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dc.contributor.authorVan der Westhuizen, M.M.
dc.contributor.authorBerner, J.M.
dc.contributor.authorBoogaers, N.
dc.contributor.authorOosterhuis, D.M.
dc.date.accessioned2020-07-20T12:29:01Z
dc.date.available2020-07-20T12:29:01Z
dc.date.issued2020
dc.identifier.citationVan der Westhuizen, M.M. et al. 2020. Chlorophyllafluorescence as an indicator of heat stress in cotton (Gossypium hirsutumL.). South African journal of plant and soil, 37(2):116-119. [https://doi.org/10.1080/02571862.2019.1665721]en_US
dc.identifier.issn0257-1862
dc.identifier.issn2167-034X (Online)
dc.identifier.urihttp://hdl.handle.net/10394/35208
dc.identifier.urihttps://www.tandfonline.com/doi/abs/10.1080/02571862.2019.1665721
dc.identifier.urihttps://doi.org/10.1080/02571862.2019.1665721
dc.description.abstractCotton (Gossypium hirsutum L.) is a major fibre crop that is greatly affected by climatic factors, especially drought and high temperatures. Excessive temperature (above 30 °C) during the reproductive stage (flowering) negatively affects cotton yield potential. Four diverse cotton genotypes were evaluated in a greenhouse study at Rustenburg, North West province, South Africa to elicit information on heat tolerance using chlorophyll a fluorescence (ChlF) measurements. The ChlF measurements were made under laboratory conditions in an effort to develop a quick, reliable and inexpensive procedure capable of predicting heat stress on cotton. Tests consisted of measurements of maximum quantum yield (F v/F m) performed on intact leaves of cotton plants. Plants were subjected to two heat treatments, namely 30 °C and 40 °C for 6 hours, and measured with the M-PEA fluorometer. The maximum quantum yield (F v/F m) decreased significantly when plants were subjected to 40 °C as compared to the 30 °C treatment. This decrease in the maximum quantum yield indicates damage to the photosynthetic apparatus of the plantsen_US
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.subjectChlorophyll a fluorescenceen_US
dc.subjectCotton (Gossypium hirsutum)en_US
dc.subjectHeat stressen_US
dc.subjectPhotosystem IIen_US
dc.titleChlorophyllafluorescence as an indicator of heat stress in cotton (Gossypium hirsutumL.)en_US
dc.typeArticleen_US
dc.contributor.researchID21203083 - Berner, Jacques Maynard
dc.contributor.researchID24624322 - Boogaers, Nicole


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