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ARTICLES

Response of ungrafted rootstocks and rootstocks grafted with wine grape varieties (Vitis sp.) to ‘lime-induced chlorosis’

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Pages 71-86 | Received 02 Feb 2013, Accepted 10 Jul 2014, Published online: 04 Jan 2016
 

ABSTRACT

The ungrafted rootstocks 41B, 1103P, 110R and 140Ru, the grafted combinations of 41B, 1103P and 110R with Xinomavro (one of the most important red wine grape varieties in Greece), as well as those of 1103P, 110R and 140Ru with Chardonnay, were evaluated for 'lime-induced chlorosis' tolerance by growing them with a) basic nutrient solution (BNS), b) BNS + 10 mM bicarbonate, c) BNS without iron (Fe) and d) BNS without zinc (Zn), in hydroponics. The ungrafted 140Ru followed by 41B under high bicarbonate presented the lowest degree of chlorosis; however only 41B presented non-differentiated biomass production and root/shoot ratio. Chlorotic symptoms in combination with plant growth parameters should be used as a tool for grapevine rootstock lime-tolerance screening whereas leaf Fe concentration and root ferric chelate reductase (FCR) activity should not. Lime-stress conditions affected plant mineral nutrition by depressing leaf nitrogen (N), phosphorus (P), calcium (Ca), magnesium (Mg) and increasing potassium (K), and zinc (Zn).

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