Abstract
Breeding for resistance is an important strategy to manage common bacterial blight disease caused by Xanthomonas campestris pv. phaseoli (E. Smith) Dye ( Xep ) in common bean ( Phaseolus vulgaris L.). It is necessary to determine if prior inoculation of the first trifoliolate leaf with Xcp influences subsequent reactions in other plant organs by increasing or decreasing resistance to Xcp. It is difficult to get an accurate estimate of heritability of disease reaction in pods since environment greatly affects the heritability estimate if flowering occurs over extended time periods. Thus, the disease reaction in attached pods versus detached pods was compared. A split-split plot design with two replications (growth chambers as blocks) was used, with bean lines as the whole-plot factors, Xcp strains as subplot factors, and bacterial inoculation treatments for leaf reactions or pod treatments as split-split plot factors. The first trifoliolate leaves, later developed leaves, and attached and detached pods were inoculated. No effects of prior inoculation on the disease reactions of subsequently inoculated leaves and pods were observed, indicating that the different plant organs can be inoculated at different times. The fact that detached and attached pods showed similar disease symptoms would suggest use of the former to reduce environment variance and improve heritability estimates of resistance.
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Claims 3
Claim · model-written summary
Prior leaf inoculation did not alter disease reactions in later inoculated leaves or pods.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- prior inoculatione0
- Interactor
- Xanthomonas campestris pv. phaseoliXanthomonas phaseoli pv. phaseolie1pathogene2
- Outcome
- disease reactionse0
- Direction
- No effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No effects of prior inoculation on the disease reactions of subsequently inoculated leaves and pods were observed”
t0“Common Bean”
e1“Xanthomonas campestris pv. phaseoli”
e2“Xanthomonas campestris pv. phaseoli”
Claim · model-written summary
Detached and attached pods showed similar disease symptoms.
- Taxon
- common beanPhaseolus vulgarist0
- Organ / stage
- podse0
- Outcome
- similar disease symptomse0
- Direction
- similare0
- Comparator
- attached podse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“detached and attached pods showed similar disease symptoms”
t0“Common Bean”
Claim · model-written summary
The authors suggest detached pods to reduce environmental variance and improve heritability estimates.
- Taxon
- common beanPhaseolus vulgarist0
- Outcome
- reduce environment variance and improve heritability estimates of resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of the former to reduce environment variance and improve heritability estimates of resistance”
t0“Common Bean”
The same questions in other papers
inoculation · Xanthomonas phaseoli pv. phaseoli · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- no effect
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.