ALANY-NEMESFAJTA KOMBINÁCIÓK HATÁSA A SZŐLŐ MAKROELEM FELVÉTELÉRE

This study investigates macroelement contents (N, P, K, Ca, Mg) and their quality relations of 4 scion grape varieties (Italian Riesling, White Riesling, Chardonnay, Cabernet sauvignon) on 6 rootstock varieties (5C, 5BB, 125AA, 140Ru, 110R, Fercal) between 2001 and 2005. A field experiment was set up at Szentmiklós Hill (on the border of the town of Pécs) in southern part of Hungary in 1999. The investigated rootstocks had no statistically proven effect on the nitrogen levels of the leaves, but the scion varieties had. Phosphorus content of the leaves on rootstocks with Berlandieri x Riparia genetic background (5C, 5BB, 125AA) was lower at blooming than that on other investigated rootstocks. We found statistically significant differences in the calcium and magnesium content of leaves regarding rootstock and scion varieties too.A tanulmány 4 nemes szőlőfajta (Olasz rizling, Rajnai rizling, Chardonnay, Cabernet sauvignon) és 6 alanyfajta (5C, 5BB, 125AA, 140Ru, 110R, Fercal) kombináció esetében vizsgálja a levelekben a makroelemek koncentrációjának alakulását (2001-2005. között) és ezek minőségi viszonyát. A szabadföldi kísérlet Szentmiklós –hegyen (Pécs város határában) Magyarország déli részén 1999-ben került beállításra. A vizsgált alanyfajtáknak nem volt hatása a levelek N tartalmára, de a nemes fajtáknak igen. A Berlandieri x Riparia genetikai hátterű alanyokon a levelek foszfor tartalma virágzáskor alacsonyabb volt, mint a többi vizsgált alanyfajtán. Mind virágzáskor, mind éréskor a levelek kalcium és magnézium tartalma között statisztikai számításokkal igazolt különbség mutatkozott alanyonként és nemes fajtánként is

ALANY-NEMESFAJTA KOMBINÁCIÓK HATÁSA A SZŐLŐ MAKROELEM FELVÉTELÉRE

This study investigates macroelement contents (N, P, K, Ca, Mg) and their quality relations of 4 scion grape varieties (Italian Riesling, White Riesling, Chardonnay, Cabernet sauvignon) on 6 rootstock varieties (5C, 5BB, 125AA, 140Ru, 110R, Fercal) between 2001 and 2005. A field experiment was set up at Szentmiklós Hill (on the border of the town of Pécs) in southern part of Hungary in 1999. The investigated rootstocks had no statistically proven effect on the nitrogen levels of the leaves, but the scion varieties had. Phosphorus content of the leaves on rootstocks with Berlandieri x Riparia genetic background (5C, 5BB, 125AA) was lower at blooming than that on other investigated rootstocks. We found statistically significant differences in the calcium and magnesium content of leaves regarding rootstock and scion varieties too.A tanulmány 4 nemes szőlőfajta (Olasz rizling, Rajnai rizling, Chardonnay, Cabernet sauvignon) és 6 alanyfajta (5C, 5BB, 125AA, 140Ru, 110R, Fercal) kombináció esetében vizsgálja a levelekben a makroelemek koncentrációjának alakulását (2001-2005. között) és ezek minőségi viszonyát. A szabadföldi kísérlet Szentmiklós –hegyen (Pécs város határában) Magyarország déli részén 1999-ben került beállításra. A vizsgált alanyfajtáknak nem volt hatása a levelek N tartalmára, de a nemes fajtáknak igen. A Berlandieri x Riparia genetikai hátterű alanyokon a levelek foszfor tartalma virágzáskor alacsonyabb volt, mint a többi vizsgált alanyfajtán. Mind virágzáskor, mind éréskor a levelek kalcium és magnézium tartalma között statisztikai számításokkal igazolt különbség mutatkozott alanyonként és nemes fajtánként is

EFFECTS OF ROOTSTOCK-SCION COMBINATIONS ON MACROELEMENTS AVAILABILITY OF THE VINES

This study investigates macroelement contents (N, P, K, Ca, Mg) and their quality relations of 4 scion grape varieties (Italian Riesling, White Riesling, Chardonnay, Cabernet sauvignon) on 6 rootstock varieties (5C, 5BB, 125AA, 140Ru, 110R, Fercal) between 2001 and 2005. A field experiment was set up at Szentmiklós Hill (on the border of the town of Pécs) in southern part of Hungary in 1999. The investigated rootstocks had no statistically proven effect on the nitrogen levels of the leaves, but the scion varieties had. Phosphorus content of the leaves on rootstocks with Berlandieri x Riparia genetic background (5C, 5BB, 125AA) was lower at blooming than that on other investigated rootstocks. We found statistically significant differences in the calcium and magnesium content of leaves regarding rootstock and scion varieties too

Black Rot of Grapes (<i>Guignardia bidwellii</i>)—A Comprehensive Overview

The aim of this review is to provide readers with an integrated knowledge on black rot of grapes, based on a critical survey of previous and recent studies of scientific importance. The current state of the art and perspectives of science are presented, not only on the genetic determinants of grapevine resistance to black rot, predictive models of black rot epidemics, but also on the potential of metabolomics to explore black rot-grape interactions and shorten plant breeding processes. Numerous complications of disease management and ambiguities in phenotype-classification are highlighted, and by exploring the limitations and inconsistencies of previous studies, insights into key dilemmas and controversial findings are also provided, suggesting future research directions. Much research has been conducted, but biochemical and molecular studies of the true interactions between grapevine and Guignardia bidwellii are still rarity

Black Rot of Grapes (Guignardia bidwellii)&mdash;A Comprehensive Overview

The aim of this review is to provide readers with an integrated knowledge on black rot of grapes, based on a critical survey of previous and recent studies of scientific importance. The current state of the art and perspectives of science are presented, not only on the genetic determinants of grapevine resistance to black rot, predictive models of black rot epidemics, but also on the potential of metabolomics to explore black rot-grape interactions and shorten plant breeding processes. Numerous complications of disease management and ambiguities in phenotype-classification are highlighted, and by exploring the limitations and inconsistencies of previous studies, insights into key dilemmas and controversial findings are also provided, suggesting future research directions. Much research has been conducted, but biochemical and molecular studies of the true interactions between grapevine and Guignardia bidwellii are still rarity

Hybrid <i>Vitis</i> Cultivars with American or Asian Ancestries Show Higher Tolerance towards Grapevine Trunk Diseases

Grape production worldwide is increasingly threatened by grapevine trunk diseases (GTDs). No grapevine cultivar is known to be entirely resistant to GTDs, but susceptibility varies greatly. To quantify these differences, four Hungarian grape germplasm collections containing 305 different cultivars were surveyed to determine the ratios of GTDs based on symptom expression and the proportion of plant loss within all GTD symptoms. The cultivars of monophyletic Vitis vinifera L. origin were amongst the most sensitive ones, and their sensitivity was significantly (p Vitis species other than V. vinifera (e.g., V. labrusca L., V. rupestris Scheele, and V. amurensis Rupr.) in their pedigree. We conclude that the ancestral diversity of grapes confers a higher degree of resilience against GTDs