为了解青海云杉插穗生根的外在因素和内在生理生化基础,采用网袋容器和自动间歇喷雾扦插繁殖技术,系统研究了青海云杉插穗母株年龄、部位、类型及激素处理等对插穗生根的影响,并采用高效液相色谱法测定了不同插穗类型内源激素吲哚乙酸(I...为了解青海云杉插穗生根的外在因素和内在生理生化基础,采用网袋容器和自动间歇喷雾扦插繁殖技术,系统研究了青海云杉插穗母株年龄、部位、类型及激素处理等对插穗生根的影响,并采用高效液相色谱法测定了不同插穗类型内源激素吲哚乙酸(IAA)、脱落酸(ABA)、赤霉素(GA3)、玉米素(Z)、玉米素核苷(ZR)、异戊烯基腺嘌呤(IPA)、酚类化合物和糖类的含量。结果表明,以7年生母株枝条作穗条扦插繁殖效果最佳;一级侧枝的生根情况优于二级侧枝和顶枝穗条,树冠下部穗条生根优于上部枝条;激素处理能显著提高硬枝插穗的生根率,其中以IBA 200 m g/kg处理3 h的生根效果最好;邻苯二酸和儿茶酸2种酚类化合物可能对生根有抑制作用;枝条和针叶中三糖含量随母株年龄增加而增大,而葡萄糖含量却呈下降趋势;高含量的Z和ZR均有利于插条生根,IAA对生根无促进作用,IPA对插条生根可能具有一定的抑制作用,单一的某种激素对青海云杉插穗生根无明显影响。展开更多
This cemetery lies on a high mound surrounded by a roughly ring-shaped section of a river course. Excavations were carried out near the center of the mound in 1997, which resulted in the revelation of a rather intact ...This cemetery lies on a high mound surrounded by a roughly ring-shaped section of a river course. Excavations were carried out near the center of the mound in 1997, which resulted in the revelation of a rather intact cemetery of the Liangzhu culture. At the center of the mound summit is an almost square zone of burnt clay, which may have been a place for sacrificial activities. A shallow north--south trench divides the cemetery into a western and an eastern parts, in which large tombs and small ones are arranged respectively in good order. The funeral objects unearthed include pottery, jades, stone tools and bone, horn and ivory ornaments, and distinct difference exists between the two categories of tombs in the type, number and quality of grave goods. The cemetery began to be used in the early Liangzhu culture, while its main part was shaped in an earlier stage of the late Liangzhu. Its discovery provides in many ways new material for studying this cultural complex.展开更多
文摘为了解青海云杉插穗生根的外在因素和内在生理生化基础,采用网袋容器和自动间歇喷雾扦插繁殖技术,系统研究了青海云杉插穗母株年龄、部位、类型及激素处理等对插穗生根的影响,并采用高效液相色谱法测定了不同插穗类型内源激素吲哚乙酸(IAA)、脱落酸(ABA)、赤霉素(GA3)、玉米素(Z)、玉米素核苷(ZR)、异戊烯基腺嘌呤(IPA)、酚类化合物和糖类的含量。结果表明,以7年生母株枝条作穗条扦插繁殖效果最佳;一级侧枝的生根情况优于二级侧枝和顶枝穗条,树冠下部穗条生根优于上部枝条;激素处理能显著提高硬枝插穗的生根率,其中以IBA 200 m g/kg处理3 h的生根效果最好;邻苯二酸和儿茶酸2种酚类化合物可能对生根有抑制作用;枝条和针叶中三糖含量随母株年龄增加而增大,而葡萄糖含量却呈下降趋势;高含量的Z和ZR均有利于插条生根,IAA对生根无促进作用,IPA对插条生根可能具有一定的抑制作用,单一的某种激素对青海云杉插穗生根无明显影响。
文摘This cemetery lies on a high mound surrounded by a roughly ring-shaped section of a river course. Excavations were carried out near the center of the mound in 1997, which resulted in the revelation of a rather intact cemetery of the Liangzhu culture. At the center of the mound summit is an almost square zone of burnt clay, which may have been a place for sacrificial activities. A shallow north--south trench divides the cemetery into a western and an eastern parts, in which large tombs and small ones are arranged respectively in good order. The funeral objects unearthed include pottery, jades, stone tools and bone, horn and ivory ornaments, and distinct difference exists between the two categories of tombs in the type, number and quality of grave goods. The cemetery began to be used in the early Liangzhu culture, while its main part was shaped in an earlier stage of the late Liangzhu. Its discovery provides in many ways new material for studying this cultural complex.
