Spatial Genetic Structure in Three Populations of Hemerocallis hakuunensis (Liliaceae)

Hemerocallis hakuunensis(Liliaceae)三種族群之基因構造的地域分佈

Myong Gi Chung

《Botanical Bulletin of Academia Sinica》 41卷3期 (2000/07) Pp. 231-236

https://doi.org/10.7016/BBAS.200007.0231

摘要

分別來自Hemerocallis hakuunensis之三種族群，即[MIM]、[KOS]及[NOD]的99、75和71體個被定位且收集其葉試樣以推算是否從其生態特性之參數可看出此三族群之基因構造的地域分佈。從MIM可發現相當程度之基因構造的地域分佈，但NOD及KOS者則較弱。在MIM之260個案例中有137個(佔52.7%)其Moran'sI值和期望值(-0.010)有顯著不同，NOD240個案例中之25個(佔10.4%)，KOS270個案例中之55個(佔20。4%)有顯著之Moran'sI值。粗估之minimum patch width在三族群也不同，即：NOD=3m,MIM=5m及KOS=10m。此patch width之差異可能是密度，棲地繁殖歷史，肖減過程或若干其他因子在三族群間之不同所導致。

關鍵字

異構酶 ； 密度 ； Hemerocallis hakuunensis ； Moran'sI ； 地域自相關

並列摘要

Ninety-nine, 75, and 71 individuals were mapped and leaf samples were collected from three populations (10×15-m plot [MIMI, 40×50-m plot [KOS], and 15×20-rn plot [NOD]) of Hemerocallis hakuunensis to determine if spatial genetic structure existed in the three populations in terms of their ecological characteristics. A substantial spatial genetic structuring was found in MIM, whereas a weak structure was observed in NOD and KOS. Moran's I values were significantly different from the expected value (-0.010) in 137 (52.7%) of 260 cases in MIM, whereas significant Moran's I values were observed in 25 (10.4%) of 240 cases and 55 (20.4%) of 270 cases in NOD and KOS, respectively. The approximate minimum patch width also varied among the three populations: NOD=3m, MIM=5m, and KOS=10m. The differences in patch width may result from the differences in density, colonization history, thinning processes or any of a number of other factors among populations.

並列關鍵字

Allozymes ； Density ； Hemerocallis hakuunensis ； Moran's I ； Spatial autocorrelation.