Author(s):

R Chandraprakash, P Masilamani, P Rajkumar, R Geetha, V Alex Albert and T Eevera

Abstract: An attempt was made to study the effect of specific gravity separation on seed germination and biochemical potential of castor hybrid YRCH 1 at AEC & RI, TNAU, Kumulur. The seeds were graded in a specific gravity separator viz., vertical height (cm), horizontal height (cm) and air blow rate (m³/hr) adjustments of 1, 0 and 7 respectively at 450 rpm. The seeds were upgraded into five grades viz; first to fifth designated as A, B, C, D, and E respectively (first grade represents low weight seeds and fifth grade represents high weight seeds). After grading, the seeds were subjected to for the following parameters viz; seed recovery percentage, 100 seed weight, seed filling percentage, germination percentage, speed of germination, seedling length (cm), dry matter production (g/10 seedlings), vigour index, field emergence per cent and bio chemical properties. The results revealed that higher germination per cent was recorded in the E grade (92 per cent) than A, B, C and D grades as well as F-ungraded bulk seeds. The estimation of storage reserves revealed that the variation existed among the grades separated by the specific gravity separator. The E grade seeds recorded higher protein, oil and carbohydrate contents, which was substantiated the higher germination, vigour and field emergence recorded by this grade of seeds.

Pages: 2369-2373  |  900 Views  362 Downloads

Download (642KB)