Effect of seed size and temperature treatments on germination of various seed sources of Pinus wallichiana and Pinus roxburghii from Garhwal Himalaya.

摘要

A study was conducted to determine the effect of hydrogen peroxide (H2O2) on germination of various provenances of Pinus wallichiana and P. roxburghii from Garhwal Himalaya (India), which had a significant effect on rate and average germination percentage. It was observed that H2O2 treatment decreased germination period of these species down to 8 days and 10 days, respectively. Therefore, seeds of these commercially important tree species should be pre-treated particularly with H2O2 1% v/v for 24 h to obtain optimum germination. The large sized seeds in P. wallichiana (mean germination percentage, 54.66%) and medium sized seeds in P. roxburghii (mean germination percentage, 93.33%) recorded favourable increase in germination under laboratory conditions..