ABSTRACT
Pollination is necessary for fruit and seed production in most flowering plants, but once it has occurred, a host of other factors act to determine eventual seed output, among them plant size and form. The overall relationship of plant size and form to seed production can be analyzed by examining the effects of each type of component. This chapter describes a study of the relationships between plant form and seed and fruit production in Collinsortia verticillata I. T. Baldwin ex Ell. The effects of plant form on seed output in Collinsonia verticillata were fairly easily to estimate because plants of this species have relatively simple gross structure. However, multiple regression and path analysis can be applied to more complicated plant forms. Although some plant traits had significant effects on seed output per plant, pollination appeared to be more important than plant form in determining seed yield in C. verticillata.
