2020
DOI: 10.1590/1678-992x-2018-0233
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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 consiste… Show more

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Cited by 5 publications
(13 citation statements)
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References 13 publications
(13 reference statements)
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“…One of the consequences is the reduction in the number of floral branches and in the number of flowers per plant (Harsant et al, 2013). Another impact is related to the low viability and germination of pollen, because the increase in temperature can affect male and female gametophytes, increasing the abortion of flowers, with consequent reduction in the number of grain (Silva et al, 2020).…”
Section: Resultsmentioning
confidence: 99%
“…One of the consequences is the reduction in the number of floral branches and in the number of flowers per plant (Harsant et al, 2013). Another impact is related to the low viability and germination of pollen, because the increase in temperature can affect male and female gametophytes, increasing the abortion of flowers, with consequent reduction in the number of grain (Silva et al, 2020).…”
Section: Resultsmentioning
confidence: 99%
“…Of all the growth stages, reproductive stage is the most sensitive stage affected by negative impact of heat stress (Zinn et al, 2010). High temperature stress causes anomalies and malfunction in reproductive processes ranging from reduction in pollen germination (PGP) percentage, pollen viability percentage (PVP), malformation in ovule to inhibition in fertilization process in various crops, including rice (Xu et al, 2021), wheat (Ullah et al, 2022), chickpea (Bhandari et al, 2020;Devi et al, 2022), common bean (Silva et al, 2019;Soltani et al, 2019) and tomato (Gonzalo et al, 2021). High PGP and PVP values are indicators of efficient reproductive function leading to high pod and seed setting resulting in improved yield under heat stress (Firon et al, 2006;Pham et al, 2020).…”
Section: Discussionmentioning
confidence: 99%
“…Based on these traits, Mash114 and PantU31 genotypes could be promisingly used as donor parents for improving heat tolerance in urdbean. Screening of heat tolerance relying on PGP and PVP has been reported in rice (Zhang et al, 2018), wheat (Bheemanahalli et al, 2019), chickpea (Devi et al, 2022), lentil (Barghi et al, 2013), common bean (Silva et al, 2019;Vargas et al, 2021), tomato (Pham et al, 2020) and sorghum (Djanaguiraman et al, 2018).…”
Section: Discussionmentioning
confidence: 99%