气候变化领域集成服务门户(CCPortal): Physiological efficiency of grapevine canopies having varying geometries: Seasonal and diurnal whole canopy gas exchange assessment under well-watered and water deficit conditions

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DOI	10.1016/j.envexpbot.2024.105716
	Physiological efficiency of grapevine canopies having varying geometries: Seasonal and diurnal whole canopy gas exchange assessment under well-watered and water deficit conditions
	Del Zozzo, F.; Magnanini, E.; Poni, S.
发表日期	2024
ISSN	0098-8472
EISSN	1873-7307
起始页码	221
卷号	221
英文摘要	Grapevine training systems should be thoroughly examined to contribute to vineyards more resilient to climate change. This study was conducted on 18 three -year -old fruiting Sangiovese vines grown in pots outdoors with canopies trained to a vertical shoot positioned (VSP) spur -pruned cordon, a single high wire (SHW), and a Pergola (P) training system. Whole -canopy net CO 2 exchange rate (NCER) and transpiration (T) were monitored by an enclosure system on a 24/7 basis from DOY 179 -249. All vines were kept well -watered (WW) from DOY 179 to DOY 199, and the water supply was first reduced to 50% (DOY200 -204) and then to 35% (DOY 205 -214) before final rewatering (DOY 215 -217). Vegetative growth, yield components, and grape composition were also assessed. Seasonal gas exchange on a per vine basis reflected vine size given as total leaf area (LA) varying from 2.5 to 3.1 m 2 ; however, when diurnal trends of NCER/LA and T/LA within the WW and rewatering periods were considered, the good correlations found with the modeled total canopy light interception (TCLI) in SHW and P, were not confirmed in VSP. In all canopy geometries, the best predictor of NCER/LA was the total direct light intensity, whereas T/LA was linearly and closely correlated with air VPD. In terms of NCER/LA during the WW period, SHW had 24% higher rates than VSP and P. Under progressive water stress, SHW again exhibited higher drought resilience, while NCER and T were severely reduced in VSP and P. Severe stress also caused lower light saturation points and quantum yield in VSP and P. Under similar yield levels, P reached the best fruit maturity. In terms of photosynthetic efficiency and adaptive response to increasing water stress, the SHW performed best. Results extrapolated at the field level indicate the P system as the most rewarding.
英文关键词	Vitis vinifera; Photosynthesis; Transpiration; Total light interception; Modeling; Training systems
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
WOS类目	Plant Sciences ; Environmental Sciences
WOS记录号	WOS:001209806500001
来源期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303921
作者单位	Catholic University of the Sacred Heart
推荐引用方式 GB/T 7714	Del Zozzo, F.,Magnanini, E.,Poni, S.. Physiological efficiency of grapevine canopies having varying geometries: Seasonal and diurnal whole canopy gas exchange assessment under well-watered and water deficit conditions[J],2024,221.
APA	Del Zozzo, F.,Magnanini, E.,&Poni, S..(2024).Physiological efficiency of grapevine canopies having varying geometries: Seasonal and diurnal whole canopy gas exchange assessment under well-watered and water deficit conditions.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,221.
MLA	Del Zozzo, F.,et al."Physiological efficiency of grapevine canopies having varying geometries: Seasonal and diurnal whole canopy gas exchange assessment under well-watered and water deficit conditions".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 221(2024).