Polyethylene Glycol Mediated Osmotic Stress Impacts on Growth and Biochemical Aspects of Wheat (Triticum aestivum L.)

Faisal, Summiya; Mujtaba, S. M.; Asma, -; Mahboob, Wajid

doi:10.1007/s12892-018-0166-0

Cited by 26 publications

(18 citation statements)

References 31 publications

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“…PEG molecules are inert in nature, non-ionic, and induce uniform drought stress without entering the plant cells [ 19 ]. Many early drought screening studies had also involved PEG-6000 solutions for induction of dehydration or drought under controlled environments [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. However, in the context of this paper, we will use the terminology ‘PEG-induced drought’.…”

Section: Introductionmentioning

confidence: 99%

“…PEG-6000 induced drought can alter many morphological, phenological, and physiological characters of wheat seedlings. Seedling’s shoot and root length and biomasses were reduced with a decrease in osmotic potential [ 25 ]. Other researchers [ 27 , 28 , 29 ] also assessed the decline in the growth, length, and weight of seedlings in PEG-induced drought conditions.…”

Section: Introductionmentioning

confidence: 99%

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Multivariate Analysis of Morpho-Physiological Traits Reveals Differential Drought Tolerance Potential of Bread Wheat Genotypes at the Seedling Stage

Mohi-Ud-Din

Hossain

Rohman

et al. 2021

Plants

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Drought is one of the foremost environmental stresses that can severely limit crop growth and productivity by disrupting various physiological processes. In this study, the drought tolerance potential of 127 diverse bread wheat genotypes was evaluated by imposing polyethylene glycol (PEG)-induced drought followed by multivariate analysis of several growth-related attributes. Results showed significant variations in the mean values of different morpho-physiological traits due to PEG-induced drought effects. Correlation analysis revealed that most of the studied traits were significantly correlated among them. The robust hierarchical co-clustering indicated that all the genotypes were clustered into four major groups, with cluster 4 (26 genotypes) being, in general, drought-tolerant followed by cluster 1 (19 genotypes) whereas, cluster 2 (55 genotypes) and 3 (27 genotypes) being drought-sensitive. Linear discriminant analysis (LDA) confirmed that around 90% of the genotypes were correctly assigned to clusters. Squared distance (D2) analysis indicated that the clusters differed significantly from each other. Principal component analysis (PCA) and genotype by trait biplot analysis showed that the first three components accounted for 71.6% of the total variation, with principal component (PC) 1 accounting for 35.4%, PC2 for 24.6% and PC3 for 11.6% of the total variation. Both PCA and LDA revealed that dry weights, tissue water content, cell membrane stability, leaf relative water content, root-shoot weight ratio and seedling vigor index played the most important discriminatory roles in explaining drought tolerance variations among 127 wheat genotypes. Our results conclude that the drought-tolerant and -sensitive wheat genotypes identified in this study would offer valuable genetic tools for further improvement of wheat productivity in arid and semi-arid regions during this time of unpredictable climate change.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multivariate Analysis of Morpho-Physiological Traits Reveals Differential Drought Tolerance Potential of Bread Wheat Genotypes at the Seedling Stage

Mohi-Ud-Din

Hossain

Rohman

et al. 2021

Plants

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“…Several drought stress experiments in wheat were focused on the post-anthesis and/or reproduction stage [32,45] due to its imminent importance to grain yield [46]. An accumulation of evidence suggested that drought stress screening at the early growth stage hydroponically in the growth chamber [43,47] and soil conditions in the greenhouse [48][49][50][51] enables us to better define the drought stress and manage a large set of genotypes under controlled growing conditions. Though using hydroponic nutrient solution does not represent the actual field condition, it is still viable and used in drought stress screening at the vegetative stage [42,[52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Physio-Morphological and Biochemical Trait-Based Evaluation of Ethiopian and Chinese Wheat Germplasm for Drought Tolerance at the Seedling Stage

Belay

Zhengbin

2021

Sustainability

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For Ethiopia’s wheat production, drought is a major natural disaster. Exploration of drought-resistant varieties from a bulk of wheat germplasm conserved in the gene bank is of paramount importance for breeding climate change-resilient modern cultivars. The present study was aimed at identifying the best performing drought-resistant genotypes under non-stress and polyethylene glycol simulated (PEG) stress conditions in a growth chamber. Forty diverse Ethiopian bread and durum wheat cultivars along with three Chinese bread wheat cultivars possessing strong drought resistance and susceptibility were evaluated. After acclimation with the natural environment, the seedlings were imposed to severe drought stress (20% PEG6000), and 15 seedling traits including photosynthetic and free proline were investigated. Our findings indicated that drought stress caused a profound decline in plant water consumption (83.0%), shoot fresh weight (64.9%), stomatal conductance (61.6%), root dry weight (55.2%), and other investigated traits except root to shoot length ratio and proline content which showed a significant increase under drought stress. A significant and positive correlation was found between photosynthetic pigments in both growth conditions. Proline exhibited a negative correlation with most of the investigated traits except root to shoot length ratio and all photosynthetic pigments which showed a positive and non-significant association. Our result also showed a wide range of genetic variation (CV) ranging from 3.23% to 47.3%; the highest in shoot dry weight (SDW) (47.3%) followed by proline content (44.63%) and root dry weight (36.03%). Based on multivariate principal component biplot analysis and average sum of ranks (ASR), G12, G16 and G25 were identified as the best drought tolerant and G6, G42, G4, G11, and G9 as bottom five sensitive. The potential of these genotypes offers further investigation at a molecular and cellular level to identify the novel gene associated with the stress response.

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“…PEG bersifat mempertahankan potensial osmotik sehingga dapat digunakan sebagai pembatas kadar air pada medium perkecambahan (Widoretno, 2011). Seleksi pada tahap perkecambahan benih dan pertumbuhan bibit sangat penting karena merupakan salah satu tahapan paling kritis sehingga kekeringan dapat menjadi pembatas pertumbuhan tanaman (Faisal et al, 2019).…”

Section: Pendahuluanunclassified

Penapisan toleransi kekeringan padi lokal Lampung pada fase perkecambahan

Chrisnawati¹,

Yulianty

Ernawiati

et al. 2021

JBIOUNUD

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Perkecambahan benih merupakan salah satu tahapan paling kritis dalam pertumbuhan tanaman. Penapisan di tahap ini dapat menjadi informasi awal terhadap toleransi kekeringan. Tujuan penelitian ini adalah mengevaluasi toleransi kekeringan pada padi lokal Lampung varietas Lumbung Sewu Cantik pada fase perkecambahan. Penelitian ini menggunakan Rancangan Acak Lengkap dengan tiga konsentrasi PEG dengan tiga ulangan. Konsentrasi PEG yang diberikan yaitu 0%, 10% dan 20%. Data hasil pengamatan dianalisis ragam pada taraf a uji = 0.05 dan analisis lanjut menggunakan uji Duncan’s Multiple Range Test (DMRT). Hasil pengamatan menunjukkan bahwa semakin tinggi konsentrasi PEG membuat panjang plumulae dan panjang akar seminal padi semakin menurun. Namun, pada radikula, pemberian PEG 20% tidak menurunkan pertumbuhan panjang. Pemberian PEG dengan konsentrasi 20% juga tidak membuat berat kering radikula menurun dan pada akar seminal juga tidak ada perbedaan berat yang signifikan antara pemberian PEG konsentrasi 10% dan 20%. Hal ini menunjukkan bahwa Padi Lumbung Sewu Cantik memiliki potensi toleran terhadap kekeringan pada fase perkecambahan.

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Polyethylene Glycol Mediated Osmotic Stress Impacts on Growth and Biochemical Aspects of Wheat (Triticum aestivum L.)

Cited by 26 publications

References 31 publications

Multivariate Analysis of Morpho-Physiological Traits Reveals Differential Drought Tolerance Potential of Bread Wheat Genotypes at the Seedling Stage

Multivariate Analysis of Morpho-Physiological Traits Reveals Differential Drought Tolerance Potential of Bread Wheat Genotypes at the Seedling Stage

Physio-Morphological and Biochemical Trait-Based Evaluation of Ethiopian and Chinese Wheat Germplasm for Drought Tolerance at the Seedling Stage

Penapisan toleransi kekeringan padi lokal Lampung pada fase perkecambahan

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