Effect of ageing on in vitro true seed and in vivo drupe germination and its dormancy mechanism in teak (Tectona grandis Linn.f)

The germination percentage of teak seed is generally very poor due to its higher empty and viability. viable seeds exhibit protracted behaviour their inherent dormancy other physiochemical characteristics. Hence establishing a nursery for largescale plantation activities challenging task. This study was undertaken the effect ageing on in vitro true vivo drupe mechanism teak. Fresh, one-year two-year stored drupes were used represent different levels ageing. Under conditions, observed fresh (3%) increased when subjected one year (17%) or two years (32%). When separated from germinated under enhanced (58.3%) observed. Biochemical analysis showed that indole-3- acetic acid, indole butyric abscisic acid coumarin are not present fresh, two-year-old seeds. gibberellic with an increase ageing, but GA3 did influence percent conditions. Scanning electron microscope (SEM) image embryo tip shrivelled, whereas bulged; this confirmed embryos matured satisfied after-ripening requirement. Nursery studies revealed recorded highest compared drupes.