Date Available
12-7-2011
Year of Publication
2004
Document Type
Thesis
College
Arts and Sciences
Department
Biology
First Advisor
Carol Baskin
Second Advisor
Jerry Baskin
Abstract
The Panama Canal Watershed (PCW) represents a special opportunity for studies related to seed dormancy in the tropics with both applied and basic research objectives. There is a clear need for seed information for nursery planning in restoration projects that involves use of a large number of local species. Moreover, the strong rainfall gradient along the 60 km of continuous lowland forest in the PCW represents an excellent opportunity to understand dormancy and its role as an adaptive trait that evolved in response to environmental factors. This study presents useful seed information for 100 tree species native to the PCW. For each species, it includes collection system, fruiting time, seed mass, seed moisture content, germination, and longevity in storage at 20??C. For the first time, an attempt is made to classify (to class sensu Baskin andamp; Baskin 2004) the class of dormancy in seeds of the PCW. An analysis of the relationship between class of dormancy and seed mass, moisture content, longevity, germination patterns, and seasonality is presented. The relationship between class of seed dormancy and longevity and geographical distribution of species within the watershed based on the rainfall gradient was investigated.
Recommended Citation
Sautu, Adriana Elena, "ECOLOGY, MORPHOLOGY, AND GERMINATION PHYSIOLOGY OF TREE SEEDS IN A TROPICAL SEMIEVERGREEN FOREST IN THE PANAMA CANAL WATERSHED, WITH SPECIAL REFERENCE TO SEED DORMANCY CLASSES ALONG A PRECIPITATION GRADIENT" (2004). University of Kentucky Master's Theses. 206.
https://uknowledge.uky.edu/gradschool_theses/206
