Accumulation and concentration of nitrogen, phosphorus and potassium in Jerusalem artichoke in a semi-arid region
文献类型： 外文期刊
第一作者： Fu, Tongcheng
作者： Fu, Tongcheng;Liu, Zuxin;Yang, Yang;Xie, Guang Hui;Fu, Tongcheng;Liu, Zuxin;Yang, Yang;Xie, Guang Hui;Liu, Zuxin
作者机构：
关键词： Nutrient uptake; bio-fuel; biomass crop; forage crop
期刊名称：ITALIAN JOURNAL OF AGRONOMY （ 影响因子：2.3； 五年影响因子：1.773 ）
ISSN： 1125-4718
年卷期： 2018 年 13 卷 3 期
页码：
收录情况： SCI
摘要： Jerusalem artichoke (Helianthus tuberosus L.) has been recognized as being a biomass crop for energy and livestock forage production. In this study, 26 Jerusalem artichoke clones previously collected from 24 provinces of China were grown under semiarid conditions in 2008 and 2011. At harvest, nitrogen (N), phosphorus (P) and potassium (K) concentrations and accumulations were measured for all clones and levels of both were higher overall for 2008 than 2011, with statistically reasonable results for both years. Notably, N and K concentrations in aboveground parts were higher than in tubers for most clones, yet the tuber P concentration was consistently higher than in aboveground parts. Comparing with other forage and energy plants, it demonstrates that under optimal conditions, diverse Jerusalem artichoke clones could meet the requirements of either energy production or livestock forage feed. Based on N, P and K accumulation and concentration profiles, the 26 Jerusalem artichoke clones clustered into six groups. Three clones of one cluster, CQ-1, GZ-1 and HUN-3, are reconunended for use as biomass energy materials due to the lower N concentration level in aboveground parts and higher N concentration level in tubers, while 16 clones are recommended for use as forage due to the higher N concentration level in aboveground parts. The phenotypic traits described in this work should facilitate quantitative trait locus mapping and the subsequent use of clone germplasms for development of improved varieties suited to specific growth conditions and applications.
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