Effects of Waterlogging on Growth and Development of Bread Wheat Genotypes

Pais, Isabel P.; Moreira, Rita; Semedo, José N.; Reboredo, Fernando H.; Lidon, Fernando C.; Maçãs, Benvindo

doi:10.3390/iecps2021-11989

Cited by 3 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding tiller number, waterlogging generated decreases (although at different times) in all genotypes, except for PL-1 and Austrl-2, which remained stable. This reduction is consistent with results reported by several authors [17,19,32,40,41,42,43]. However, variability in response to waterlogging was observed.…”

Section: Discussionsupporting

confidence: 93%

Waterlogging Effects in Adventitious Roots, Tillering and Yield of Bread Wheat Germplasm

Pais

2023

ARTOAJ

View full text Add to dashboard Cite

In the context of climate changes, expected increases in intensity, frequency, and unpredictability of waterlogging events will aggravate wheat yield losses, currently estimated to range between 20-50%. Wheat production must fulfill ca. 20% of the population’s energy and protein requirements. Evaluating germplasm with different backgrounds may reveal variability for waterlogging tolerance, allowing a better selection of genotypes with desirable traits for wheat breeding programs. In this work, the effect of waterlogging on adventitious root emission, tiller survival and yield was evaluated. Five studied germplasm groups (Portuguese Landraces; Varieties with introduced Italian germplasm; Post-Green Revolution varieties with introduced CYMMIT germplasm; Advanced Lines from the Portuguese Cereal Breeding Program; Australian varieties) were studied. Groups exhibited intra and intervariability in all parameters in response to waterlogging imposed in climatized growth chambers. After 14 days of waterlogging, the number of adventitious roots ranged from 0 to 7.6 plant-1, with 4 Portuguese Landraces depicting the highest number. The number of living tillers at the end of the stress was highly variable, ranging from reductions of 100% to increases up to 35%. At harvest, the number of productive tillers significantly differed among genotypes, with reductions reaching 100% in some cases and increases up to 138% in others. The existence of variability and the identification of key traits underlying waterlogging tolerance will contribute to develop more adapted wheat plants and to improve wheat yield.

show abstract

Section: Discussionsupporting

confidence: 93%

Waterlogging Effects in Adventitious Roots, Tillering and Yield of Bread Wheat Germplasm

Pais

2023

ARTOAJ

View full text Add to dashboard Cite

show abstract

“…This decline, together with the overall wilting of the plant and the senescence of the basal leaves, significantly reduces the area available for light absorption and limits photoassimilation. In bread wheat, chlorotic dry mass increased from 8–21% in non-waterlogged plants to 33–70% in 14-days-waterlogged plants [ 82 ]. During the recovery period this trend was maintained, with control plants exhibiting lower chlorotic dry mass values (14–36% and 18–43% at 7- and 14-days recovery, respectively) than treated plants (37–95% and 49–100% for the same recovery periods).…”

Section: Plant Responses To Waterloggingmentioning

confidence: 99%

Wheat Crop under Waterlogging: Potential Soil and Plant Effects

Pais

Moreira

Semedo

et al. 2022

Plants

Self Cite

View full text Add to dashboard Cite

Inundation, excessive precipitation, or inadequate field drainage can cause waterlogging of cultivated land. It is anticipated that climate change will increase the frequency, intensity, and unpredictability of flooding events. This stress affects 10–15 million hectares of wheat every year, resulting in 20–50% yield losses. Since this crop greatly sustains a population’s food demands, providing ca. 20% of the world’s energy and protein diets requirements, it is crucial to understand changes in soil and plant physiology under excess water conditions. Variations in redox potential, pH, nutrient availability, and electrical conductivity of waterlogged soil will be addressed, as well as their impacts in major plant responses, such as root system and plant development. Waterlogging effects at the leaf level will also be addressed, with a particular focus on gas exchanges, photosynthetic pigments, soluble sugars, membrane integrity, lipids, and oxidative stress.

show abstract

“…Waterlogging hampers the gas exchanges between plant roots and the atmosphere [10], depriving plants of oxygen, impairing their ability to absorb nutrients and water, and decreasing their growth [2,7,11]. Under these circumstances, several vital metabolic processes like respiration, which is crucial for energy production, are inhibited, and plants use the available energy to survive, depicting a height decrease, lower biomass accumulation, and premature senescence [9,12,13]. The energy deficiency and disturbances in root hydraulic conductance also affect transpiration balance and photosynthetic activity.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Impact of Growth Traits on the Yield of Bread Wheat Germplasm Subjected to Waterlogging

Pais,

Moreira,

Coelho

et al. 2024

Agriculture

Self Cite

View full text Add to dashboard Cite

Changes in the climate have led to the occurrence of extreme events that threaten the production of major crops, namely that of bread wheat (Triticum aestivum L.). Waterlogging imposed at the tillering stage can severely affect the yield, but several genotype features may counterbalance the negative impacts on yields. The aim of this work was to evaluate the effect of waterlogging on the number of fertile spikes, kernels per plant, and single kernel weight, as well as to assess the main culm and tiller participation in yields. We also investigated if the growth stages affected by stress would influence such traits. The study was conducted in climatized growth chambers using 23 genotypes from five distinct germplasm groups (Portuguese landraces, varieties with the introduced Italian germplasm, post-Green Revolution varieties with the introduced CIMMYT germplasm, advanced lines from the Portuguese wheat breeding program, Australian varieties). Variability was observed between and within the groups. Ten genotypes performed well under waterlogged conditions, showing promising results. Among these, GR-2 showed a rise in tiller yield, AdvL-3 in both the main culm and tiller yield, and the remaining ones displayed unaltered values in both the main culm and tillers. PL-1, PL-5, GR-1, GR-3, AdvL-2, Austrl-2, and Austrl-4 were able to compensate for the decreases observed for several traits, reaching harvest yield values that were unaffected in both the main culm and tillers. Rises in the tiller yield or in the tillers and main culm, GR-2 and AdvL-3 exhibited either stability or increases in all the studied parameters. Results also suggest a negative correlation between the growth stage reached during waterlogging and the effect of this stress on the number of spikes per plant, plant and tiller yield, kernel per spike (tillers), and single kernel weight (tillers). Our findings may contribute to a better understanding of wheat responses to waterlogging and to the development of solutions that mitigate the socio-economic impacts of 20–50% wheat yield reductions, thereby preserving the daily 20% supply of energy and protein required for human nutrition and global food security.

show abstract

Effects of Waterlogging on Growth and Development of Bread Wheat Genotypes

Cited by 3 publications

References 16 publications

Waterlogging Effects in Adventitious Roots, Tillering and Yield of Bread Wheat Germplasm

Waterlogging Effects in Adventitious Roots, Tillering and Yield of Bread Wheat Germplasm

Wheat Crop under Waterlogging: Potential Soil and Plant Effects

Unveiling the Impact of Growth Traits on the Yield of Bread Wheat Germplasm Subjected to Waterlogging

Contact Info

Product

Resources

About