长白山区南部黄刺玫花构件的结构及生长分析

Structure and Growth of Floral Module of Rosa xanthina in Changbai Mountain Area

采用大样本、随机取样的方法,调查了黄刺玫花构件生物量及花径大小等形态特征,分析了4个不同空间方位黄刺玫花的生长规律。结果表明:不同空间方位黄刺玫花构件有着相似的数量特征。花托+花蕊生物量的变异系数均大于花被。花径大小与花生物量、花被生物量之间均有着密切的正相关关系,其相关程度最佳的均为指数函数,并且随着花径的增加,不同空间方位花生物量、花被生物量在增长速度上均存在差异;花生物量和花被生物量都存在着表型可塑性,但相同的函数变化蕴涵着不同空间方位具有相同的形成规律;在不同空间方位黄刺玫花被生物量和花生物量之间均有着密切的正相关关系,其相关程度最佳的均为线性函数。随着花生物量的增加,不同空间方位花被生物量在增长速度上存在差异。

Big-sample method and random sampling method were used to investigate the biomass of floral module and the floral diameter of Rosa xanthina in Changbai Mountain Area. The growth regularities of R. xanthina flowers in four different directions were compared. Results showed that there is a similar quantitative characteristic of R. xanthina module in the east, south, west, north directions. The variable coefficient of the total biomass of receptacle and stamen is larger than that of the floral envelope. There is a positive correlation between the floral diameter and the biomasses of floral envelope and flower in different directions. The optimal correlative relationship could be expressed by exponential function. Differences in the growing speed of biomasses of floral envelope and flower in different directions were found with the floral diameter increasing. The biomasses of flower and floral envelope have phenotypic plasticities, but there is a same forming rule in different directions judging from the same function relationship. A closely positive correlation was also found between the biomasses of floral envelope and flower of R. xanthina in different directions. The best correlation relationship could be revealed by the linear function. There are differences in the growing speed of floral envelope biomass from different directions with the flower biomass increasing.