方位及冠层对厚朴果实和种子形态变异的影响

为从方位及冠层的角度探讨光照对厚朴(Magnolia officinalis)果实和种子形态变异的影响,分别从植株的不同方位和冠层采集果实、种子,并测定其形态指标。结果表明,方位对厚朴果实和种子的形态变异影响显著,不同方位厚朴果实和种子的表型性状表现为南方位和东方位优于西方位,南、东和西3个方位均优于北方位;冠层对厚朴果实和种子的形态变异影响显著,不同冠层果实和种子性状表现为中冠层优于上冠层,上冠层优于下冠层;方位和冠层对厚朴果实和种子多项形态指标的协同作用不显著。与果实相比,种子的表型性状更稳定。

Effects of Orientation and Canopy on Deformation of Fruits and Seeds of Magnolia officinalis

Effect of light,as affected by orientation and canopy,on deformation of fruits and seeds of Magnolia officinalis was explored through analysis of fruits and seeds collected from different positions or bearings of the canopy of M.officinalis trees for phenotypic index.Results show that the effect of orientation is significant,making the fruits and seeds in the south and east of the canopy better than those in the west in phenotypic shape,and those in the north the poorest.The effect of position in the canopy is also significant.The fruits and seeds growing in the middle layer of the canopy are better than those in the top layer,and much better than those in the bottom layer.No significant synergistic effect of orientation and canopy is found.Compared with fruits,seeds are stabler in phenotypic character.