作者
Nicholas JB Brereton, Frederic E Pitre, Ian Shield, Steven J Hanley, Michael J Ray, Richard J Murphy, Angela Karp
发表日期
2014/11/1
期刊
Tree Physiology
卷号
34
期号
11
页码范围
1252-1262
出版商
Oxford University Press
简介
Minimizing nitrogen (N) fertilization inputs during cultivation is essential for sustainable production of bioenergy and biofuels. The biomass crop willow (Salix spp.) is considered to have low N fertilizer requirements due to efficient recycling of nutrients during the perennial cycle. To investigate how successfully different willow genotypes assimilate and allocate N during growth, and remobilize and consequently recycle N before the onset of winter dormancy, N allocation and N remobilization (to and between different organs) were examined in 14 genotypes of a genetic family using elemental analysis and 15N as a label. Cuttings were established in pots in April and sampled in June, August and at onset of senescence in October. Biomass yield of the trees correlated well with yields recorded in the field. Genotype-specific variation was observed for all traits measured and general trends spanning these sampling …
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NJB Brereton, FE Pitre, I Shield, SJ Hanley, MJ Ray… - Tree Physiology, 2014