SOME EVIDENCE FOR THE CAUSE OF EPICORMIC SPROUTING IN BLUE MAHOE (<em>HIBISCUS</em> <em>ELATUS</em> SW.) IN THE MOIST LIMESTONE REGION OF PUERTO RICO

Abstract

It has been generally thought that all growth deformities of blue mahoe (Hibiscus elatus Sw.) could be attributed to hybridization with seaside mahoe (Hibiscus tiliaceus L.). We here suggest that there are many factors causing these deformities and all could be inter-related. Previous studies provide evidence that epicormic bud number is genetically determined. Our study on the blue mahoe species demonstrates that subcanopy light is the release trigger for their development. Our observations indicate that site and stand density could effect stem quality (multi-forking at the base of the bole and straightness). These two factors can be considered along with past historical records that show wind and disease as well as hybridization all play a role in stem form development.