Effects of ambient temperature in association with photoperiod on phenology and on the expressions of major plant developmental genes in wheat (Triticum aestivum L.)
Dixon, Laura E.
MetadataShow full item record
In addition to its role in vernalization, temperature is an important environmental stimulus in determining plant growth and development. We used factorial combinations of two photoperiods (16H, 12H) and three temperature levels (11, 18 and 25 °C) to study the temperature responses of 19 wheat cultivars with established genetic relationships. Temperature produced more significant effects on plant development than photoperiod, with strong genotypic components. Wheat genotypes with PPD‐D1 photoperiod sensitive allele were sensitive to temperature; their development was delayed by higher temperature, which intensified under non‐inductive conditions. The effect of temperature on plant development was not proportional; it influenced the stem elongation to the largest extent, and warmer temperature lengthened the lag phase between the detection of first node and the beginning of intensive stem elongation. The gene expression patterns of VRN1, VRN2 and PPD1 were also significantly modified by temperature, while VRN3 was more chronologically regulated. The associations between VRN1 and VRN3 gene expression with early apex development were significant in all treatments but were only significant for later plant developmental phases under optimal conditions (16H and 18 °C). Under 16H, the magnitude of the transient peak expression of VRN2 observed at 18 and 25 °C associated with the later developmental phases.
Is part ofPlant, Cell and Environment, 2017, vol. 40, núm. 8, p. 1629-1642
European research projects
Showing items related by title, author, creator and subject.
Variation in developmental patterns among elite wheat lines and relationships with yield, yield components and spike fertility González-Navarro, Oscar E.; Griffiths, Simon; Molero, Gemma; Reynolds, Matthew P.; Slafer, Gustavo A. (Elsevier, 2016)Developmental patterns strongly influence spike fertility and grain number, which are primarily determined during the stem elongation period (i.e. time between terminal spikelet phase and anthesis). It has been proposed ...
Wheat developmental traits as affected by the interaction between Eps-7D and temperature under contrasting photoperiods with insensitive Ppd-D1 background Basavaraddi, Priyanka A.; Savin, Roxana; Bencivenga, Stefano; Griffiths, Simon; Slafer, Gustavo A. (MDPI, 2021)Earliness per se (Eps) genes are important to fine tune adaptation, and studying their probable pleiotropic effect on wheat yield traits is worthwhile. In addition, it has been shown that some Eps genes interact with ...
Dynamics of floret development determining differences in spike fertility in an elite population of wheat González Navarro, Oscar E.; Griffiths, Simon; Molero, Gemma; Reynolds, Matthew P.; Slafer, Gustavo A. (Elsevier, 2015)Further increases in wheat yield potential could be achieved through a better understanding of the dynamics of floret primordia generation/degeneration, a process which has received little attention. We quantified genotypic ...