Effect of heat stress at anthesis on yield formation in winter wheat

Hlaváčová, Marcela; Klem, Karel; Smutná, Pavlína; Škarpa, Petr; Hlavinka, Petr; Novotná, Kateřina; Rapantová, Barbora; Trnka, Miroslav

doi:10.17221/73/2017-pse

Cited by 20 publications

(8 citation statements)

References 17 publications

(13 reference statements)

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“…), singlet oxygen ( 1 O 2 * ), hydroxyl radical (OH •− ), and hydrogen peroxide overcome the synthesis of antioxidants (Kamal et al 2017;Saleem et al 2018a). This, disproportionate in synthesis of antioxidants and reactive oxygen species (ROS), increases the degradation of chlorophyll while reduces its biosynthesis and thus aggravates senescence (Hlaváčová et al 2017), whereas inhibition of activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) further worsens the oxidative damage. Consequences of these metabolic disruptions lead to grain shriveling, reduced number of grains per spike, and decreased grain yield (Anjum et al 2017a).…”

Section: •−mentioning

confidence: 99%

Exogenous Potassium–Instigated Biochemical Regulations Confer Terminal Heat Tolerance in Wheat

Shahid

Saleem

et al. 2019

J Soil Sci Plant Nutr

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Heat stress at spike initiation and flowering is chief constraint hampering the accomplishment of yield potential in wheat crop. The present study was aimed at comparing the thermo-sensitivity of terminal stages, optimizing exogenous potassium to alleviate impacts of heat and to explore biochemical attributes triggered regulations in morphological attributes of wheat. The experiment was performed at the University of Agriculture Faisalabad, Pakistan during winter 2015-2016 and 2016-2017. The experiment was laid out in Randomized Complete Block Design under split arrangement and replicated thrice. The treatments comprised of heat stress in main plots viz. H 0 = No heat imposition; H 1 = Heat stress imposition from complete emergence of spike to grain filling initiation and H 2 = Heat stress imposition from flowering initiation to grain filling initiation and exogenous potassium (K) concentrations in split plots viz. K 0 = Control (water spray); K 15 = 15 g L −1 ; K 30 = 30 g L −1 ; K 45 = 45 g L −1 , and K 60 = 60 g L −1. Under BH 0 ,^statistically similar and relatively more activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were quantified with 45 and 60 g L −1 foliar BK.^Contrarily, significantly more SOD, POD, and CAT contents were recorded with 60 g L −1 exogenous potassium under BH 1â nd BH 2^w hile significantly lesser chlorophyll a, b contents and grain yield were recorded under BH 1^c ompared to BH 0^a nd BH 2 ,ŵ hereas statistically similar and significantly more grain-filling rate (GFR) and statistically similar and significantly lesser grain filling duration (GFD) were observed under BH 1^c ompared to BH 0^B H 2 .^Exogenous application of K at 45 and 60 g L −1 depicted statistically similar and comparatively more chlorophyll a, b contents, GFR, GFD, and grain yield compared to control. Moreover, strong, positive, and significant association of antioxidants and chlorophyll contents with morphological attributes was observed. Conclusively, BH 1^p roved more deleterious compared to BH 0^a nd BH 2^a nd exogenous K at 60 g L −1 effectively alleviated adversities of heat. Moreover, K-mediated regulations in biochemical attributes improved morphological attributes of heat-stressed wheat crop.

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Section: •−mentioning

confidence: 99%

Exogenous Potassium–Instigated Biochemical Regulations Confer Terminal Heat Tolerance in Wheat

Shahid

Saleem

et al. 2019

J Soil Sci Plant Nutr

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“…The recent climatological extremes including high temperature are projected to deleteriously impact wheat growth and productivity. Terminal heat stress at the post-heading stage causes considerable yield reduction due to stress at a critical stage, i.e ., anthesis and grain filling ( Marcela et al., 2017 ). At flowering, it causes destructive impacts on pollen fertility and seed setting which lead to low grain number per spike ( Talukder et al., 2014 ; Ullah et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Assessing performance and stability of yellow rust resistance, heat tolerance, and agronomic performance in diverse bread wheat genotypes for enhancing resilience to climate change under Egyptian conditions

et al. 2022

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Yellow rust and heat stress adversatively impact the growth and production of bread wheat in particular under rising adverse environmental conditions. Stability of grain yield is a pivotal purpose of plant breeders to improve wheat production and ensure global food security especially under abrupt climate change. The objective of this study was to assess the performance and stability of diverse bread wheat genotypes for yellow rust resistance, heat stress, and yield traits. The studied genotypes were evaluated in two different locations under two sowing dates (timely and late sowing) during two growing seasons. The obtained results displayed significant differences among the tested locations, sowing dates, and genotypes for most measured traits. The yellow rust measurements evaluated under the field conditions including final rust severity (FRS), the average coefficient of infection (ACI), and area under disease progress curve (AUDPC) revealed that Giza-171, Misr-1, Gemmeiza-12, Shandweel-1, Sids-13, Line-1, Line-2, and Line-55 had better resistance. Based on heat sensitivity measurements, Line-1 and Line-2 followed by Line-35, Shandweel-1 and Line-55 were classified as more tolerant to heat stress compared with the remaining genotypes. The genotypes Line-55, Gemmeiza-12, Giza-171, Line-1, Line-2, and Misr-1 were able to maintain acceptable agronomic performance under timely and late sowing dates in all evaluated environments. Different statistical procedures were employed to explore the adaptability and stability of tested genotypes i.e., joint regression, stratified ranking, Wricke's Ecovalence values, cultivar superiority, additive main effects, and multiplicative interaction (AMMI), AMMI stability value, and genotype plus genotype-by-environment interaction (GGE). The applied stability parameters were quite similar for describing the stability of the evaluated wheat genotypes. The results indicated that Gemmeiza-12, Giza-171, Sids-12, Sids-13, Misr-1 Shandweel-1, Line-1, Line-2, and Line-55 were desirable and stable. The heatmap and hierarchical clustering were exploited for dividing the evaluated bread wheat genotypes into different clusters based on yellow rust resistance measurements, heat tolerance indices, and agronomic performance. Line-1 and Line-2 had the best performance for all rust resistance, heat tolerance, and agronomic performance followed by Giza-171, Line-55, Line-35, Gemmeiza-12, Shandweel-1, Misr-1, and Sids-13. In conclusion, our findings provide evidence of utilizing promising genotypes in rust resistance, heat tolerance, and agronomic performance in breeding programs for improving wheat grain yield stability mainly under climate change.

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“…For every 1 degree Celsius increase in temperature, there is a yield loss about 4.1 % to 6% (Ni et al, 2018). Heat stress causes pollen sterility, decreases carbon dioxide assimilation, and improves photorespiration in wheat, according to previous studies (Hlaváčová et al, 2017).According to (Wahid et al, 2007), high temperatures damage the photosynthesis process, which has a negative effect on wheat growth and yield (Asseng et al, 2011).…”

Section: High Temperature Stress/heat Stressmentioning

confidence: 77%

Effect of Abiotic Stress in Wheat: A Review

Dhakal¹,

Adhikari²,

Manandhar³

et al. 2021

Review.food.agr.

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Wheat is the staple food in the Nepalese diet, and it is grown in most part of the country during the winter seasons. This brief analysis article discusses previous research and studies on the effect of abiotic stress on wheat. Different abiotic stresses induce a number of changes in plant metabolism, and several of these changes in plant in response to different abiotic stresses overlap. stress –induced metabolic changes cause crop growth to be impaired, resulting in low yield. Abiotic stresses are also an important factor that affects yield reduction, productivity decline, and net profit shrinkage according to long term research conducted by various researchers in various location .As a result abiotic stress such as drought, salinity, acidity, water logging and heat most be effectively addressed through management practices such as tillage and planting choices, residue management, sowing time, stress resistance cultivars, irrigation scheduling and integrated nutrient management to preserve natural resources while minimizing the negative effects and ensuring long term wheat output.

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Effect of heat stress at anthesis on yield formation in winter wheat

Cited by 20 publications

References 17 publications

Exogenous Potassium–Instigated Biochemical Regulations Confer Terminal Heat Tolerance in Wheat

Exogenous Potassium–Instigated Biochemical Regulations Confer Terminal Heat Tolerance in Wheat

Assessing performance and stability of yellow rust resistance, heat tolerance, and agronomic performance in diverse bread wheat genotypes for enhancing resilience to climate change under Egyptian conditions

Effect of Abiotic Stress in Wheat: A Review

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