Effect of pre-soaking and pre-chilling treatments on seed germination of Pinus roxburghii provenances from western Himalaya, India

作     者：Sunil Kumar Ghildiyal Chandra Mohan Sharma Vinod Prasad Khanduri Sunil Kumar Ghildiyal;Chandra Mohan Sharma;Vinod Prasad Khanduri

作者机构：Department of Botany HNB Garhwal University Department of Forestry Mizoram University 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2009年第20卷第4期

页      面：323-330,I0005页

核心收录：

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：suportted by the Indian Council of Forestry Research and Education (ICFRE) Dehradun 

主　　题：seed germination seed sources provenances temperature GA3 H2O2 chilling chit pine Pinus roxburghii Himalaya 

摘      要：After subjecting the seeds to GA3 and H2O2 treatments for 24 h and chilling at 2-3℃ for a period of 15 days, we conducted the seed germination tests for 21 different seed sources ofPinns roxburghii from western-central Himalaya under laboratory conditions at various temperatures viz., 20℃, 25℃ and 30℃ inside a seed germinator. The results reveal that the soaking of seeds in H2O2 （1% v/v） and GA3 （ 10 mg.L^-1） solutions manifested 82.39% and 78.19% germination, respectively whereas untreated seeds exhibited 70.79% average germination. Both GA3 and H2O2 treatments caused an appreciable shortening of the germination period by 8 days and 10 days, respectively. Moist-chilling did improve the rate and percentage of germination when germinated at 20℃ over 21 days; however total germination was not affected at temperatures 25℃ and 30℃, Although the seeds of P. roxburghii germinate well due to lack of dor- mancy, the increasing demand for large quantities of seeds of P. roxburghii for reforestation programmes make pre-sowing treatments useful in improving the rate and percentage of gemaination.