Restricted pollen flow of two woodland herbs determined by neutron-activation analysis
Restricted pollen flow of two woodland herbs determined by neutron-activation analysis
复制标题
通过中子活化分析确定两种林地草本植物的花粉流受限
作者：
S. Handel
花粉的移动是风媒植物群体遗传学中的一个关键事件。邻居的大小和遗传分化的潜力，例如，显着影响花粉飞行距离1，2。增强风授粉的物候学和形态学机制的演变是很好的研究3，4，但在自然种群的花粉飞行的实际距离不太清楚地记录。花粉运动已经通过在野外使用遗传标记来估计5，用人工障碍物捕获花粉6，以及捕获放射性同位素和化学标记的针叶树花粉7 -9。我报告的成功测量风散花粉在自然种群的林地草本植物，使用中子活化分析的表面处理的花粉。初步结果表明，高度限制花粉运动在这些草药。
THE movement of pollen is a critical event in the population genetics of wind-pollinated plants. Neighbourhood size and potential for genetic differentiation, for example, are significantly influenced by pollen flight distances1,2. The evolution of phenological and morphological mechanisms that enhance wind pollination is well studied3,4, but the actual distance of pollen flight in natural populations is less clearly documented. Pollen movements have been estimated by using genetic markers in field plots5, trapping pollen with artificial barriers6, and catching radioisotope- and chemically-marked pollen of conifers7–9. I report the successful measurement of wind-dispersed pollen in natural populations of woodland herbs, using neutron-activation analysis of surface-treated pollen. Preliminary results suggest highly restricted pollen movement in these herbs.