Abstract
Y Cultivars of barley and wheat, resistant and susceptible to powdery mildew ( Erysiphe graminis ), were grown in perlite with added nutrient solutions in which the Ca(N0 3 ) 2 : KH 2 P0 4 ratio was from one‐third to three times the normal (1:1) amount in a balanced nutrient solution, i.e., 3:3, 3:1/3, 1/3:1/3, and 1/3:3. The degree of mildew infection was measured by planimetry, or by determining the number of conidia rer 10 g of leaf tissue or estimated visually. The Ethiopian barley cultivar CI 3926/3 was more resistant to mildew than ‘Kenia’, but the level of resistance varied depending on the Ca(N0 3 )h : KH 2 P0 4 ratio; both CI 3926/3 and ‘Kenia’ were more resistant when grown in 1/3:3 than in the other treatments. Small darkbrown streaking lesions were produced on CI 3926/3 and to a lesser extent on ‘Kenia’ grown in the high levels of Ca(N0} 3 h. ‘Aotea’ wheat plants were also resistant to mildew when grown in 1/3:3 and to some extent in 3:3, but susceptible in 1: 1, 3:1/3 and 1/3:1/3. Chlorotic flecking lesions occurred on plants grown in Yd. ‘A Federation’ wheat plants were immune to mildew in both 1/3:1/3 and 1/3:3.
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Claims 12
Claim · model-written summary
CI 3926/3 was more mildew-resistant than Kenia.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Material
- CI 3926/3e0
- Interactor
- mildewe0pathogen
- Outcome
- resistant to mildewe0
- Direction
- more resistante0
- Comparator
- ‘Kenia’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The Ethiopian barley cultivar CI 3926/3 was more resistant to mildew than ‘Kenia’”
t0“barley”
Claim · model-written summary
CI 3926/3 resistance varied with nutrient ratio.
- Taxon
- barleyHordeum vulgaret0
- Material
- CI 3926/3e1
- Treatment
- Ca(N0 3 )h : KH 2 P0 4 ratioe0
- Outcome
- level of resistancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“level of resistance varied depending on the Ca(N0 3 )h : KH 2 P0 4 ratio”
t0“barley”
e1“The Ethiopian barley cultivar CI 3926/3”
Claim · model-written summary
CI 3926/3 was more resistant at 1/3:3 than under other treatments.
- Taxon
- barleyHordeum vulgaret0
- Material
- CI 3926/3e0
- Treatment
- 1/3:3e0
- Outcome
- resistante0
- Direction
- more resistante0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both CI 3926/3 and ‘Kenia’ were more resistant when grown in 1/3:3 than in the other treatments”
t0“barley”
Claim · model-written summary
Kenia was more resistant at 1/3:3 than under other treatments.
- Taxon
- barleyHordeum vulgaret0
- Material
- ‘Kenia’e0
- Treatment
- 1/3:3e0
- Outcome
- resistante0
- Direction
- more resistante0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both CI 3926/3 and ‘Kenia’ were more resistant when grown in 1/3:3 than in the other treatments”
t0“barley”
Claim · model-written summary
High calcium nitrate produced dark-brown streaking lesions on CI 3926/3.
- Taxon
- barleyHordeum vulgaret0
- Material
- CI 3926/3e0
- Treatment
- high levels of Ca(N0} 3 he0
- Outcome
- Small darkbrown streaking lesionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Small darkbrown streaking lesions were produced on CI 3926/3 and to a lesser extent on ‘Kenia’ grown in the high levels of Ca(N0} 3 h”
t0“barley”
Claim · model-written summary
High calcium nitrate produced fewer dark-brown lesions on Kenia than CI 3926/3.
- Taxon
- barleyHordeum vulgaret0
- Material
- ‘Kenia’e0
- Treatment
- high levels of Ca(N0} 3 he0
- Outcome
- darkbrown streaking lesionse0
- Direction
- to a lesser extente0
- Comparator
- CI 3926/3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Small darkbrown streaking lesions were produced on CI 3926/3 and to a lesser extent on ‘Kenia’ grown in the high levels of Ca(N0} 3 h”
t0“barley”
Claim · model-written summary
Aotea wheat was resistant to mildew under 1/3:3.
- Taxon
- wheat
Triticum aestivumt0 - Material
- ‘Aotea’e0
- Treatment
- 1/3:3e0
- Interactor
- mildewe0pathogen
- Outcome
- resistant to mildewe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Aotea’ wheat plants were also resistant to mildew when grown in 1/3:3”
t0“wheat”
Claim · model-written summary
Aotea wheat was somewhat resistant under 3:3.
- Taxon
- wheatTriticum aestivumt0
- Material
- ‘Aotea’e1
- Treatment
- 3:3e0
- Interactor
- mildewe1pathogen
- Outcome
- to some extent in 3:3e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and to some extent in 3:3, but susceptible in 1: 1, 3:1/3 and 1/3:1/3”
e1“‘Aotea’ wheat plants were also resistant to mildew”
t0“wheat”
Claim · model-written summary
Aotea wheat was susceptible under 1:1, 3:1/3 and 1/3:1/3.
- Taxon
- wheatTriticum aestivumt0
- Material
- ‘Aotea’e1
- Treatment
- 1: 1, 3:1/3 and 1/3:1/3e0
- Interactor
- mildewe1pathogen
- Outcome
- susceptiblee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“susceptible in 1: 1, 3:1/3 and 1/3:1/3”
e1“‘Aotea’ wheat plants were also resistant to mildew”
t0“wheat”
Claim · model-written summary
Chlorotic flecking lesions occurred in plants grown in Yd.
- Taxon
- barley and wheatHordeum vulgareTriticum aestivumt0
- Treatment
- Yde0
- Outcome
- Chlorotic flecking lesionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorotic flecking lesions occurred on plants grown in Yd”
t0“barley and wheat”
Claim · model-written summary
A Federation wheat was immune to mildew at 1/3:1/3.
- Taxon
- wheatTriticum aestivumt0
- Material
- ‘A Federation’e0
- Treatment
- 1/3:1/3e0
- Interactor
- mildewe0pathogen
- Outcome
- immune to mildewe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘A Federation’ wheat plants were immune to mildew in both 1/3:1/3 and 1/3:3”
t0“wheat”
Claim · model-written summary
A Federation wheat was immune to mildew at 1/3:3.
- Taxon
- wheatTriticum aestivumt0
- Material
- ‘A Federation’e0
- Treatment
- 1/3:3e0
- Interactor
- mildewe0pathogen
- Outcome
- immune to mildewe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘A Federation’ wheat plants were immune to mildew in both 1/3:1/3 and 1/3:3”
t0“wheat”
The same questions in other papers
calcium atom · disease · Hordeum vulgare (barley)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
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1 paper more in this group
See all 5 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.