Show simple item record

dc.contributor.authorVan der Westhuizen, M.M.
dc.contributor.authorBerner, J.M.
dc.contributor.authorBoogaers, N.
dc.contributor.authorOosterhuis, D.M.
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. []en_US
dc.identifier.issn2167-034X (Online)
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.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.contributor.researchID21203083 - Berner, Jacques Maynard
dc.contributor.researchID24624322 - Boogaers, Nicole

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record