Abstract
Magnesium deficiency is not uncommon in the world’s vineyards, however cases where Mg levels are high (Mg above 15mg/100g soil), are less common. California’s serpentine soils in the Coastal Range are high in Mg. We established a two step trial to determine if sources of Mg tolerance exist in Vitis. To initiate the project we propagated 15 rootstocks: Riparia Gloire; Rupestris St. George; T.K. 5BB, T. 5C, 420A Mgt; 110R, 1103P; 3309C, 101-14Mgt; 1616C; Borner; Fercal; Freedom; and Ramsey. These rootstocks were treated with K2SO4 solution (30; 60; 120 mg/100g soil) until magnesium deficiency symptoms occurred on the plants. We discarded the rootstocks that displayed a low degree of Mg deficiency (T. 5C, 110R, 1103P, 3309C, 1616C, Borner), they preferred to take up Mg regardless of how high the K concentration in the soil was. We then screened the following genotypes for Mg tolerance: Riparia Gloire, St. George, Ramsey, V. longii, V. monticola, V. cordifolia, V. rufotomentosa, V. simpsonii, V. shuttleworthii, V. vulpina, V. labrusca, 101-14Mgt., T.K. 5 BB, 420A Mgt, Berlandieri x Riparia x Rupestris hybrid cv. Georgikon 103, 44-53 Malegue, Freedom, and Fercal. Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves. Before the plants were treated leaf samples were taken for analysis of K and Mg content. A 0.5 % NPK solution was added to each pot three times and the leaves were treated with the Mg solutions at the same time. We evaluated the number and percentage of symptomatic leaves. The fresh weight of the roots, shoots and leaves, and the dry weight of the leaves was measured and the leaf samples analyzed for K and Mg. The root weight of all genotypes decreased except V. longii, V. vulpina, St. George, and Fercal after the 2 % MgSO4 foliar application. The shoot weight of the pure Vitis species increased compared to the control, while the rootstock varieties, except Freedom decreased. Leaf weights increased in general, but decreased for Ramsey, St. George, Dog Ridge, 101-14Mgt, Fercal, and Georgikon 103. The K content of increased with treatment in the following genotypes: V. simpsonii, V. rufotomentosa, V. monticola, T.K. 5BB, 420A Mgt, Dog Ridge, 44-53 M, and Georgikon 103. The Mg content increased in all genotypes, but the differences were small. Vitis vulpina, Riparia Gloire, St. George, Concord, 101-14 Mgt, and Fercal took up the most Mg and were the most sensitive. Genotypes with the smallest change compared to their untreated controls were V. monticola, V. longii, and Georgikon 103. The K/Mg ratio was 1.1 – 3.1 times higher in the 2% Mg treated plants compared to controls. The least affected were V. simpsonii, V. longii, 420A Mgt, and Georgikon 103. The results suggest that 101-14 Mgt, Fercal, St. George, and Riparia Gloire are not useful for further Mg tolerance breeding. However, hybridization with V. simpsonii, V. longii, V. monticola and Georgikon 103, T.K. 5BB, 420 A Mgt and 44-53 M might lead to rootstocks with high Mg tolerance.
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Claims 14
Claim · model-written summary
Root weight decreased after 2 % MgSO4 foliar application in all genotypes except V. longii, V. vulpina, St. George, and Fercal.
- Treatment
- 2 % MgSO4 foliar applicatione1
- Outcome
- root weighte1
- Direction
- decreasede1
- Qualifier
- except V. longii, V. vulpina, St. George, and Fercale1
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The root weight of all genotypes decreased except V. longii, V. vulpina, St. George, and Fercal after the 2 % MgSO4 foliar application”
Claim · model-written summary
Shoot weight of pure Vitis species increased compared with the control after MgSO4 foliar application.
- Material
- pure Vitis speciese1
- Treatment
- MgSO4 solutionse2
- Outcome
- shoot weighte1
- Direction
- increasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The shoot weight of the pure Vitis species increased compared to the control, while the rootstock varieties, except Freedom decreased”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
Shoot weight of rootstock varieties, except Freedom, decreased after MgSO4 foliar application.
- Material
- rootstock varietiese1
- Treatment
- MgSO4 solutionse2
- Outcome
- shoot weighte1
- Direction
- decreasede1
- Qualifier
- except Freedome1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The shoot weight of the pure Vitis species increased compared to the control, while the rootstock varieties, except Freedom decreased”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
Leaf weights increased in general after MgSO4 foliar application.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“Leaf weights increased in general, but decreased for Ramsey, St. George, Dog Ridge, 101-14Mgt, Fercal, and Georgikon 103”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
Leaf weights decreased after MgSO4 foliar application in Ramsey, St. George, Dog Ridge, 101-14Mgt, Fercal and Georgikon 103.
- Material
- Ramsey, St. George, Dog Ridge, 101-14Mgt, Fercal, and Georgikon 103e1
- Treatment
- MgSO4 solutionse2
- Outcome
- Leaf weightse1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“Leaf weights increased in general, but decreased for Ramsey, St. George, Dog Ridge, 101-14Mgt, Fercal, and Georgikon 103”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
K content increased with MgSO4 treatment in eight genotypes, including V. simpsonii, V. monticola and Georgikon 103.
- Material
- V. simpsonii, V. rufotomentosa, V. monticola, T.K. 5BB, 420A Mgt, Dog Ridge, 44-53 M, and Georgikon 103e1
- Treatment
- MgSO4 solutionse2
- Outcome
- K contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The K content of increased with treatment in the following genotypes: V. simpsonii, V. rufotomentosa, V. monticola, T.K. 5BB, 420A Mgt, Dog Ridge, 44-53 M, and Georgikon 103”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
Mg content increased in all genotypes after MgSO4 treatment, with small differences.
- Treatment
- MgSO4 solutionse2
- Outcome
- Mg contente1
- Direction
- increasede1
- Qualifier
- the differences were smalle1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The Mg content increased in all genotypes, but the differences were small”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
Vitis vulpina, Riparia Gloire, St. George, Concord, 101-14 Mgt and Fercal took up the most Mg and were the most sensitive.
- Material
- Vitis vulpina, Riparia Gloire, St. George, Concord, 101-14 Mgt, and Fercale1
- Outcome
- took up the most Mge1
- Qualifier
- were the most sensitivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“Vitis vulpina, Riparia Gloire, St. George, Concord, 101-14 Mgt, and Fercal took up the most Mg and were the most sensitive”
Claim · model-written summary
V. monticola, V. longii and Georgikon 103 showed the smallest change in response to MgSO4 treatment compared with untreated controls.
- Material
- V. monticola, V. longii, and Georgikon 103e1
- Treatment
- MgSO4 solutionse2
- Outcome
- changee1
- Direction
- smalleste1
- Comparator
- untreated controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“Genotypes with the smallest change compared to their untreated controls were V. monticola, V. longii, and Georgikon 103”
e2“Two concentrations of MgSO4 solutions (1 % and 2 %) were applied by spraying the leaves”
Claim · model-written summary
V. simpsonii, V. longii, 420A Mgt and Georgikon 103 were the least affected by Mg treatment.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The least affected were V. simpsonii, V. longii, 420A Mgt, and Georgikon 103”
Claim · model-written summary
The K/Mg ratio was 1.1 to 3.1 times higher in plants treated with 2 % Mg than in controls.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The K/Mg ratio was 1.1 – 3.1 times higher in the 2% Mg treated plants compared to controls”
Claim · model-written summary
Rootstocks 101-14 Mgt, Fercal, St. George and Riparia Gloire are not useful for further Mg tolerance breeding.
- Material
- 101-14 Mgt, Fercal, St. George, and Riparia Gloiree1
- Outcome
- not useful for further Mg tolerance breedinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“The results suggest that 101-14 Mgt, Fercal, St. George, and Riparia Gloire are not useful for further Mg tolerance breeding”
Claim · model-written summary
Hybridization with V. simpsonii, V. longii, V. monticola, Georgikon 103, T.K. 5BB, 420 A Mgt and 44-53 M might lead to rootstocks with high Mg tolerance.
- Material
- V. simpsonii, V. longii, V. monticola and Georgikon 103, T.K. 5BB, 420 A Mgt and 44-53 Me1
- Outcome
- rootstocks with high Mg tolerancee1
- Qualifier
- mighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“However, hybridization with V. simpsonii, V. longii, V. monticola and Georgikon 103, T.K. 5BB, 420 A Mgt and 44-53 M might lead to rootstocks with high Mg tolerance”
Claim · model-written summary
Rootstocks with a low degree of Mg deficiency were discarded because they took up Mg regardless of soil K concentration.
- Material
- T. 5C, 110R, 1103P, 3309C, 1616C, Bornere1
- Outcome
- low degree of Mg deficiencye1
- Qualifier
- they preferred to take up Mg regardless of how high the K concentration in the soil wase2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SCREENING VITIS SPECIES”
e1“We discarded the rootstocks that displayed a low degree of Mg deficiency (T. 5C, 110R, 1103P, 3309C, 1616C, Borner)”
e2“they preferred to take up Mg regardless of how high the K concentration in the soil was”
The same questions in other papers
magnesium sulfate · growth · VitisResults agree
1 paper in the same direction as this paper
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application · growth · VitisPositive and negative results
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- positive
- positive
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42 papers more in this group
See all 46 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.