Abstract
In order to evaluate the response of common bean to allelopathic effects of shoot aqueous extract of redroot pigweed (Amaranthus retroflexus L.), a greenhouse experiments was conducted in Faculty of Agriculture, University of Tabriz in 2010. The experiment was conducted as factorial experiment based on randomized completely block design with four replications. The factors were included three common bean cultivars (Khomein, Gholi and Pak) and redroot pigweed shoot aqueous extract concentrations at 0 (control), 5, 10, 15, and 20% (m/v). The effect of redroot pigweed shoot aqueous extract concentrations was significant on common bean height, leaf number per plant and leaf chlorophyll index (SPAD). Redroot pigweed shoot aqueous extract reduced the plant height, leaf number per plant and SPAD of common bean but there was no significant difference among extract concentrations. Also the effect of redroot pigweed shoot aqueous extract was significant on seed number per plant, 100-seeds weight, biological and grain yield of common bean. The seed number per plant was not significantly different at redroot pigweed shoot aqueous extract concentrations. Increasing the concentration of redroot pigweed water extract reduced common bean 100-seeds weight significantly and the lowest value was attributed to 20% aqueous extract concentration. Increasing the aqueous extract concentration from 0 to 10% reduced common bean biological and grain yield significantly, but increasing up to 20% had no significant effect on them. The effect of redroot pigweed aqueous extract on yield loss of common bean cultivars was mainly exerted through reduction in seed weight. The cultivar Gholi had the greatest plant height and leaf number per plant among common bean cultivars. The cultivar Khomein had the greatest biological and grain yield and the difference between cultivar Gholi and Pak was not significant.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 14
Claim · model-written summary
Pigweed extract reduced bean height, leaf number and chlorophyll index.
- Taxon
- common bean
Phaseolus vulgarise0 - Treatment
- Redroot pigweed shoot aqueous extracte0
- Interactor
- Redroot pigweede0weed
- Outcome
- plant height, leaf number per plant and SPADe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Redroot pigweed shoot aqueous extract reduced the plant height, leaf number per plant and SPAD of common bean”
Claim · model-written summary
These growth responses did not differ significantly among extract concentrations.
- Treatment
- extract concentrationse0
- Outcome
- no significant differencee0
- Direction
- no significant differencee0
Not reportedTaxonComparator
Verbatim
e0“there was no significant difference among extract concentrations”
Claim · model-written summary
Extract concentration significantly affected bean height, leaf number and chlorophyll index.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- redroot pigweed shoot aqueous extract concentrationse0
- Outcome
- height, leaf number per plant and leaf chlorophyll index (SPAD)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of redroot pigweed shoot aqueous extract concentrations was significant on common bean height, leaf number per plant and leaf chlorophyll index (SPAD)”
Claim · model-written summary
Extract significantly affected bean seed number, seed weight, biomass and grain yield.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- redroot pigweed shoot aqueous extracte0
- Outcome
- seed number per plant, 100-seeds weight, biological and grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of redroot pigweed shoot aqueous extract was significant on seed number per plant, 100-seeds weight, biological and grain yield of common bean”
Claim · model-written summary
Seed number per plant did not significantly differ across extract concentrations.
- Treatment
- redroot pigweed shoot aqueous extract concentrationse0
- Outcome
- seed number per plante0
- Direction
- not significantly differente0
Not reportedTaxonComparator
Verbatim
e0“seed number per plant was not significantly different at redroot pigweed shoot aqueous extract concentrations”
Claim · model-written summary
Increasing extract concentration significantly reduced 100 seed weight.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- redroot pigweed water extracte0
- Outcome
- 100-seeds weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the concentration of redroot pigweed water extract reduced common bean 100-seeds weight significantly”
Claim · model-written summary
The lowest 100 seed weight occurred at 20% extract.
Not reportedTaxon
Verbatim
e0“the lowest value was attributed to 20% aqueous extract concentration”
Claim · model-written summary
Increasing extract from 0 to 10% significantly reduced biological yield.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- aqueous extract concentratione0
- Outcome
- biologicale0
- Direction
- reducede0
- Value
- 10%e0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the aqueous extract concentration from 0 to 10% reduced common bean biological and grain yield significantly”
Claim · model-written summary
Increasing extract from 0 to 10% significantly reduced grain yield.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- aqueous extract concentratione0
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 10%e0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the aqueous extract concentration from 0 to 10% reduced common bean biological and grain yield significantly”
Claim · model-written summary
Further increases up to 20% did not significantly affect these yields.
Not reportedTaxonComparator
Verbatim
e0“increasing up to 20% had no significant effect on them”
Claim · model-written summary
The authors attributed cultivar yield loss primarily to reduced seed weight.
- Taxon
- common beanPhaseolus vulgarise0
- Outcome
- yield losse0
- Qualifier
- reduction in seed weighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of redroot pigweed aqueous extract on yield loss of common bean cultivars was mainly exerted through reduction in seed weight”
Claim · model-written summary
Gholi had the greatest height and leaf number.
- Taxon
- common beanPhaseolus vulgarise0
- Material
- Gholie0
- Outcome
- plant height and leaf number per plante0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivar Gholi had the greatest plant height and leaf number per plant among common bean cultivars”
Claim · model-written summary
Khomein had the greatest biological and grain yields.
Not reportedTaxon
Verbatim
e0“The cultivar Khomein had the greatest biological and grain yield”
Claim · model-written summary
Gholi and Pak did not differ significantly in these yields.
Not reportedTaxon
Verbatim
e0“the difference between cultivar Gholi and Pak was not significant”
The same questions in other papers
botanical · yield · Phaseolus vulgaris (common bean)Results differ
8 papers in the same direction as this paper · 25 in the opposite direction
- positive
- positive
- positive
30 papers more in this group
See all 34 papers →botanical · physiology: pigments · Phaseolus vulgaris (common bean)Positive and negative results
2 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.