Arid
DOI10.1016/j.biombioe.2017.06.014
Salinity tolerance of three Salix species: Survival, biomass yield and allocation, and biochemical efficiencies
Major, John E.; Mosseler, Alex; Malcolm, John W.; Heartz, Shane
通讯作者Major, John E.
来源期刊BIOMASS & BIOENERGY
ISSN0961-9534
EISSN1873-2909
出版年2017
卷号105页码:10-22
英文摘要

Salinity tolerance is an important adaptive trait for land reclamation, particularly after petroleum extraction from the Athabasca oil sands "gigaproject" in western Canada. We compared survival, biomass yield and allocation, and biochemical efficiency for three willow species: Salix discolor (DIS), S. eriocephala (ERI), and S. interior (INT) grown under control (CTL) and medium and high salinity treatments (MST and HST, target EC = 1.5 and 3.0 mS cm(-1), respectively). In HST, all DIS and ERI plants died, but 33% of INT plants survived. For DIS and ERI, total aboveground (AG) dry mass decreased from CTL to MST, whereas for INT, AG dry mass increased slightly in MST and also increased further in HST. Stem length was not influenced by salinity treatment; however, there was a significant treatment x species interaction for basal diameter resulting from a basal diameter decrease in DIS and ERI and increase in INT with increasing salinity. Maximum rate of carboxylation and electron transport showed equal or greater values for DIS and ERI in MST compared with CTL, but INT displayed a greater stimulation (1.3x) in the MST and HST. Across species and salinity treatments, corresponding biochemical efficiency traits showed a significant positive relationship to total AG dry mass, strongly supporting the theory of sink regulation of photosynthetic capacity. All final biomass and survival traits had significant genotype or genotype x salinity treatment interactions, but only one such effect was found for biochemical efficiency traits. The saline tolerance of INT may be due to natural selection in the arid regions of the southwest USA, where it is thought to have its evolutionary origins. Crown Copyright (C) 2017 Published by Elsevier Ltd. All rights reserved.


英文关键词Biomass allocation and yield Fitness Genotypic variation Salinity tolerance Survival Willow species
类型Article
语种英语
国家Canada
收录类别SCI-E
WOS记录号WOS:000410709100002
WOS关键词ELEVATED CO2 ; PICEA-MARIANA ; GENETIC-VARIATION ; PHOTOSYNTHESIS ; GROWTH ; RESPONSES ; WILLOWS ; CANADA ; SITES ; WATER
WOS类目Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS研究方向Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197871
作者单位Canadian Forest Serv, Nat Resources Canada, Atlantic Forestry Ctr, POB 4000, Fredericton, NB E3B 5P7, Canada
推荐引用方式
GB/T 7714
Major, John E.,Mosseler, Alex,Malcolm, John W.,et al. Salinity tolerance of three Salix species: Survival, biomass yield and allocation, and biochemical efficiencies[J],2017,105:10-22.
APA Major, John E.,Mosseler, Alex,Malcolm, John W.,&Heartz, Shane.(2017).Salinity tolerance of three Salix species: Survival, biomass yield and allocation, and biochemical efficiencies.BIOMASS & BIOENERGY,105,10-22.
MLA Major, John E.,et al."Salinity tolerance of three Salix species: Survival, biomass yield and allocation, and biochemical efficiencies".BIOMASS & BIOENERGY 105(2017):10-22.
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