Villalobos F, Bianchi G
Instituto Centroamericano de Biología y Conservación, Apartado 2398-2050 San Pedro de Montes de Oca, San José, Costa Rica.
Rev Biol Trop. 2000 Jun-Sep;48(2-3):587-9.
We examined if seed abortion in Guanacaste free fruits (Enterolobium cyclocarpum) is related to position within fruits, by establishing the abortion ratio in 150 fruits from 10 trees, collected in Santa Rosa National Park (Guanacaste, Costa Rica). Fruits were divided in basal, central and distal sections. We found marginal differences in abortion ratio between these sections (Anova, p = 0.058), and also among trees (p = 0.01). In general, the distal section had the greatest abortion ratio in relation to other sections. This abortion pattern could be caused by resource competition within siblings and not by genetic differences among them.
我们通过确定从圣罗莎国家公园（哥斯达黎加瓜纳卡斯特省）收集的10棵树上的150个果实的败育率，来研究瓜纳卡斯特无患子果实（象耳豆）的种子败育是否与果实内的位置有关。果实被分为基部、中部和远端部分。我们发现这些部分之间的败育率存在微小差异（方差分析，p = 0.058），并且在不同树木之间也存在差异（p = 0.01）。总体而言，远端部分相对于其他部分的败育率最高。这种败育模式可能是由同代种子间的资源竞争导致的，而非它们之间的遗传差异。
