Abstract
Genetics: Most Corchorus species are diploids with 2n = 14, while wild species like, C. cunninghamii, C. hirtus, C. junodii, and C. siliquosus are similar in chromosome structure and are tetraploids (Belay, 2011). C. hirtus has a chromosome number 2n=4x=28 (Sinha et al., 2011; Flora of North American Editorial Committee, 2016). Physiology and Phenology: C. hirtus flowers and fruits all year (Axelrod, 2011). The flowers are bright yellow and 1.5 cm wide, and open in the afternoon (Missouri Botanical Garden, 2016). Reproductive Biology: Most Corchorus species can be identified during the reproductive stage using capsule and seed morphology (Belay, 2011). Seed is the main medium of reproduction (Mascarenhas et al., 1995). Ideal germination conditions in the laboratory have been found to be 31°C, 12/12 meaning seeds were incubated at 31°C during 12 light hours (Royal Botanical Gardens Kew, 2008). Environmental Requirements: C. hirtus needs a tropical climate to grow but it is also present in some southern states of the USA including Arizona, Alabama and Florida. It is usually found in deciduous tropical forests, semi-deciduous and evergreen tropical forests. It prefers soils that are well drained and mostly calcareous (Mas and Lugo-Torres, 2013).