Arid
DOI10.1007/s00468-016-1466-6
Morpho-anatomical and physiological traits of two Bougainvillea genotypes trained to two shapes under deficit irrigation
Cirillo, Chiara; De Micco, Veronica; Rouphael, Youssef; Balzano, Angela; Caputo, Rosanna; De Pascale, Stefania
通讯作者De Pascale, Stefania
来源期刊TREES-STRUCTURE AND FUNCTION
ISSN0931-1890
EISSN1432-2285
出版年2017
卷号31期号:1页码:173-187
英文摘要

The analysis of the growth behaviour, wood anatomical, and eco-physiological traits of two Bougainvillea genotypes, trained to two shapes and subjected to different irrigation regimes, fully supports the idea that structural properties interact with cultural practices (i.e., training) in determining the adaptive capability of plants, hence their productivity and survival.


Bougainvillea species are cultivated for landscaping in the arid Mediterranean region. In Bougainvillea spp., secondary xylem and phloem are formed by successive cambia leading to a peculiar stem anatomy which could favour water storage and plant adaptation under drought conditions. To achieve sustainable production of Bougainvillea ornamental shrubs, it is crucial to understand how different genotypes respond to deficit irrigation and how cultural practices, such as canopy training, may interact with morpho-anatomical traits in modifying the plants’ ability to withstand water deficit. A greenhouse experiment was conducted to determine the effects of deficit irrigation on plant growth, ecophysiology, and branch anatomy in two Bougainvillea genotypes [B. x buttiana ’Rosenka’, B. ’Lindleyana’ (=B. ’Aurantiaca’)] trained to globe and pyramid shapes. Irrigation treatments were based on daily evapotranspiration (ET): control (C, 100 % ET) or deficit irrigation (DI, 25 % ET). The two genotypes exhibited morphological adaptations to cope with water deficit, including reductions in dry weight, leaf number, and lamina size. In both genotypes, the DI-induced increase in stomatal resistance was accompanied by a decrease in stomata size. Water deficit triggered adjustments in wood anatomical functional traits, also depending on canopy shape and genotype, favouring either water conduction efficiency or safety against embolism. The occurrence of a safer hydraulic system in the pyramid-trained plants suggests a better control of water transport, thus supporting better growth performance under DI conditions compared to globe-trained plants. Such differences, induced by different canopy-shape trainings, should be considered in the management of DI.


英文关键词Leaf water potential Quantitative wood anatomy Stomata Stomatal resistance Successive cambia Water stress
类型Article
语种英语
国家Italy
收录类别SCI-E
WOS记录号WOS:000394283900015
WOS关键词WATER-USE EFFICIENCY ; HYDRAULIC ARCHITECTURE ; WOODY ORNAMENTALS ; DROUGHT STRESS ; PLANTS ; GROWTH ; QUALITY ; XYLEM ; RESPONSES ; SAFETY
WOS类目Forestry
WOS研究方向Forestry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202718
作者单位Univ Naples Federico II, Dept Agr Sci, Via Univ 100, I-80055 Portici, Italy
推荐引用方式
GB/T 7714
Cirillo, Chiara,De Micco, Veronica,Rouphael, Youssef,et al. Morpho-anatomical and physiological traits of two Bougainvillea genotypes trained to two shapes under deficit irrigation[J],2017,31(1):173-187.
APA Cirillo, Chiara,De Micco, Veronica,Rouphael, Youssef,Balzano, Angela,Caputo, Rosanna,&De Pascale, Stefania.(2017).Morpho-anatomical and physiological traits of two Bougainvillea genotypes trained to two shapes under deficit irrigation.TREES-STRUCTURE AND FUNCTION,31(1),173-187.
MLA Cirillo, Chiara,et al."Morpho-anatomical and physiological traits of two Bougainvillea genotypes trained to two shapes under deficit irrigation".TREES-STRUCTURE AND FUNCTION 31.1(2017):173-187.
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