Evolution of floral dimorphism in a cleistogamous annual, Impatiens noli-tangere L. occurring under different environmental conditions
Evolution of floral dimorphism in a cleistogamous annual, Impatiens noli-tangere L. occurring under different environmental conditions
复制标题
DOI：
10.1111/j.1440-1703.2004.00673.x
复制
发表时间：
2004-11-01
影响因子：
2
通讯作者：
Maki, M
中科院分区：
文献类型：
--
作者：
Masuda, M;Yahara, T;Maki, M
以四个自然居群的凤仙花为材料，研究了闭花受精和裂花受精混合花生产演化的资源分配模型。当我们将估计的参数值纳入我们的基本模型时，假设环境条件在生殖季节没有变化，该模型预测了所有四个种群的专性裂殖。然而，在模型中考虑到裂花受精的育性波动，裂花与闭花受精的花产量的季节转换成为一种进化稳定策略，解释了两个种群中个体的生殖行为。只有在模型中考虑了裂花异花受精与裂花产生数量之间的关系后，两种二型花的同时产生才成为一种进化稳定策略。此外，完整的模型阐明了其他两个群体中的个体的生殖行为。
The resource allocation models for the evolution of a mixed production of cleistogamous and chasmogamous flowers were tested in four natural populations of Impatiens noli-tangere L. When we incorporated the estimated parameter values into our basic model, under the assumption that the environmental conditions did not change through the reproductive season, the model predicted the obligate chasmogamy in all four populations. However, including the fluctuation of the fertility of chasmogamous flowers in the model, the seasonal switching of chasmogamous and cleistogamous flower production becomes an evolutionary stable strategy, which explains the reproductive behavior of the individuals in two populations. Only after the relationship between the geitonogamy of chasmogamous flowers and the number of chasmogamous flower production was considered in the model did the simultaneous production of both of the dimorphic flowers become an evolutionary stable strategy. Further, the complete model clarifies the reproductive behavior of the individuals in the other two populations.