Arid
DOI10.5424/sjar/2014124-5495
Assessment of the viability of using saline reclaimed water in grapefruit in medium to long term
Romero-Trigueros, Cristina; Nortes, Pedro A.; Pedrero, Francisco; Mounzer, Oussama; Alarcon, Juan J.; Bayona, Jose M.; Nicolas, Emilio
通讯作者Romero-Trigueros, Cristina
来源期刊SPANISH JOURNAL OF AGRICULTURAL RESEARCH
ISSN1695-971X
出版年2014
卷号12期号:4页码:1137-1148
英文摘要

Citrus trees are strongly affected by salinity, especially in countries where irrigation is required as a semi-arid Mediterranean agronomic region. The aims of the study were i) to identify the best reliable plant-based water status indicator for field grown grapefruit trees irrigated with saline reclaimed water during five years of cultivation by measuring seasonal changes in physiological parameters (i.e. gas exchange and stem water potential measurements), leaf structural traits (i.e. leaf chlorophyll content, area-based leaf nitrogen and area-based dry mass), phytotoxic elements and yield; ii) to estimate phytotoxicity thresholds at leaf level. Our results showed that the chlorophyll content was the parameter with the highest number of measures with significant differences (p <= 0.05, ANOVA) between trees irrigated with reclaimed water and control trees throughout growing stages. Moreover, Chl a increased linearly with area-based leaf nitrogen (R-2 = 0.63; p < 0.001) and area-based dry mass (R-2 = 0.64; p < 0.001). We also determined the salt-induced phytotoxicity thresholds at which a reduction in yields occurs; these levels were Na: 0.1 g/100 g, Cl: 0.6 g/100 g and B: 100 ppm. In conclusion, we revealed the importance of leaf chlorophyll measurements as a significance diagnostic indicator of salt stress on field grown grapefruit trees. This parameter was also related to plant-based water status indicators such as stem water potential, stomatal conductance and net photosynthesis. Additionally, a salt accumulation potential at leaf level was shown, leading to possible risk in crop sustainability in the medium to long term.


英文关键词chlorophyll gas exchange measurements irrigation phytotoxic elements plant water status saline reclaimed water yield
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000346393700027
WOS关键词LEAF GAS-EXCHANGE ; DEFICIT IRRIGATION ; SALT TOLERANCE ; 2 ROOTSTOCKS ; CHLOROPHYLL CONCENTRATION ; CITRUS SEEDLINGS ; VALENCIA ORANGE ; MODERATE SHADE ; ALMOND TREES ; SWEET ORANGE
WOS类目Agriculture, Multidisciplinary ; Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/185072
作者单位Ctr Edafol & Biol Aplicada Segura CEBAS CSIC, Dept Riego, Espinardo 30100, Murcia, Spain
推荐引用方式
GB/T 7714
Romero-Trigueros, Cristina,Nortes, Pedro A.,Pedrero, Francisco,et al. Assessment of the viability of using saline reclaimed water in grapefruit in medium to long term[J],2014,12(4):1137-1148.
APA Romero-Trigueros, Cristina.,Nortes, Pedro A..,Pedrero, Francisco.,Mounzer, Oussama.,Alarcon, Juan J..,...&Nicolas, Emilio.(2014).Assessment of the viability of using saline reclaimed water in grapefruit in medium to long term.SPANISH JOURNAL OF AGRICULTURAL RESEARCH,12(4),1137-1148.
MLA Romero-Trigueros, Cristina,et al."Assessment of the viability of using saline reclaimed water in grapefruit in medium to long term".SPANISH JOURNAL OF AGRICULTURAL RESEARCH 12.4(2014):1137-1148.
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