Male phenology of three species of Cupressus:: correlation with airborne pollen
Male phenology of three species of Cupressus:: correlation with airborne pollen
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DOI：
10.1007/s00468-002-0243-x
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发表时间：
2003-07-01
影响因子：
2.3
通讯作者：
Domínguez, E
中科院分区：
文献类型：
--
作者：
Hidalgo, PJ;Galán, C;Domínguez, E
对科尔多瓦市（西班牙）柏木属的代表性物种：Cupressus arizonica、C. macrocarpa 和 C. sempervirens 进行了为期 3 年的雄性物候实地研究。获得了柏木雄花物候阶段的新的、完整的描述。使用内部和外部芽/花性状描述了五个物候阶段。一般来说，这三年记录了不同的授粉期。 C. arizonica 比其他植物早 20 至 23 天开花。 C. macrocarpa 和 C. sempervirens 几乎同时开花，尽管前者开花稍早一些。每平方公里的树木总数是根据城市及周边地区（距市中心 5 公里半径）各树种的总数来估算的。与每棵树的花粉总产量相对应的数据取自之前的一项研究，其中估计了每个物种对大气花粉的部分贡献。考虑到所有这些参数，提出了一个理论空气传播花粉模型。将该模型与过去 18 年的平均空气花粉浓度进行比较，得出相关系数 (R-2) 为 0.46。根据提出的模型，C. macrocarpa 树占空气传播花粉总量的 78%，而 C. sempervirens 和 C. arizonica 分别仅占 18% 和 4%。这项研究的最终目标是提供有关地中海地区冬季花粉病的这些物种的更多生物学信息。预测花粉排放和扩散在公共卫生预警中具有重要应用。
A 3-year male phenological field study was performed on the represented species of the genus Cupressus in the city of Cordoba (Spain): Cupressus arizonica, C. macrocarpa and C. sempervirens. A new and complete description of the phenological stages of the male flower of Cupressus was obtained. Five phenological phases were described using internal and external bud/flower traits. In general, different pollination periods were recorded for the 3 years. C. arizonica flowered from 20 to 23 days before the others. C. macrocarpa and C. sempervirens flowered almost simultaneously, although the former appeared to flower slightly earlier. The total number of trees per square kilometre was estimated taking into account the total number of trees of each species in the city and surrounding area (5 km radius from the city centre). Data corresponding to total pollen production per tree were taken from a previous study in which the partial contribution of each species to atmospheric pollen was estimated. Considering all these parameters, a theoretical airborne pollen model was proposed. A correlation coefficient (R-2) of 0.46 was obtained when comparing this model with the average airborne pollen concentrations for the last 18 years. According to the proposed model, C macrocarpa trees accounted for 78% of total airborne pollen, while C. sempervirens and C. arizonica accounted for only 18% and 4%, respectively. The final objective of this study was to provide additional biological information on these species responsible for winter pollinosis in the Mediterranean area. Forecasting pollen emission and dispersion has an important application in public health warnings.