Patterns of dormancy and germination in teak seeds collected from the farmland and forest plantations in Tamil Nadu, India

Abstract

In-vivo and in-vitro germination trials were done on the teak (Tectona grandis) seeds collected from a farmland and forest plantation in Tamil Nadu. Under in-vivo pot culture condition very low germination percent of drupes was observed in seed collected from plantation(Top slip) and famrland (Kumulur). When true seeds isolated from the drupes were grown under in vitro condition in half strength MS medium, the germination percent was significantly increased up to 63.3 per cent. True seed germination among two teak sources showed the presence of mechanical dormancy which was a major limiting factor for poor drupe germination for deployment of superior genetic materials.