Effects of submergence in water on seed germination and vigor of the Copaifera lucens(Fabaceae) seedlings

作     者：Daniela Baldez Vidal Isis Leite Andrade Eusinia Louzada Pereira Andrade Marcelo Schramm Mielke 

作者机构：Department of Agricultural and Environmental Sciences State University of Santa Cruz BR 415 km 16 Ilhéus 45662-300 Bahia Brazil Department of Biological Sciences State University of Santa Cruz BR 415 km 16 Ilhéus 45662-300 Bahia Brazil 

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

年 卷 期：2014年第25卷第4期

页      面：903-908页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：the Foundation for Research Support of the State of Bahia (FAPESB) 

主　　题：Copaiba Brazilian Atlantic Forest forest restoration germi-nation vigor 

摘      要：We analyzed the tolerance of Copaifera lucens seeds to sub- mersion in water to assess the use of this species for direct seeding in riparian forest restoration programs. Seeds were submerged in water for 2, 4, 8, 16 and 32 days or not submerged （control = 0 days of submer- gence）. For the control and at the end of each period of submersion, germination and seedling vigor tests were carried out. For germination tests, seeds were sown in plastic pots containing sand and kept in labora- tory conditions. The percentage of seed germination, the germination rate and the average germination time were analyzed. For seedlings, total biomass, leaf area, leaf mass per area and leaf area ratio were analyzed. Submersion time drastically affected the dissolved oxygen content and seed germination. Between 4 and 8 days of submersion there was a de- crease from 83.8% to 15.6% in the germination percentage. No seed germination occurred after 16 days of submersion. Although there was a significant decrease in the percentage of seed germination between 4 and 8 days of submersion, seedling vigor was not affected. Seeds of this species were partially tolerant to submersion in water, suggesting that C. lucens is a promising species for direct seeding in riparian forest restora- tion projects.