Heat tolerance in relation to acquired thermotolerance for membrane lipids in bread wheat

Dhanda, S. S.; Munjal, Renu

doi:10.1016/j.fcr.2012.06.009

Cited by 33 publications

(16 citation statements)

References 42 publications

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“…Cell membrane stability has a reasonable relationship to plant performance under heat stressed environments and has therefore been considered as a possible selection criterion for grain yield under heat stress (Blum et al, 2001). Many researchers have used cell membrane stability test to study the genetics of heat tolerance in wheat (Reynolds et al, 1994;Ibrahim and Quick, 2001;Dhanda and Munjal, 2012). In this study wheat genotypes exhibited significant differences for cell membrane stability under stress condition and genotypes with high cell membrane stability produced high grain yield.…”

Section: Discussionmentioning

confidence: 95%

“…The high value of these traits revealed that the genotypes WH1021 and Raj3765 had potent tolerance against heat stress. In bread wheat, genotypes WH1021 had significant high yield, high expression of chlorophyll fluorescence and high cell membrane stability value under heat stress condition was reported by Dhanda and Munjal (2012). The genotypes WH1155, HD1869, WH1124, HD2285, UP2425, UP2473, PBW503, PBW373 and PBW533 had significant high yield in heat stress conditions (11.17*, 9.80*, 10.58*, 9.64*, 10.93*, 10.53*, 9.81*, 11.23* and 10.43*, respectively) and significant low value for heat susceptibility index (0.59*, 0.50*, 0.59*, 0.58*, 0.39*, 0.56*, 0.58 and 0.58*, respectively).…”

Section: Temperature and Rainfall During The Seasonmentioning

confidence: 99%

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Cell membrane stability- an important criterion for selection of heat tolerant genotypes in wheat (Triticum aestivum L.)

Islam

Chhabra

Dhanda

et al. 2017

JANS

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Cell membrane stability, grain filling rate, grain filling duration, canopy temperature and grain yield were used to evaluate performance of 100 diverse bread wheat (Triticum aestivum L.) genotypes under timely sown and late sown heat stress conditions for two cropping season. The genotypes differed significantly for all the traits showing considerable variation for improvement of characters. The genotypes WH1165 had significant high grain yield (14.6* g and 11.4g) and (11.3* g and 11.4* g) followed by cell membrane stability under timely sown and heat stress conditions, respectively indicating potential tolerance against heat stress. Correlation coefficients revealed that cell membrane stability (0.451**) and (0.639**) in timely sown and in late sown conditions, respectively were the most important trait followed by grain filling rate (0.882** and 0.744**) under timely sown and late sown conditions respectively. Results revealed that bread wheat genotypes which had high value of cell membrane stability had high grain yield showed potential photorespiration and high grain filling rate under heat stress condition. Twenty two genotypes WH1021, WH1155, VL803, WH787, NW1014, Raj3765, HD1869, 2042, WH1124, HD2285, WH1133, HUW234, 4066, Sonak, UP2425, UP2473, PBW503, PBW373, PBW533, SGP13, HD2643 and WH789 were identified as heat tolerant genotypes based on their relative performance in yield components, grain yield and heat susceptibility indices. These genotypes were found to be ideal candidates to be used in developing heat tolerant wheat varieties. Canopy temperature, membrane thermostability and grain filling rate have also shown strong correlation with grain yield. Because of this association, these traits constitute the best available 'tool' for genetic improvement of wheat suitable for cultivation under heat stressed environments. Thus, these could be used as indirect selection criteria for developing heat tolerant wheat genotypes that would provide sufficient yields to meet the ever increasing wheat demand.

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Section: Discussionmentioning

confidence: 95%

Section: Temperature and Rainfall During The Seasonmentioning

confidence: 99%

Cell membrane stability- an important criterion for selection of heat tolerant genotypes in wheat (Triticum aestivum L.)

Islam

Chhabra

Dhanda

et al. 2017

JANS

Self Cite

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“…However, more research is needed to explain genetic variation in MT and its relationship with saturation/unsaturation of fatty acids (Essemine et al, 2011). The presence of both additive and dominant types of gene action has been reported for MT in wheat (Dhanda and Munjal, 2012) as well as QTL and associated simple sequence repeat markers (Ciuca and Petcu, 2009; Table I). …”

Section: Membrane Thermostabilitymentioning

confidence: 99%

Physiological Traits for Improving Heat Tolerance in Wheat

2012

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“…Presence of both additive and dominant types of gene action has been reported for membrane thermotolerance in wheat (Dhanda and Munjal 2012) as well as QTL and associated simple sequence repeat (SSR) markers (Ciuca and Petcu 2009). The overall impact of MAS on the production and release of heat-tolerant cultivars has not been significant (Tuberosa and Salvi 2006;Ortiz et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Physiological traits associated with heat tolerance in bread wheat (Triticum aestivum L.)

Pandey

Mamrutha

Tiwari

et al. 2014

Physiol Mol Biol Plants

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Field experiments for evaluating heat tolerancerelated physiological traits were conducted for two consecutive years using a mapping population of recombinant inbred lines (RILs) from the cross RAJ4014/WH730. Chlorophyll content (Chl) and chlorophyll fluorescence (CFL) were recorded under timely sown (TS) and late sown (LS) conditions. Late sowing exposes the terminal stage of plants to high temperature stress. Pooled analysis showed that CFL and Chl differed significantly under TS and LS conditions. The mean value of CFL (Fv/Fm) and Chl under both timely and late sown conditions were used as physiological traits for association with markers. Regression analysis revealed significant association of microsatellite markers viz., Xpsp3094 and Xgwm131 with coefficients of determination (R 2 ) values for CFL (Fv/Fm) and Chl as 12 and 8 %, respectively. The correlation between thousand grain weight (TGW) with Chl and CFL were 14 and 7 % and correlation between grain wt./spike with Chl and CFL were 15 and 8 %, respectively. The genotypes showing tolerance to terminal heat stress as manifested by low heat susceptibility index (HSI=0.43) for thousand grain weight, were also found having very low Chl, HSI (−0.52). These results suggest that these physiological traits may be used as a secondary character for screening heat-tolerant genotypes.

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Heat tolerance in relation to acquired thermotolerance for membrane lipids in bread wheat

Cited by 33 publications

References 42 publications

Cell membrane stability- an important criterion for selection of heat tolerant genotypes in wheat (Triticum aestivum L.)

Cell membrane stability- an important criterion for selection of heat tolerant genotypes in wheat (Triticum aestivum L.)

Physiological Traits for Improving Heat Tolerance in Wheat

Physiological traits associated with heat tolerance in bread wheat (Triticum aestivum L.)

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