Abstract
Rust (Uromyces appendiculatus) is a major foliar disease that reduces yield and pod quality in beans. The field trial of French beans was established at Jomo Kenyatta University of Agriculture and Technology (JKUAT). Single plant extracts and combinations of Boscia angustifolia, Zanthoxylum chalybeum and Melea volkensii were used to evaluate their effect on U. appendiculatus in the field. During the growing period, beans were infected with rust from natural inoculum at the field. Physiological responses such as carbon dioxide assimilation, transpiration (E), stomatal conductance (gs), and photosynthetic rate (Pn) of French beans treatments were examined after extracts of three antifungal plants were sprayed. B. angustifolia - Z. chalybeum combination and single plant treatment M. volkensii had positive effects on enhancing the rate of photosynthesis in bean plants. The high regressions between stomatal conductance and rate of transpiration in the treatments indicated that stomatal conductance and rate of transpiration were interdependent and it was interpreted to mean that stomatal conductance enhanced rate of transpiration at different times of the day. These plant extracts however caused an increase in the rate of transpiration of the bean plants, which resulted in loss of water. Results reveal bioactive potential of the flora from M. volkensii and a combination of B. angustifolia and Z. chalybeum to produce metabolites with potential applications as botanical pesticides. Key words: Antifungal, beans, physiological responses, rust.
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Claims 5
Claim · model-written summary
The B. angustifolia and Z. chalybeum extract combination enhanced bean photosynthesis.
- Taxon
- bean plantse0
- Treatment
- B. angustifolia - Z. chalybeum combinatione0
- Outcome
- rate of photosynthesise0
- Direction
- enhancinge0
Not reportedComparator
Verbatim
e0“B. angustifolia - Z. chalybeum combination and single plant treatment M. volkensii had positive effects on enhancing the rate of photosynthesis in bean plants”
Claim · model-written summary
M. volkensii treatment enhanced bean photosynthesis.
- Taxon
- bean plantse0
- Treatment
- single plant treatment M. volkensiie0
- Outcome
- rate of photosynthesise0
- Direction
- enhancinge0
Not reportedComparator
Verbatim
e0“B. angustifolia - Z. chalybeum combination and single plant treatment M. volkensii had positive effects on enhancing the rate of photosynthesis in bean plants”
Claim · model-written summary
Stomatal conductance and transpiration rate were strongly related across treatments.
- Taxon
- French beans (Phaseolus vulgaris)
Phaseolus vulgarist0 - Treatment
- treatmentse0
- Outcome
- rate of transpiratione0
- Qualifier
- interdependente0
Not reportedOrgan / stageDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high regressions between stomatal conductance and rate of transpiration in the treatments indicated that stomatal conductance and rate of transpiration were interdependent”
t0“French beans (Phaseolus vulgaris)”
Claim · model-written summary
Plant extracts increased transpiration in bean plants and caused water loss.
Not reportedComparator
Verbatim
e0“These plant extracts however caused an increase in the rate of transpiration of the bean plants, which resulted in loss of water”
Claim · model-written summary
M. volkensii flora had potential for botanical pesticide metabolites.
- Taxon
- French beans (Phaseolus vulgaris)Phaseolus vulgarist0
- Outcome
- bioactive potential of the flora from M. volkensiie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results reveal bioactive potential of the flora from M. volkensii”
t0“French beans (Phaseolus vulgaris)”
The same questions in other papers
botanical · physiology: gas exchange · Phaseolus vulgaris (common bean)Positive and negative results
1 in the opposite direction
- positive
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.