Effect of Diameter Classes and Harvesting Intervals on Seed Bio-chemicals of Acer oblongum wall

Seeds collected from four different classes (D₁=<20.50 cm; D₂=20.51-30.50 cm; D₃= 30.51- 40.50 cm and D₄ =>40.51 cm) at six harvesting dates (Viz; C₁ = 30th Dec., C₂ = 15th Jan., C₃ = 30th Jan., C₄ = 15th. Feb., C₅ = 1st March and C₆ = 15th March) gave significant differences for different bio-chemical constituents viz; total, reducing, non-reducing sugars, total phenols, starch, total amino acids and soluble proteins. The combinations ofD₁C₆, D₂C₆, D₃C₆, and D₄C₆ registered the highest total and non-reducing sugars in their respective diameter classes. Whereas, harvesting date C₃ (30th Jan.) in all diameter classes recorded maximum content of starch, total phenols, soluble proteins and total amino acids. The present study suggested that C₃ (30th Jan.) was the best harvesting date irrespective of diameter classes in this species.