Zalesny Ronald S, Bauer Edmund O
USDA Forest Service, Northern Research Station, Institute for Applied Ecosystem Studies, Rhinelander, Wisconsin 54501, USA.
Int J Phytoremediation. 2007 Nov-Dec;9(6):497-511. doi: 10.1080/15226510701709689.
The success of using Populus and Salix for phytoremediation has prompted further use of leachate as a combination of irrigation and fertilization for the trees. A common protocol for such efforts has been to utilize a limited number of readily-available genotypes with decades of deployment in other applications, such as fiber or windbreaks. However, it may be possible to increase phytoremediation success with proper genotypic screening and selection, followed by the field establishment of clones that exhibited favorable potential for cleanup of specific contaminants. There is an overwhelming need for testing and subsequent deployment of diverse Populus and Salix genotypes, given current availability of clonal material and the inherent genetic variation among and within these genera. Therefore, we detail phyto-recurrent selection, a method that consists of revising and combining crop and tree improvement protocols to meet the objective of utilizing superior Populus and Salix clones for remediation applications. Although such information is lacking for environmental clean-up technologies, centuries of plant selection success in agronomy, horticulture, and forestry validate the need for similar approaches in phytoremediation. We bridge the gap between these disciplines by describing project development, clone selection, tree establishment, and evaluation of success metrics in the context of their importance to utilizing trees for phytoremediation.
利用杨树和柳树进行植物修复的成功促使人们进一步将渗滤液用作树木的灌溉和肥料。此类工作的一个常见方案是利用数量有限的、在纤维或防风林等其他应用中已使用数十年的现成基因型。然而，通过适当的基因型筛选和选择，随后在田间培育出对特定污染物具有良好净化潜力的克隆植株，可能会提高植物修复的成功率。鉴于目前克隆材料的可用性以及这些属内和属间固有的遗传变异，迫切需要对各种杨树和柳树基因型进行测试并随后进行部署。因此，我们详细介绍了植物轮回选择法，该方法包括修订和结合作物与树木改良方案，以实现利用优良杨树和柳树克隆进行修复应用的目标。尽管环境清理技术缺乏此类信息，但农学、园艺学和林业数百年的植物选择成功经验证明了植物修复中采用类似方法的必要性。我们通过描述项目开发、克隆选择、树木培育以及成功指标评估（鉴于它们对利用树木进行植物修复的重要性）来弥合这些学科之间的差距。
