Neutral black soil was mixed with strong saline-alkali soil in different weight ratios, then physiological indexes during seed germination and seedling growth in soil of different ratios and the corresponding leaching...Neutral black soil was mixed with strong saline-alkali soil in different weight ratios, then physiological indexes during seed germination and seedling growth in soil of different ratios and the corresponding leaching liquor treatments were observed to explore effect of saline-alkali stress on oat seed germination and seedling growth, and analyze tolerance of oat to saline-alkali soil. The results showed that germination ability of oat seeds reduced with the increasing saline-alkali stress, salt injury index increased and seedling growth was inhibited. Effect of different saline-alkali stresses on germination ability of oat seeds showed difference, and effect of leaching liquor treatment on oat seed germination was stronger than that of soil treatment.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
基金Sponsored by National Natural Science Foundation of China(31200419)Science and Technology Foundation of Jilin Education Department(2015-366)
文摘Neutral black soil was mixed with strong saline-alkali soil in different weight ratios, then physiological indexes during seed germination and seedling growth in soil of different ratios and the corresponding leaching liquor treatments were observed to explore effect of saline-alkali stress on oat seed germination and seedling growth, and analyze tolerance of oat to saline-alkali soil. The results showed that germination ability of oat seeds reduced with the increasing saline-alkali stress, salt injury index increased and seedling growth was inhibited. Effect of different saline-alkali stresses on germination ability of oat seeds showed difference, and effect of leaching liquor treatment on oat seed germination was stronger than that of soil treatment.
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。