采取混合取样策略,利用荧光SSR技术对来源于我国7个省(自治区)的90份糯玉米地方品种和6个标准测验种自交系基因组的31个简单序列重复(SSR)位点进行了分析。在90个糯玉米地方品种中,共检测出216个等位变异,每个位点检测出2～12个,平均6.9...采取混合取样策略,利用荧光SSR技术对来源于我国7个省(自治区)的90份糯玉米地方品种和6个标准测验种自交系基因组的31个简单序列重复(SSR)位点进行了分析。在90个糯玉米地方品种中,共检测出216个等位变异,每个位点检测出2～12个,平均6.97个,多态性信息量(PIC,polymorphic information content)为0.67,标记指数(MI,marker index)为4.92。可初步将90份糯玉米地方品种划为3个类群,其中,广西和贵州的糯玉米地方品种的遗传多样性相对更丰富。展开更多
The approaches adopted so far in China to calculate reserves of ore deposits have largely been dependent on polygonal methods, including a cross-section method and a geological block method. However, for various reaso...The approaches adopted so far in China to calculate reserves of ore deposits have largely been dependent on polygonal methods, including a cross-section method and a geological block method. However, for various reasons, especially, the complexity of the geology, and the ore bodies, the deposits became gradually known as development and exploitation took place. There is a certain difference between the geological and cutoff grade at the stage of geological prospecting and mining, which will have a great impact on both mine construction and production. As much accurate information as possible on the spatial distribution patterns of ore bodies and global reserves is essential to improve the production efficiency and reduce production cost. The 10-9 ore body of Lutangba in the Gejiu Tin Deposits was selected as our research object, using a log Kriging and an inverse distance weighing method. In our paper the results are compared with the reserves calculated by the polygonal block method. The global estimate and estimation errors associated with each estimation method are discussed.展开更多
文摘采取混合取样策略,利用荧光SSR技术对来源于我国7个省(自治区)的90份糯玉米地方品种和6个标准测验种自交系基因组的31个简单序列重复(SSR)位点进行了分析。在90个糯玉米地方品种中,共检测出216个等位变异,每个位点检测出2～12个,平均6.97个,多态性信息量(PIC,polymorphic information content)为0.67,标记指数(MI,marker index)为4.92。可初步将90份糯玉米地方品种划为3个类群,其中,广西和贵州的糯玉米地方品种的遗传多样性相对更丰富。
文摘The approaches adopted so far in China to calculate reserves of ore deposits have largely been dependent on polygonal methods, including a cross-section method and a geological block method. However, for various reasons, especially, the complexity of the geology, and the ore bodies, the deposits became gradually known as development and exploitation took place. There is a certain difference between the geological and cutoff grade at the stage of geological prospecting and mining, which will have a great impact on both mine construction and production. As much accurate information as possible on the spatial distribution patterns of ore bodies and global reserves is essential to improve the production efficiency and reduce production cost. The 10-9 ore body of Lutangba in the Gejiu Tin Deposits was selected as our research object, using a log Kriging and an inverse distance weighing method. In our paper the results are compared with the reserves calculated by the polygonal block method. The global estimate and estimation errors associated with each estimation method are discussed.
