2015
DOI: 10.1111/pce.12589
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Seed set, pollen morphology and pollen surface composition response to heat stress in field pea

Abstract: Pea (Pisum sativum L.) is a major legume crop grown in a semi-arid climate in Western Canada, where heat stress affects pollination, seed set and yield. Seed set and pod growth characteristics, along with in vitro percentage pollen germination, pollen tube growth and pollen surface composition, were measured in two pea cultivars (CDC Golden and CDC Sage) subjected to five maximum temperature regimes ranging from 24 to 36 °C. Heat stress reduced percentage pollen germination, pollen tube length, pod length, see… Show more

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Cited by 123 publications
(139 citation statements)
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“…“At the time of reproduction, a brief phase of high temperature may decrease the number of floral buds and augment abortion of flowers abortion, significantly, though variations occur in the response within and amid plant species as well as their genotypes” (Annisa et al, 2013; Kaushal et al, 2013; Sage et al, 2015). Investigations involving exposure to moderate heat stress at various reproductive stages have associated development and performance of pollen grains as being highly susceptible to elevated temperature stress (Kaushal et al, 2013; Jiang et al, 2015; Sage et al, 2015). High temperatures may interrupt reproductive function by changing the concentrations of phytohormones like auxins (Teale et al, 2006) and abscisic acid (Todaka et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…“At the time of reproduction, a brief phase of high temperature may decrease the number of floral buds and augment abortion of flowers abortion, significantly, though variations occur in the response within and amid plant species as well as their genotypes” (Annisa et al, 2013; Kaushal et al, 2013; Sage et al, 2015). Investigations involving exposure to moderate heat stress at various reproductive stages have associated development and performance of pollen grains as being highly susceptible to elevated temperature stress (Kaushal et al, 2013; Jiang et al, 2015; Sage et al, 2015). High temperatures may interrupt reproductive function by changing the concentrations of phytohormones like auxins (Teale et al, 2006) and abscisic acid (Todaka et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…the average viability percentage with irrigation was of 98.37 %, while the one with drought was of 96.85 %. However, it is possible that morphological pollen staining could have overestimated the percentage of pollen viability as has already been reported in other works (González, Estévez, Castillo, Salomón, Moré & Hernandez, 2002); in this sense, readings of such a high viability in all treatments could have been biased, and there were normally variations, as has been reported in other legumes, where pollen germination percentage was reduced by heat stress (Jiang, Lahlali, Karunakaran, Kumar, Davis & Bueckert, 2015). However, it should be noted that this technique was used because it allowed the preservation of the original pollen grain structure (from the time they were collected) in the fixative solution, before these were processed for analysis; therefore, we also thought of estimating an additional pollen production indicator.…”
Section: Discussionmentioning
confidence: 69%
“…The consequence is lower pollen germination potency (Lahlali et al 2014; Jiang et al 2015). Pollen lipids play also an important role in the induction and the strengthening of allergy (Risse et al 2000).…”
Section: Discussionmentioning
confidence: 99%
“…They could alter the allergenic properties of proteins and modify the immune response (Bashir et al 2013). Lipids content and their quantitative changes can be easily detected by infrared spectroscopy (Jiang et al 2015). Zimmermann and Kohler (2014) found the change in infrared spectra at the peak corresponding to lipids (1745 cm −1 ) in pollen collected from the site with high temperatures.…”
Section: Discussionmentioning
confidence: 99%
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