Growth responses of seedlings produced by parent seeds from specifi caltitudes  

作　　者：Valasia Iakovoglou Ioannis Takos Georgia Pantazi Aikaterini Pipsou Maria Neofotistou 

机构地区：[1]Department of Forestry and Natural Environment Management,Eastern Macedonia and Thrace Institute of Technology(EMaTTECH),66100 Drama,Greece

出　　处：《Journal of Forestry Research》2020年第6期2121-2127,共7页林业研究（英文版）

摘　　要：Restoration activities in semi-arid Mediterranean areas like Greece face many obstacles,such as summer droughts that are becoming more intense with climate change,that pose limitations to transplanting success.Seedlings for restoration must be of high quality;a vigorous root system is critical to enable seedlings to tolerate adverse conditions.Here we investigated the eff ects of altitude and source parent for seeds on the growth of subsequent seedlings to determine the best seed sources for obtaining highest-quality,most-tolerant seedlings for restoration eff orts.Seeds of Quercus coccifera L.were collected on an altitudinal gradient of 50 m(200,250 and 300 m a.s.l.)and from specifi c parents at each altitude.Subsequent seedlings were grown for 3 months in a greenhouse with controlled irrigation.The results indicated a strong altitudinal and parental seed eff ect on seedling characteristics.As altitude decreased,biomass of the seedlings increased,and they developed more vigorous roots and more photosynthetic leaf tissue.Thus,altitude and parent are critical factors to consider when producing seed-derived seedling.By collecting seeds from a specifi c altitude and parent,more vigorous and stresstolerant seedlings can be obtained to enhance transplanting success.

关 键 词：Climate change CONSERVATION Nursery practices Regeneration Seedling physiology 

分 类 号：S723[农业科学—林木遗传育种]