1999
DOI: 10.1046/j.1365-3040.1999.00411.x
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Postanthesis temperatures influence cytokinin accumulation and wheat kernel weight

Abstract: High temperatures during reproductive development alter kernel development and reduce yield and quality in wheat (Triticum aestivum L.). Understanding how temperature alters kernel formation will help the development of genetic approaches to enhance heat tolerance in this cereal. A relationship between kernel development and postanthesis cytokinin accumulation is well documented, but the effect of temperature on this relationship is not known. This study quantified the effects of a postanthesis temperature tre… Show more

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Cited by 34 publications
(17 citation statements)
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“…Yang et al (2003) have reported that the IAA effects and cell division rate in the grain of rice were also significantly correlated. In cereals, high levels of cytokinins are generally found in the endosperm of developing seeds, which may be required for cell division during the early phase of seed filling (Banowetz et al 1999). As mentioned above, cytokinins have a major role, but little information is available with regards to their effect on endosperm cell number (Brenner and Cheikh 1995).…”
Section: Discussionmentioning
confidence: 99%
“…Yang et al (2003) have reported that the IAA effects and cell division rate in the grain of rice were also significantly correlated. In cereals, high levels of cytokinins are generally found in the endosperm of developing seeds, which may be required for cell division during the early phase of seed filling (Banowetz et al 1999). As mentioned above, cytokinins have a major role, but little information is available with regards to their effect on endosperm cell number (Brenner and Cheikh 1995).…”
Section: Discussionmentioning
confidence: 99%
“…Nevertheless, in many of the wheat‐producing regions of the world, temperatures exceed this optimum during part of the growing season and reduce grain yield and quality (Grass and Burris, 1995). Banowetz et al (1999) performed a postanthesis (1–7 days) treatment at a day/night temperature of 95/77°F, which reduced kernel weight and number on the primary spike. At 12 days after anthesis, kernel weight was reduced by 23% in the treated plants.…”
Section: Useful Conversionsmentioning
confidence: 99%
“…Davies et al (1984) observed that substantial gains were made in green flag leaf area duration through fungicide use; however, there was no parallel gain in yield. Bimmock and Gooding (2002) sought to determine whether fungicides with different modes of action affected grain fill, and whether that effect depended on when senescence occurred relative to the time of grain filling. Their results demonstrated that fungicide treatments often increased the duration of the grain filling period, while the effect on the rate of the grain filling period was small and inconsistent.…”
mentioning
confidence: 99%
“…Similar to other stresses, drought is also responsible for generation of oxidative species , which damage the membranous structures of the plant (Farooq et al, 2012). Cytokinins and minerals such as potassium, calcium, and magnesium help to remove these oxidative species through activation of the antioxidant system (Banowetz, 1998), but shortage in soil water rapidly decreases the endogenous level of cytokinin (Yasmeen et al, 2013a;2013b), which may be due to reduction in cytokinin biosynthesis (Pospíš ilová et al, 2000). However, the hormonal status of plant cells might be balanced by exogenous application of cytokinin during water stress (Yasmeen et al, 2013a;2013b).…”
Section: Introductionmentioning
confidence: 99%