The Investigation On Effect Of Seed Size On Germination Of Eucalyptus Species

The present study was conducted to investigate the effect of seed size of eucalyptus on germination. Open pollinated seeds of seven lots of Eucalyptus tereticornis and E. camaldulensis collected in 2013 from two provenance viz. Pudukottai and Karunuya were used in this study. The seed was graded in to three class viz., Grade I, Grade II and Grade III using sieves. Among all seed lots, the Grade III seed was largest class. The data revealed that seed size and weight had significant effect on seed germination. The Grade II seed can be used for production of uniform seedlings of eucalyptus. The sieve based grading method is simple and cost – effective method for grading of small seeds like Eucalyptus sp.