了3种不同活力的燕麦种子,研究结果表明,在4000—6900cm^-1波数范围内的光谱,通过SN...快速准确无损测定牧草种子活力是当前种子生理研究中的一项重要内容,试验以甜燕麦种子为材料,采用近红外光谱结合主成分-马氏距离模式识别方法鉴别了3种不同活力的燕麦种子,研究结果表明,在4000—6900cm^-1波数范围内的光谱,通过SNV(Standard Normal Variate)预处理方法,用4个主成分建立的模型效果最佳,模型对校正集样本和预测集样本的鉴别率都分别达到100%,该研究利用近红外光谱技术为快速准确无损测定种子活力提供了一条新途径。展开更多
文摘In this paper, seeds of pinus koraiensis which has a characteristic of deep dormancy were selected as an experiment material, and the relation of cellular substance exudation to seed vigour is discussed based on the dormant state, the different measuring parts and the imbibed state of seeds before testing, as well as on the respiration of embryo and endosperm. The major measured results arc as follows: (1) After soaking for 24h, the dry embryo conductivity of sccdlot L is greater that than of sccdlot H: (2) The substance exudation of dry embryo of sccdlot H is less than that of sccdlot L; (3) After seeds imbibed, the substance exudation of dormant embryo of sccdlot H is more than that of sccdlot L; (4) After germination hastening treatment, the substance exudation of H embryos is greater than that of L embryos; (5) After artificially accelerated ageing treatment, the embryo conductivity of imbibed seeds has a positive correlation with seed vigour.
文摘快速准确无损测定牧草种子活力是当前种子生理研究中的一项重要内容,试验以甜燕麦种子为材料,采用近红外光谱结合主成分-马氏距离模式识别方法鉴别了3种不同活力的燕麦种子,研究结果表明,在4000—6900cm^-1波数范围内的光谱,通过SNV(Standard Normal Variate)预处理方法,用4个主成分建立的模型效果最佳,模型对校正集样本和预测集样本的鉴别率都分别达到100%,该研究利用近红外光谱技术为快速准确无损测定种子活力提供了一条新途径。