文献类型：期刊文献

英文题名：Genetic variations and correlation analysis of N and P traits in Pinus massoniana under combined conditions of N deposition and P deficiency

作者：Hu, Chenyang[1,2,3] Zhao, Lei[1] Zhou, Zhichun[2] Dong, Guoqing[3] Zhang, Yi[1,2]

第一作者：Hu, Chenyang

通信作者：Zhang, Yi

机构：[1] Northwest Agriculture and Forestry University, Yangling, Shanxi, 712100, China; [2] Research Institute of Subtropical Forestry, Chinese Academy of Forestry, 73#, Daqiao Road, Fu Yang, Zhe Jiang, China; [3] Wuhan Polytechnic University, Wuhan, Hubei, 4300232, China

年份：2016

卷号：30

期号：4

起止页码：1341-1350

外文期刊名：Trees - Structure and Function

收录：EI(收录号：20161102094510);Scopus(收录号：2-s2.0-84960081184)

语种：英文

外文关键词：Ecosystems - Soils - Nitrogen - Forestry - Phosphorus

摘要：Key message: Significant genetic variations in N and P nutritional traits exist under combined conditions of soil P deficiency and N deposition and interactively contribute to growth benefits. Abstract: Forest ecosystems encounter combined conditions of soil phosphorus (P) deficiency and atmospheric nitrogen (N) deposition. As such, determining genetic variations and interactions of N and P nutritional traits is important for silviculture. Low N (LN) and high N (HN) were combined with three P treatments in a pot experiment with five full-sib families of Masson pine (Pinus massoniana). The three P treatments are: low P in soil profile (low-P condition, LP), enriched P in topsoil and poor P in subsoil (medium–low-P condition, MLP), and high P in soil profile (high-P condition, HP). P acquisition was more significant for growth benefits than P utilization under LP. Growth response to N was higher under MLP and HP than that under LP because of more balanced plant N:P ratios in the two former conditions. Under HN, there were significant correlation between nitrogen acquisition efficiency (NAE) and phosphorus use efficiency (PUE) and they interactively contributed to growth promotion under N deposition. Significant genetic variations, as well as large heritability of growth and N and P nutritional traits, were detected under all N–P conditions. This finding indicated the feasibility of breeding families with improved nutrient efficiency under N–P conditions. ? 2016, Springer-Verlag Berlin Heidelberg.