Influence of seed size grading and seed testing media on expression of seed quality in Parkia biglobosa

Abstract

Studies were made in Parkia biglobosa to standardise testing media for lab germination and also to evaluate the association of seed quality with seed size. The study revealed that in sand media the germinability of the seed was fully expressed compared to paper media. Seed quality in terms of germination and vigour were in close association with size, wherein the bigger seeds produced elite seedling and the smaller one, the seedlings of poor stamina. For obtaining good quality seedlings, seeds can be graded using 17/64" round perforated metal sieves of American sieve system (AST) and the retained seeds can be used for sowing.