搜索结果: 1-3 共查到“生物学 Sampling”相关记录3条 . 查询时间(0.087 秒)
Comparing the efficiency of sampling strategies to establish a representative in the phenotypic-based genetic diversity core collection of orchardgrass (Dactylis glomerata L.)
core collection genetic diversity germplasm collection orchardgrass phenotypic variation representativeness sampling strategies
font style='font-size:12px;'>
2014/2/24
Establishing a core collection that represents the genetic diversity of the entire collection with a minimum loss of its original diversity and minimal redundancies is an important problem for gene ba...
A sampling theory for asymmetric communities
sampling theory asymmetric communities
font style='font-size:12px;'>
2010/11/15
We introduce the first analytical model of asymmetric community dynamics to yield Hubbell's neutral theory in the limit of functional equivalence among all species. Our focus centers on an asymmetric ...
不同地区库蚊复组群体的同工酶遗传多样性研究Genetic Diversity of Isoenzyme in Culex pipiens complex Field Populations Sampling from Distinct Area of China
库蚊复组 遗传多样性 工酶
font style='font-size:12px;'>
2008/1/10
摘要采用水平切片淀粉凝胶电泳的方法，对分布于我国5省的8个库蚊复组（Culex pipiens complex）野生群体的遗传多样性进行研究，分析了4个酶系统7个基因座(ME、MDH-1、MDH-2、MDH-3、GPD、EST-2、EST-3)的酶谱资料。结果显示：（1）群体内存在不同程度的遗传变异（He为0.098～0.41）；（2）较低的基因流水平（Nm=0.64）使遗传漂变起主要作用，造成群...