Evaluating physiological traits to complement empirical selection for wheat in warm environments

Reynolds, M.P.; Singh, Rupinder Pal; Ibrahim, Ahmed A.; Ageeb, O.A.A.; Larqué-Saavedra, Alfonso; Quick, J. S.

doi:10.1007/978-94-011-4896-2_20

Cited by 100 publications

(130 citation statements)

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“…Therefore, high temperatures spell during anthesis to grain filling and upto grain maturity than optimal temperature in delay planting, deteriorate the grain quality, reduces grain yield which may exceed to 40-50% (Joshi et al, 2007) because of the less time to utilize systematically natural resources. A number of morpho-physiological traits to be associated with grain yield under heat stress, such as canopy temperature depression (CTD), cell membrane stability (CMS), and leaf chlorophyll content during grain filling, leaf conductance and photosynthesis reported by Reynolds et al (1998). It is difficult to bring progress for increasing grain number and yield components under heat stress condition as these are complex characters and largely influenced by environmental factors.…”

Section: Introductionmentioning

confidence: 99%

“…It is difficult to bring progress for increasing grain number and yield components under heat stress condition as these are complex characters and largely influenced by environmental factors. Canopy temperature depression (Reynolds et al, 1998;Bahar et al, 2011;Shefazadeh et al, 2012), cell membrane stability Munjal, 2006 andBahar et al, 2011) and chlorophyll fluorescence (Moffatt et al, 1990;Sayed, 1992) have been used as physiological screening techniques for heat tolerance. Membrane leakage is reported as a measure of stress cellular damage (Fokar et al, 1998a).…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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

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“…It has been shown that the physiological responses of plants to drought stress are extremely complex and vary with plant species as well as with the degree and time of the exposure to drought (Levitt 1980;Bennett 1990;Evans et al 1990Evans et al , 1991Jones 1993;Reynolds 2002;King 2011). Plants develop different morphological, physiological and biochemical mechanisms which inhibit or remove the harmful effects of drought stresses (Sullivan and Ross 1979;Boyer 1982;Larsson and Górny 1988;Chaves et al 2002;Reynolds et al 1998;Asharaf 2010). Drought tolerance of a plant species is usually determined by the plant's genes and also by morphological, phonological, physiological, and biochemical traits.…”

Section: Introductionmentioning

confidence: 99%

The relations between drought susceptibility index based on grain yield (DSIGY) and key physiological seedling traits in maize and triticale genotypes

et al. 2012

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The physiological reasons for the differences in sensitivity of C 3 and C 4 plant species to environmental stresses have not been thoroughly explained. In this study the effects of drought stress on the growth and selected physiological traits were examined in the seedlings of 13 single cross maize (C 4 plant) hybrids and 11 spring triticale (C 3 plant) breeding lines and varieties differing in drought sensitivity. For plants in the seedling stage the results demonstrated a genetic variation in dry matter accumulation of shoots and roots (DW S , DW R ), number (N) and length (L) of particular components (seminal, seminal adventitious, nodal) of the root system, membrane injury by soil drought (LI D ), osmotic and high temperature stress (LI OS , LI HT ), water potential (w), water loss (WL), grain germination in osmotic stress (FG, PI), and seedling survival (SS). Seedlings grown under moderate soil drought showed a decrease in dry matter of the top parts and roots and a decrease in the length of seminal, seminal adventitious and nodal roots in comparison to seedlings grown in control conditions. The observed harmful effects of drought stress were more distinct in drought sensitive genotypes. Used in this paper drought susceptibility indexes (DSI GY ) were calculated in other experiment by determining the changes in grain yield (GY) under two soil moisture levels (irrigated and drought). The variation of DSI GY for maize ranges from 0.381 to 0.650 and for triticale from 0.354 to 0.578. The correlations between DSI GY and laboratory tests (LI, FG, SS) confirmed that they are good indicators of drought tolerance in plants. The highest values of genetic variation were observed in LI, DW S , SS and WL and the lowest in the measurements of w FG, PI, L S , L SA and L N . The correlation coefficients between LI OS and LI HT tests were, in most of the considered cases, statistically significant, which indicates that in maize and triticale the mechanisms of membrane injury caused by simulated drought or high temperature are physiologically similar. It can be concluded that an approach to the breeding of maize and triticale for drought tolerance using these tests can be implemented on the basis of separate selection for each trait or for all of them simultaneously. In that case, it would be necessary to determine the importance of the trait in relation to growth phase, drought timing and level, as well as its associations with morphological traits contributing to drought tolerance. The obtained values of the correlation coefficient between laboratory tests suggest that the same physiological traits may be applied as selection criteria in drought tolerance of maize and triticale genotypes.

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“…In bread wheat under Mediterranean terminal drought stress condition, the traits considered as important for durum wheat grain yield increase were: the displacement from optimal heading date (absolute difference of days from the mean heading date of three control cultivars) and kernels per spike (ANNICCHIARICO & PECETTI, 1998); increased leaf rolling, cooler leaf canopy, longer peduncle, increased plant height and early heading (ORTIZ-FERRARA et al, 1991). Under warm northwestern México condition, above ground biomass at maturity, days from emergence to anthesis and to maturity, number of grains m -2 and ground cover estimated visually after heading showed associations with wheat grain yield (REYNOLDS et al, 1998). In India, the ear:stem ratio was not as efficient as harvest index in selecting for drought susceptible and tolerant wheat genotypes (RANE et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Plant traits to complement selection based on yield components in wheat

2005

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Evaluating physiological traits to complement empirical selection for wheat in warm environments

Cited by 100 publications

References 5 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.)

The relations between drought susceptibility index based on grain yield (DSIGY) and key physiological seedling traits in maize and triticale genotypes

Plant traits to complement selection based on yield components in wheat

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