Effective Selection Indices for Improving Tolerance to Water Stress in Millet Germplasm

Vaezi, Hossein; Mohammadi-Nejad, Ghasem; Majidi-Heravan, Eslam; Nakhoda, Babak; Darvish-Kajouri, Farokh

doi:10.1007/s42106-019-00070-8

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…The genotypic variability and genotype x treatment interactions of these traits were highly significant, as evident from ANOVA. These results were in agreement with the earlier studies in the contrasting genotypes of rice, wheat, pearl millet, foxtail millet and other plants under drought or salinity stress (Krishnamurthy et al 2016;Lapuimakuni et al 2018;Singh et al 2015;Vaezi et al 2020). In the present study, 33 genotypes of pearl millet were ranked according to salt tolerance potential based of visual symptoms of salt injury as per the standard evaluation system (Negrão et al 2017).…”

Section: Discussionsupporting

confidence: 93%

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Evaluation of Multiple Salinity Tolerance Indices for Screening and Comparative Biochemical and Molecular Analysis of Pearl Millet [Pennisetum glaucum (L.) R. Br.] Genotypes

Jha

Singh

Chouhan

et al. 2021

J Plant Growth Regul

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Salinity is a major constraint for plant growth, development and yield worldwide. Evaluation of a large number of germplasms in salt-stressed environments may help identify superior salt-tolerant genotypes. The present study dissects the genetic diversity of 33 pearl millet genotypes (landraces and inbred lines) for salinity tolerance through in vitro screening at the seedling stage. Our results revealed a significant reduction in total biomass and shoot growth of the salt-sensitive genotypes upon exposure to 150 mM NaCl, in contrast to the tolerant genotypes showing better growth characteristics. A significant differential effect of salt treatment on morphological traits was observed by analysis of variance (ANOVA), confirming substantial genetic diversity among all genotypes for salt tolerance. The genotypes were clustered into three groups based on multiple stress indices. The genotypes were also evaluated using principal component analysis (PCA) to identify the key contributing traits for stress tolerance. Based on these results, a total of four contrasting genotypes were selected for further biochemical and molecular analysis. Physiological studies confirmed that salt tolerance might be due to the higher content of osmolytes and the activity of antioxidant enzymes. Similarly, gene expression profiling of catalase (CAT), glutamate dehydrogenase (GDH), glutathione reductase (GR), and nitrate reductase (NR) revealed a profound increase in NR and GDH transcript levels in the tolerant genotypes, suggesting their major role as reactive oxygen species (ROS) scavengers under salinity. The overall findings of this study could be utilized further for candidate gene mining through "omics" approaches, aiming toward development of salinity resilient crop plants.

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Section: Discussionsupporting

confidence: 93%

“…(Ahmad et al 2008;Singh et al 2015;Zeng 2005). Moreover, PCA analysis was successfully used in the present study for identification of the key attributes contributing to stress tolerance, as reported earlier (Lapuimakuni et al 2018;Vaezi et al 2020).…”

Section: Discussionsupporting

confidence: 56%

Evaluation of Multiple Salinity Tolerance Indices for Screening and Comparative Biochemical and Molecular Analysis of Pearl Millet [Pennisetum glaucum (L.) R. Br.] Genotypes

Jha

Singh

Chouhan

et al. 2021

J Plant Growth Regul

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“…This criterion confirms that the STI and MP can select acid-tolerant hybrids with high yields under both optimal and acidic conditions. The previous studies on millet [29], spring wheat [30], and rice [31] used STI and MP to determine the tolerant genotype with high Yp and Ys.…”

Section: Correlation Analysismentioning

confidence: 99%

Identification of maize genotypes tolerance to acid soil stress using multiple criteria

Priyanto,

Suriani,

Zainuddin

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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This study aims to select maize hybrids that can tolerate acidic soil stress using several tolerance indexes. The research took place at two sites. Muneng Experimental Farm has average soil (pH=6.8), and Moncongloe Experimental Farm has acid soil (pH=5.8) from January to April 2023. A Randomized Complete Block Design (RCBD) was employed to organize ten maize hybrids, namely TH 1, TH 2, TH 3, TH 4, TH 5, TH 6, TH 7, TH 8, NK 6172, and P 32, each replicated three times. The variable observation was yield, standardized to 15% moisture content. To determine the tolerance of maize, six tolerance indexes were applied: The Stress Tolerant Index (STI), the Stress Susceptibility Index, the Mean Productivity (MP), the Harmonic Mean, the Stress Relative index (SI), and the Stress Susceptibility Percentage Index (SSPI). The result showed that hybrids that tolerate acidic soil are TH 1 and TH 2, as indicated by their average rating and standard deviation. In contrast, TH 5 and TH 7 hybrids are sensitive to acidic soil conditions. The STI and MP are suitable tolerant indexes that can select acid-tolerant hybrids with high yields under optimum and acidic conditions.

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“…So far, there is a lack of quantitative evaluation method for abscission sensitivity in cotton against TDZ treatment.The fuzzy comprehensive evaluation method has been applied to plant stress researches [ 18 , 19 ], and the method transforms qualitative evaluation into quantitative evaluation according to the membership theory of fuzzy mathematics. Membership function value (MFV) analysis was used to evaluate salt tolerance germplasm, selecting the optimal salt concentration and the reliable salt tolerance indexes in Brassica napus [ 20 ], Gossypium hirsutum L [ 21 ], and Sorghum bicolor (L.) [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…Membership function value (MFV) analysis was used to evaluate salt tolerance germplasm, selecting the optimal salt concentration and the reliable salt tolerance indexes in Brassica napus [ 20 ], Gossypium hirsutum L [ 21 ], and Sorghum bicolor (L.) [ 22 ]. MFV analysis was also applied to assess drought tolerance in Triticum aestivum L. [ 23 ] and Millet Germplasm ( Panicum miliaceum and Setaria italica ) [ 19 ]. In the current study, MFV analysis was applied to understand the sensitivity of cotton cultivars to defoliation against TDZat the seedling stage.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Cotton (Gossypium hirsutum L.) Leaf Abscission Sensitivity Triggered by Thidiazuron through Membership Function Value

Jin

Gui

et al. 2020

Plants

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Chemical defoliation is an essential agricultural practice in cotton production for mechanic harvesting. Thidiazuron (TDZ) is the active ingredient of the chemical defoliant used on cotton. So far, few studies havefocused on the method of identifying the sensitivity of cotton cultivars to TDZ. Therefore, a greenhouse soil culture experiment was performed by using two widely cultivatedupland cotton cultivars CRI 49 and CRI 12 treated with seven different concentrations (0, 100, 200, 300, 400, 500, and 1000 mg L−1) of TDZ at the seedling stage to establish a screening system. Principal component analysis and the membership function value (MFV) method was used to analyze the physiological and phenotypic characters, including abscission rate, amino acids content, net photosynthetic rate (Pn), etc. Finally, we developed a mathematical evaluation model, selected 100 mg L−1 TDZ as the optimal concentration and identified reliable characters net photosynthetic rate (Pn), stomatal conductance (Gs), and transpiration rate (Tr) to evaluate cotton leaf abscission sensitivity. These results also confirmed that CRI 12 was more sensitive to TDZ than CRI 49. This is the first time using a mathematical evaluation method to evaluate the cotton leaf abscission sensitivity triggered by TDZ at the seedling stage and the results were also confirmed in the field experiment. Furthermore, it will be valuable that MFV method is applied to stress sensitivity evaluation in other crop species under stress environment.

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Effective Selection Indices for Improving Tolerance to Water Stress in Millet Germplasm

Cited by 11 publications

References 20 publications

Evaluation of Multiple Salinity Tolerance Indices for Screening and Comparative Biochemical and Molecular Analysis of Pearl Millet [Pennisetum glaucum (L.) R. Br.] Genotypes

Evaluation of Multiple Salinity Tolerance Indices for Screening and Comparative Biochemical and Molecular Analysis of Pearl Millet [Pennisetum glaucum (L.) R. Br.] Genotypes

Identification of maize genotypes tolerance to acid soil stress using multiple criteria

Evaluation of Cotton (Gossypium hirsutum L.) Leaf Abscission Sensitivity Triggered by Thidiazuron through Membership Function Value

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