干旱区生态环境知识资源中心(Arid): Seasonal potassium dynamics in fruiting and non-fruiting branches of pistachio trees in relation to crop load

Arid

DOI	10.1080/01904167.2021.1936028
	Seasonal potassium dynamics in fruiting and non-fruiting branches of pistachio trees in relation to crop load
	Elloumi, Olfa; Ghrab, Mohamed; Ben Mimoun, Mehdi
通讯作者	Elloumi, O (corresponding author), Univ Sfax, Inst Olivier IO, Lab LR161O01,LR161O02,BP 1087, Sfax 3111, Tunisia.
来源期刊	JOURNAL OF PLANT NUTRITION
ISSN	0190-4167
EISSN	1532-4087
出版年	2021-05
英文摘要	Under dry and warm environmental conditions, the main Tunisian pistachio cultivar Mateur does not show a normal 'On/Off' cycle with highly variable nut yield, which could be affected by the tree nutritional status. In this context, Potassium (K) is considered a key nutritional element for nut development and for yield. The current study investigated the effects of alternate bearing and flower bud removal on seasonal dynamics of potassium in fruiting and non-fruiting branches of mature pistachio trees (cv. Mateur) in arid land. Three disbudding treatments were considered in reference to untreated trees taken as a control (T-0): removal of all flower buds for one year (T-1), or two successive years (T-2) and removal of 50% of flower buds each year (T-3). Similar K concentrations were detected early in the season in leaves, current shoot and one-year-old wood for all treatments. Current shoot begin the cycle with higher K concentrations, which declined during the lignification of endocarp and seed growth stages to finally accumulate K during postharvest. Inversely, one-year-old wood stored a large amount of K during the stage I and II of nut development, and became the main sink for K of the bearing shoot. Leaf K concentration explained 75% of yield variation. Yearly removal of 50% of flower buds induced less variation of leaf K concentrations (ranged between 0.5-0.8% DM) with regular nut yield compared to bi-annual On-Off cycle. Thus, under severe climatic conditions, the annual pruning could be applied to improve the nutritional status of pistachio trees.
英文关键词	pistacia vera potassium source-sink relation
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000658599600001
WOS关键词	ALTERNATE-BEARING ; CV MATEUR ; STARCH STORAGE ; FUYU PERSIMMON ; FLOWER BUDS ; DRY-MATTER ; LEAVES ; MATURE ; PHOSPHORUS ; NITROGEN
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352339
作者单位	[Elloumi, Olfa; Ghrab, Mohamed] Univ Sfax, Inst Olivier IO, LR16I001,LR16IO02, Sfax, Tunisia; [Ben Mimoun, Mehdi] Univ Carthage, Inst Natl Agron Tunisie INAT, LR17AGRI01, Tunis, Tunisia
推荐引用方式 GB/T 7714	Elloumi, Olfa,Ghrab, Mohamed,Ben Mimoun, Mehdi. Seasonal potassium dynamics in fruiting and non-fruiting branches of pistachio trees in relation to crop load[J],2021.
APA	Elloumi, Olfa,Ghrab, Mohamed,&Ben Mimoun, Mehdi.(2021).Seasonal potassium dynamics in fruiting and non-fruiting branches of pistachio trees in relation to crop load.JOURNAL OF PLANT NUTRITION.
MLA	Elloumi, Olfa,et al."Seasonal potassium dynamics in fruiting and non-fruiting branches of pistachio trees in relation to crop load".JOURNAL OF PLANT NUTRITION (2021).