Response of maize leaf photosynthesis to low temperature during the grain-filling period

Effects of Low Temperature on Leaf Anatomy and Photosynthetic Performance in Different Genotypes of Wheat Following a Rice Crop

“…A decrease in Fv/Fm could be the result of photochemical damage in the PSII reaction center, but could also be the result of photoprotection, which is the dissipation of nonphotochemical energy (Demmig and Björkman, 1987). The Fv/Fm is having been used to identify cold tolerance in a variety of plants (Ying et al, 2000;Perks et al, 2004). In our experiments, Fv/Fm showed a decreasing trend after low temperature treatment at both tillering and stem elongation stages, and was significantly different before and after treatment, indicating that PSII photochemical efficiency in the tested wheat leaves decreased after exposure to low temperature stress.…”

Grain Yield Determination and Resource Use Efficiency in Maize Hybrids Released in Different Decades

“…On the contrary, shoot biomass has increased while harvest index have remained constant in maize hybrids released in Canada and the US in different decades [1; 12]. Most of the shoot biomass accumulation increments in those hybrids, occurred during the grain-filling period [13; 14]; and they were mainly associated with an increased capacity of maintaining higher leaf photosynthetic rate of green leaf area (i.e., functional "stay green") during the grain-filling period [15][16][17]. The next sections will review the main processes influencing grain yield numerical components determination (i.e.…”

Influence Of Meteorological Factors On Maize Performance In Latvia

“…However, Ying et al (2000) found that maize hybrids during grain filling differed essentially in the leaf carbon exchange rate response to cold night temperatures. Autumn frosts can also stop maize development in September, as occurred in 2005, which was one of four years when mean ear proportion was less than 50% (49.5%).…”