Effects of Drought Stress on Chlorophyll Fluorescence Parameters, Chlorophyll Content and Grain Yield of Wheat Cultivars

Paknejad, Farzad; Heravan, E Majidi; Ghorban, Nourmohammadi; Siadat, A A; Vazan, S

doi:10.3923/jbs.2007.841.847

Cited by 84 publications

(42 citation statements)

References 7 publications

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“…Several researchers have reported positive correlations of CTD with grain yields of wheat (Blum et al, 1989;Amani et al, 1996;Reynolds et al, 1998;Ayeneh et al, 2002;Balota et al, 2007;Thapa et al, 2018), and their results corroborate the results for sugarcane in the present study. F v /F m had the highest correlation with the grain yield of wheat under drought stress (Paknejad et al, 2007), and the same trend was observed in this study under limited irrigation.…”

Section: Discussionsupporting

confidence: 89%

Physiological Efficiency of Sugarcane Clones under Water-Limited Conditions

kumar¹,

Vasantha²,

Tayade³

et al. 2020

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Collection HIGHLIGHTS `Significant reductions in canopy temperature depression (CTD), chlorophyll fluorescence (F v /F m ), SPAD index, and leaf rolling index were observed under limited irrigation during the grand growth stage of sugarcane.  This study highlights the significance of CTD and F v /F m as useful physiological tools for selecting sugarcane clones suitable for production under water-limited conditions.  Clones Co 10026, Co 13006, Co 85019, Co 62175, Co 86010, and Co 1148 performed better under limited irrigation, and these clones can reduce the amount of irrigation water required for sugarcane production, ensuring water security.ABSTRACT. Sugarcane is one the most important commercial crops in India and globally. The annual water requirement for sugarcane ranges from about 1000 to 2900 mm, and this variation mainly depends on the agro-ecological conditions, cultivation practices, and crop cycle. In a changing climate, the delay or failure of monsoons will have a direct effect on the water available for irrigation in India. Given these constraints, sustaining sugarcane production is challenging. The ICAR-Sugarcane Breeding Institute (ICAR-SBI) in Coimbatore, India, has developed sugarcane genotypes that are resilient to drought stress. To study the role of physiological traits in identifying sugarcane varieties suitable for water-limited conditions, an experiment was conducted at ICAR-SBI with sugarcane clones in field conditions using irrigation at 100% cumulative pan evaporation (I 0 ) and with 50% reductions in the volume and frequency of irrigation (I 2 ). Physiological traits, including canopy temperature depression (CTD), chlorophyll fluorescence (F v /F m ), soil plant analysis development (SPAD) index, leaf rolling index (LRI), and cane yield, were recorded for sugarcane clones grown under I 0 and I 2 . Significant reductions of 85. 9%, 15.4%, 4.9%, 44.9%, and 56.0%, respectively, in CTD, F v /F m , SPAD index, LRI, and cane yield were found for water-limited conditions (I 2 ) compared to I 0 . F v /F m showed a decreasing trend in I 2 compared to I 0 and also showed a significant positive correlation (r = 0.43) with cane yield. CTD varied significantly between the two treatments and also showed a significant positive correlation with cane yield (r = 0.45). Both F v /F m and CTD are adaptive traits for waterlimited conditions and are useful for screening sugarcane clones suitable for water-limited conditions. Clones Co 10026, Co 13006, Co 85019, Co 62175, and Co 86010 had superior cane yields under water-limited conditions (I 2 ) and better physiological traits. Water deficit is one of the most critical abiotic stresses that affect sugarcane productivity. By growing clones that are water use efficient (Co 10026, Co 13006, Co 85019, Co 62175, and Co 86010), the irrigation water requirement can be reduced for sugarcane production in India. In addition, new sugarcane clones can be developed for waterlimited conditions by using the identified clones in breeding programs for water use efficienc...

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Section: Discussionsupporting

confidence: 89%

Physiological Efficiency of Sugarcane Clones under Water-Limited Conditions

kumar¹,

Vasantha²,

Tayade³

et al. 2020

Transactions of the ASABE

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“…The data suggest that with a smaller decrease in RWC, photochemical activity is less affected by water deficit. A similar response was observed by Liu et al (2006) and Silva et al (2007) in sugarcane, and by Paknejad et al (2007) in wheat. Under water deficit conditions, leaf RWC was significantly reduced in most genotypes, and this was associated with decreases in radiation efficiency ( F v / F m ) and productivity.…”

Section: Discussionsupporting

confidence: 87%

“…It has also been used in selecting drought-tolerant genotypes in other crops such as beans, Phaseolus vulgaris L. (Souza et al 2004), wheat, Triticum spp. (Paknejad et al 2007), subterranean clover, Trifolium subterraneum L. (Mauro et al 2011) and maize, Zea mays (Zou et al 2009). Another advantage of using F v / F m in the selection of cultivars is that this characteristic has high heritability (Zhang et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Relationships between physiological traits and productivity of sugarcane in response to water deficit

et al. 2012

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The relationships between physiological variables and sugarcane productivity under water deficit conditions were investigated in field studies during 2005 and 2006 in Weslaco, Texas, USA. A total of 78 genotypes and two commercial varieties were studied, one of which was drought-tolerant (TCP93-4245) and the other droughtsensitive (TCP87-3388). All genotypes were subjected to two irrigation regimes: a control well-watered treatment (wet) and a moderate water-deficit stress (dry) treatment for a period of 90 days. Maximum quantum efficiency of photosystem II (F v /F m ), estimated chlorophyll content (SPAD index), leaf temperature (LT), leaf relative water content (RWC) and productivity were measured. The productivity of all genotypes was, on average, affected negatively; however, certain genotypes did not suffer significant reduction. Under water deficit, the productivity of the genotypes was positively and significantly correlated with F v /F m , SPAD index and RWC, while LT had a negative correlation. These findings suggest that genotypes exhibiting traits of high RWC values, high chlorophyll contents and high photosynthetic radiation use efficiency under low moisture availability should be targeted for selection and variety development in programmes aimed at improving sugarcane for drought prone environments.

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“…Under drought conditions, F 0 may increase or decrease, while F M , F V and F V /F M all decrease. These parameters of chlorophyll fluorescence kinetics (PCFKs) and imaging are considered as very powerful and reliable indicators of the impact of various abiotic stresses, including drought, on plant physiological processes (Paknejad et al, 2007;Khayatnezhad et al, 2011;Jansen et al, 2014;Sharma et al, 2014b). Under drought conditions, crop varieties that maintain high F V /F M under water-limited conditions are considered to be stress tolerant (Zlatev, 2009), and indicate efficient protection of PSII activity.…”

Section: Chlorophyll Fluorescencementioning

confidence: 99%

A Physio-Morphological Trait-Based Approach for Breeding Drought Tolerant Wheat

et al. 2020

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In the past, there have been drought events in different parts of the world, which have negatively influenced the productivity and production of various crops including wheat (Triticum aestivum L.), one of the world's three important cereal crops. Breeding new high yielding drought-tolerant wheat varieties is a research priority specifically in regions where climate change is predicted to result in more drought conditions. Commonly in breeding for drought tolerance, grain yield is the basis for selection, but it is a complex, late-stage trait, affected by many factors aside from drought. A strategy that evaluates genotypes for physiological responses to drought at earlier growth stages may be more targeted to drought and time efficient. Such an approach may be enabled by recent advances in high-throughput phenotyping platforms (HTPPs). In addition, the success of new genomic and molecular approaches rely on the quality of phenotypic data which is utilized to dissect the genetics of complex traits such as drought tolerance. Therefore, the first objective of this review is to describe the growth-stage based physio-morphological traits that could be targeted by breeders to develop droughttolerant wheat genotypes. The second objective is to describe recent advances in high throughput phenotyping of drought tolerance related physio-morphological traits primarily under field conditions. We discuss how these strategies can be integrated into a comprehensive breeding program to mitigate the impacts of climate change. The review concludes that there is a need for comprehensive high throughput phenotyping of physio-morphological traits that is growth stage-based to improve the efficiency of breeding drought-tolerant wheat.

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Effects of Drought Stress on Chlorophyll Fluorescence Parameters, Chlorophyll Content and Grain Yield of Wheat Cultivars

Cited by 84 publications

References 7 publications

Physiological Efficiency of Sugarcane Clones under Water-Limited Conditions

Physiological Efficiency of Sugarcane Clones under Water-Limited Conditions

Relationships between physiological traits and productivity of sugarcane in response to water deficit

A Physio-Morphological Trait-Based Approach for Breeding Drought Tolerant Wheat

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