Character Coherence in Natural Hybrid Populations in Plants
Character Coherence in Natural Hybrid Populations in Plants
复制标题
植物自然杂交群体的性状一致性
作者：
V. Grant
自然杂交人口仙人掌，虹膜，Aquilegia，Gilia，和棘豆检查或重新检查字符的连贯性。一致性存在于某些人群中，但不存在于其他人群中。根据标准理论，植物群体之间和种群之间的差异比预期的要大。对标准理论的重新评估揭示了三个导致高估一致性数量的缺陷：（1）未能从杂交群体样本中排除亲本类型的个体，（2）使用非定量的图形化散点图而不是相关系数，（3）假设选择总是有利于自然杂交群体中的亲本类型。提出了一个替代框架，承认更多的可变因素。人口与人口之间的差异，在自然杂交种群的字符连贯性可以占这种替代方法。
Natural hybrid populations in Opuntia, Iris, Aquilegia, Gilia, and Oxytropis are examined or reexamined for character coherence. Coherence is present in some but not in other populations. The differences between plant groups and between populations are greater than expected, according to the standard theory. A reassessment of the standard theory reveals three flaws leading to overestimates of the amount of coherence: (1) failure to exclude parental-type individuals from hybrid population samples, (2) use of non-quantitative pictorialized scatter diagrams rather than correlation coefficients, and (3) the assumption that selection will always favor the parental types in natural hybrid populations. An alternative framework recognizing more variable factors is proposed. Population-to-population differences in character coherence in natural hybrid populations can be accounted for with this alternate approach.