QUANTITATIVE VARIATION IN PHLOX: COMPARISON OF SELFING AND OUTCROSSING SPECIES
QUANTITATIVE VARIATION IN PHLOX: COMPARISON OF SELFING AND OUTCROSSING SPECIES
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福禄考的数量变化：自交和异交物种的比较
DOI：
10.1002/j.1537-2197.1989.tb11350.x
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发表时间：
1989
影响因子：
3
通讯作者：
D. Levin
中科院分区：
文献类型：
--
作者：
K. Clay;D. Levin
对10个优势优势杂交群体和4个优势自交群体的20个数量性状的变异进行了研究。在温室里长成的南瓜。同时考虑所有性状的多变量方差分析表明，两个物种的群体间存在显著差异，而个体性状分析表明，19个性状的群体差异显著。鼓声和13个字符INP。平均而言，占总表型变异的16%。鼓单胞菌发生在种群之间，而在INP的总变异中不到4%。此外，群体内的家系间存在显著差异的频率要高于群体内的群体。大多数观察到的两个物种的变异都发生在环境和遗传来源不能被分割的科内。P有一种趋势。鼓鱼的遗传力高于P。即使对繁殖系统的假设放松了，对大多数性状也是不利的。因此，在温室环境中，远交种在种群间和种群内的家系间表现出比自交种更大的遗传差异。这些数据表明，P。这两个物种具有更大的进化潜力，并与种群结构的差异是由两个物种的繁育系统的差异造成的假设一致。
Variation of 20 quantitative characters was examined within and among 10 populations of the predominantly outcrossingPhlox drummondiiand 4 populations of the predominantly selfingP. cuspidatagrown in a greenhouse. Multivariate analysis of variance, considering all characters simultaneously, indicated that there were significant differences among populations in both species while analysis of individual characters demonstrated that there were significant population differences for 19 characters inP. drummondiiand 13 characters inP. cuspidata.On average, 16% of the total phenotypic variation inP. drummondiioccurred among populations compared to less than 4% of the total variation inP. cuspidata.In addition,P. drummondiiexhibited significant differences among families within populations more frequently thanP. cuspidata.Most observed variation in both species occurred within families where environmental and genetic sources of variation could not be partitioned. There was a trend forP. drummondiito have higher heritabilities thanP. cuspidatafor most characters even when assumptions about breeding systems were relaxed. Thus, the outbreeding species exhibited larger genetic differences among populations and among families within populations than the selfing species in the greenhouse environment. These data suggest thatP. drummondiihas the greater evolutionary potential of the two species and are consistent with the hypothesis that differences in population structure result from differences in the breeding systems of the two species.