Institute of Evolutionary and Ecological Sciences, University of Leiden, PO Box 9516, 2300 RA Leiden, The Netherlands.
Trends Ecol Evol. 1997 Jul;12(7):260-5. doi: 10.1016/s0169-5347(97)01078-1.
There are conceptual and practical difficulties in measuring the exact shape of fitness-gain curves and sex allocation, and these hamper empirical testing of some of the basic predictions of sex allocation theory for plants. Nevertheless, our knowledge of the processes that shape fitness-gain curves allows us to formulate hypotheses to test predictions of sex allocation theory. One such hypothesis is that plants adjust their gender according to size. The connection between plant size and gender was generally thought to be weak. Recent data, however, suggest that size-dependent sex allocation (SDS) is a common phenomenon in hermaphrodites and other cosexual plants.
在衡量健身收益曲线和性别分配的确切形状方面存在概念和实践上的困难，这阻碍了对植物性别分配理论的一些基本预测的经验检验。然而，我们对塑造健身收益曲线的过程的了解使我们能够制定假设来检验性别分配理论的预测。其中一个假设是，植物根据大小调整性别。植物大小和性别之间的联系通常被认为很弱。然而，最近的数据表明，大小依赖的性别分配（SDS）是雌雄同体和其他有性植物中的一种常见现象。
