Abstract
Three two-component wheat (Triticum aestivum) cultivar mixtures, along with their pure stands, were grown at five ratios in three experiments. Each cultivar was susceptible to either one or two of three Puccinia striiformis races inoculated into the plots. Chaff color differences served as markers to distinguish the cultivars in mixture, so that disease could be calculated on a per-cultivar basis. Stripe rust severity on individual cultivars increased linearly with the frequency of that cultivar in mixture, with 16 of 18 possible regressions having significantly (P ≤ 0.05) positive linear slopes. One cultivar had significantly different levels of rust when mixed with different companion cultivars, suggesting that plant-plant interactions affected susceptibility of that cultivar to rust. In contrast to an earlier study, changes in frequencies of mixture components from planting to harvest had little influence on stripe rust severity. Mixtures with equivalent proportions of cultivars generally provided the highest level of disease control.
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Claims 4
Claim · model-written summary
Stripe rust severity on individual wheat cultivars increased linearly with cultivar frequency in mixtures.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- individual cultivarse0
- Outcome
- Stripe rust severitye0
- Direction
- increasede0
- Value
- 16 of 18 possible regressionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stripe rust severity on individual cultivars increased linearly with the frequency of that cultivar in mixture, with 16 of 18 possible regressions having significantly (P ≤ 0.05) positive linear slopes”
t0“Wheat”
Claim · model-written summary
One wheat cultivar had significantly different rust levels with different companion cultivars.
- Taxon
- WheatTriticum aestivumt0
- Material
- One cultivare0
- Outcome
- levels of ruste0
- Direction
- differente0
- Comparator
- different companion cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One cultivar had significantly different levels of rust when mixed with different companion cultivars”
t0“Wheat”
Claim · model-written summary
Changes in wheat mixture component frequency from planting to harvest had little influence on stripe rust severity.
- Taxon
- WheatTriticum aestivumt0
- Material
- mixture componentse0
- Outcome
- stripe rust severitye0
- Direction
- little influencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes in frequencies of mixture components from planting to harvest had little influence on stripe rust severity”
t0“Wheat”
Claim · model-written summary
Wheat mixtures with equivalent cultivar proportions generally provided the highest disease control.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Mixtures with equivalent proportions of cultivarse0
- Outcome
- disease controle0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mixtures with equivalent proportions of cultivars generally provided the highest level of disease control”
t0“Wheat”