Abstract
The effects of Fusarium seedling blight and root rot, caused by Fusarium culmorum, on plant emergence, harvestable tillers, grain yield and disease reaction in 12 spring barley cultivars were studied in greenhouse and field experiments at Bozeman, Mt. in 1984 and 1985. Atomization of F. culmorum macroconidia onto seed increased disease severity in greenhouse seedlings and mature plants in the field as compared with noninoculated seed. In the inoculated treatments the mean disease rating, based upon the extent of discoloration of the seedling coleoptile or the mature plant subcrown internode, differentiated resistant and susceptible two- and six-rowed cultivars. Among the 12 cultivars, seedling and mature plant disease reactions were not correlated. In 1985 field tests, F. culmorum inoculation reduced the plant emergence of all two-rowed, but only one six-rowed cultivar. Plant emergence in 1985 field tests was negatively correlated with greenhouse seedling and field mature plant disease reactions. To remove the effects of stand reduction by inoculation and determine the subsequent effect of infection on grain yield, the plant stand of a control treatment was hand-thinned to equal that of the inoculated treatment. Generally, F. culmorum inoculation had no effect on harvestable tillers or grain yield when compared with the hand-thinned control. The ease with which seed can be inoculated with the pathogen makes this technique a useful tool in evaluating the ability of a genotype to compensate for stand reduction and to tolerate root rot infection.Key words: Disease tolerance, dryland root rot
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Claims 6
Claim · model-written summary
Atomizing F. culmorum macroconidia onto seed increased disease severity in spring barley seedlings and mature field plants compared with noninoculated seed.
- Taxon
- spring barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- Atomization of F. culmorum macroconidia onto seede0
- Interactor
- F. culmorum
.jpg?width=60)
Fusarium culmorume0pathogen - Outcome
- disease severitye0
- Direction
- increasede0
- Comparator
- noninoculated seede0
- Setting
- in the fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
.jpg?width=500)
Verbatim
t0“EVALUATION OF SPRING BARLEYS”
e0“Atomization of F. culmorum macroconidia onto seed increased disease severity in greenhouse seedlings and mature plants in the field as compared with noninoculated seed”
Claim · model-written summary
Seedling and mature plant disease reactions of the 12 spring barley cultivars were not correlated.
- Taxon
- spring barleyHordeum vulgaret0
- Material
- 12 cultivarse1
- Outcome
- seedling and mature plant disease reactionse1
- Direction
- not correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“EVALUATION OF SPRING BARLEYS”
e1“Among the 12 cultivars, seedling and mature plant disease reactions were not correlated”
Claim · model-written summary
F. culmorum inoculation reduced plant emergence of all two-rowed spring barley cultivars, but only one six-rowed cultivar.
- Taxon
- spring barleyHordeum vulgaret0
- Material
- two-rowede2
- Treatment
- F. culmorum inoculatione2
- Interactor
- F. culmorumFusarium culmorume2pathogen
- Outcome
- plant emergencee2
- Direction
- reducede2
- Qualifier
- only one six-rowed cultivare2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“EVALUATION OF SPRING BARLEYS”
e2“In 1985 field tests, F. culmorum inoculation reduced the plant emergence of all two-rowed, but only one six-rowed cultivar”
Claim · model-written summary
Plant emergence in 1985 field tests was negatively correlated with seedling and field mature plant disease reactions.
- Taxon
- spring barleyHordeum vulgaret0
- Outcome
- Plant emergencee3
- Direction
- negatively correlatede3
- Setting
- 1985 field testse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“EVALUATION OF SPRING BARLEYS”
e3“Plant emergence in 1985 field tests was negatively correlated with greenhouse seedling and field mature plant disease reactions”
Claim · model-written summary
F. culmorum inoculation had no effect on harvestable tillers or grain yield of spring barley compared with the hand-thinned control.
- Taxon
- spring barleyHordeum vulgaret0
- Treatment
- F. culmorum inoculatione4
- Interactor
- F. culmorumFusarium culmorume4pathogen
- Outcome
- harvestable tillers or grain yielde4
- Direction
- no effecte4
- Comparator
- hand-thinned controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“EVALUATION OF SPRING BARLEYS”
e4“Generally, F. culmorum inoculation had no effect on harvestable tillers or grain yield when compared with the hand-thinned control”
Claim · model-written summary
The seed inoculation technique is a useful tool for evaluating a genotype ability to compensate for stand reduction and tolerate root rot.
- Taxon
- spring barleyHordeum vulgaret0
- Outcome
- a useful tool in evaluating the ability of a genotypee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“EVALUATION OF SPRING BARLEYS”
e5“makes this technique a useful tool in evaluating the ability of a genotype to compensate for stand reduction and to tolerate root rot infection”
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See all 100 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.