Intra- and Inter-Plant Level Correlations among Floral Traits in Iris Gracilipes (Iridaceae)
Intra- and Inter-Plant Level Correlations among Floral Traits in Iris Gracilipes (Iridaceae)
复制标题
DOI：
10.1007/s10682-005-0896-1
复制
发表时间：
2005-09
影响因子：
1.9
通讯作者：
H. Ishii;S. Morinaga
中科院分区：
文献类型：
--
作者：
H. Ishii;S. Morinaga
尽管一株植物内的花的大小各不相同，但迄今为止很少有研究在植物内部水平上研究花性状之间的相关性。多效性基因的变异或基因的连锁不平衡被认为在植物间水平上在某些性状组合之间比其他性状组合之间产生更大的相关性，但不能预测植物内水平的相关性。本研究从株内和株间两个层面研究了鸢尾花粉粒和胚珠数量、体积等花性状组合之间的相关性。株内水平相关模式与株间水平相关模式基本一致，但存在一些例外；在两个水平上，功能相关性状之间的相关性都大于其他性状。例如，在两个水平上，萼片与花瓣大小、花瓣花柱与花丝长度的相关性都很大。这可以用某些性状组合之间的遗传和发育关系来解释，而不是用单个植物特有特性的（co）变异（如遗传变异）来解释。
Although the sizes of individual flowers within one plant vary, few studies to date have investigated correlations among floral traits at the intra-plant level. Variations of the pleiotropic genes or linkage disequilibrium of genes, those have been said to create larger correlations between some combinations of traits than others at the inter-plant level, cannot predict intra-plant level correlations. In this study, correlations between several combinations of floral traits, including the number and volume of pollen grains and ovules, were investigated at both intra- and inter-plant levels inIris gracilipes.The pattern of intra-plant level correlations was similar to that of inter-plant level correlations with some exceptions; correlations between functionally related traits tended to be larger than others at both levels. For example, correlations between sepal and petal size, and between petaloid style and filament length were large at both levels. This may be explained by the genetic and the developmental relationships between some combinations of traits, rather than by (co)variations of the peculiar properties of the individual plants such as genetic variations.