Abstract
The aim of this study was to investigate the effect of heat stress on 12 bean genotypes through the analysis of their reproductive biology in terms of flowering, pollen viability, meiotic behavior, and production. Plants were grown in a climate chamber at 25-20 °C (day and night) and at a high temperature treatment 37-26 °C (day and night) from the vegetative (V4) development stage to physiological maturity. The experimental design was 2 × 12 factorial arrangement with six replications and the factors consisted of heat treatments and genotypes. In three replications, the number of newly opened flowers was checked daily. At physiological maturity, the following traits were evaluated: percentage of pod set, number of pods, number of viable seeds, number of aborted seeds, 100 seed weight, and seed yield (g per plant). The other three replications were used to collect flowers to create slides to study viability of the pollen grain and analyze the meiotic behavior. The heat treatment factor significantly affected the following traits: total number of pollen grains, number of flowers, number of pods, pod set, number of viable seeds, 100 seed weight, and seed yield. The raised temperature reduced these variables, except for percentage of pod set, and increased meiotic irregularities. The mean values regarding seed yield were 16.39 g per plant for the control treatment and 7.46 g per plant under high temperature. IAC Imperador, FT Nobre, Pérola, BRS Estilo, and IAC Diplomata stood out for higher bean seed yield under increased temperature.
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Claims 7
Claim · model-written summary
Raised temperature reduced total pollen grain number, flower number and pod number in bean.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarist0 - Treatment
- raised temperaturee0
- Outcome
- total number of pollen grains, number of flowers, number of podse1
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e0“The raised temperature reduced these variables, except for percentage of pod set, and increased meiotic irregularities”
e1“significantly affected the following traits: total number of pollen grains, number of flowers, number of pods, pod set, number of viable seeds, 100 seed weight, and seed yield”
Claim · model-written summary
Raised temperature reduced the number of viable seeds and 100 seed weight in bean.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- raised temperaturee0
- Outcome
- number of viable seeds, 100 seed weighte1
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e0“The raised temperature reduced these variables, except for percentage of pod set, and increased meiotic irregularities”
e1“significantly affected the following traits: total number of pollen grains, number of flowers, number of pods, pod set, number of viable seeds, 100 seed weight, and seed yield”
Claim · model-written summary
Raised temperature did not reduce percentage of pod set in bean.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- raised temperaturee0
- Outcome
- percentage of pod sete0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e0“The raised temperature reduced these variables, except for percentage of pod set, and increased meiotic irregularities”
Claim · model-written summary
Raised temperature increased meiotic irregularities in bean.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- raised temperaturee0
- Outcome
- meiotic irregularitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e0“The raised temperature reduced these variables, except for percentage of pod set, and increased meiotic irregularities”
Claim · model-written summary
Seed yield of bean fell to 7.46 g per plant under high temperature from 16.39 g per plant in the control.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- high temperaturee2
- Outcome
- seed yielde2
- Direction
- decreaseinferrede2
- Value
- 7.46 g per plante2
- Qualifier
- 16.39 g per plant for the control treatmente2
- Comparator
- control treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e1“significantly affected the following traits: total number of pollen grains, number of flowers, number of pods, pod set, number of viable seeds, 100 seed weight, and seed yield”
e2“The mean values regarding seed yield were 16.39 g per plant for the control treatment and 7.46 g per plant under high temperature”
Claim · model-written summary
Cultivars IAC Imperador, FT Nobre and Pérola had higher bean seed yield under increased temperature.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- IAC Imperador, FT Nobre, Pérolae3
- Treatment
- increased temperaturee3
- Outcome
- bean seed yielde3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e3“IAC Imperador, FT Nobre, Pérola, BRS Estilo, and IAC Diplomata stood out for higher bean seed yield under increased temperature”
Claim · model-written summary
Cultivars BRS Estilo and IAC Diplomata had higher bean seed yield under increased temperature.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- BRS Estilo, and IAC Diplomatae3
- Treatment
- increased temperaturee3
- Outcome
- bean seed yielde3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.)”
e3“IAC Imperador, FT Nobre, Pérola, BRS Estilo, and IAC Diplomata stood out for higher bean seed yield under increased temperature”
The same questions in other papers
heat · yield · Phaseolus vulgaris (common bean)Results differ
8 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.