Evaluation of drought tolerance in three commercial pomegranate cultivars using photosynthetic pigments, yield parameters and biochemical traits as biomarkers

2022 ◽  
Vol 261 ◽  
pp. 107357
Author(s):  
Seyed Morteza Zahedi ◽  
Marjan Sadat Hosseini ◽  
Naghmeh Daneshvar Hakimi Meybodi ◽  
Javier Abadía ◽  
Mateja Germ ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Photosynthetic Pigments ◽  
Biochemical Traits ◽  
Yield Parameters

scholarly journals Screening of Provitamin-A Maize Inbred Lines for Drought Tolerance Using β-carotene Content: Morphophysiological and Biochemical Traits

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 692 ◽  
Author(s):  
Aleck Kondwakwenda ◽  
Julia Sibiya ◽  
Rebecca Zengeni ◽  
Cousin Musvosvi ◽  
Samson Tesfay
Keyword(s):  
Drought Tolerance ◽  
Vitamin A Deficiency ◽  
Inbred Lines ◽  
Sub Saharan Africa ◽  
Provitamin A ◽  
Biochemical Traits ◽  
Carotene Content ◽  
Maize Productivity ◽  
Sub Saharan ◽  
Β Carotene

Provitamin A maize (Zea mays L.) biofortification is an ideal complementary means of combating vitamin A deficiency (VAD) in sub-Saharan Africa where maize consumption is high coupled by high VAD incidences. However, drought remains a major abiotic constraint to maize productivity in this region. Comprehensive drought screening of initial breeding materials before advancing them is important to achieve genetic gain. In this study, 46 provitamin-A inbred lines were screened for drought tolerance in the greenhouse and field under drought and optimum conditions using β-carotene content (BCC), grain yield (GY), and selected morphophysiological and biochemical traits. The results revealed that BCC, morphophysiological and biochemical traits were effective in discriminating among genotypes. Number of ears per plant (EPP), stomatal conductance (Gs), delayed leaf senescence (SEN), leaf rolling (RL), chlorophyll content (CC) and free proline content (PC) proved to be ideal traits to use when indirectly selecting for GY by virtue of having relative efficiency of indirect selection values that are greater than unity and considerable genetic variances under either or both conditions. The findings of this study form the basis of initial germplasm selection when improving provitamin A maize for drought tolerance.

scholarly journals Water extraction under terminal drought explains the genotypic differences in yield, not the anti-oxidant changes in leaves of pearl millet (Pennisetum glaucum)

2013 ◽  
Vol 40 (1) ◽  
pp. 44 ◽  
Author(s):  
Jana Kholová ◽  
Vincent Vadez
Keyword(s):  
Drought Tolerance ◽  
Soil Water ◽  
Pearl Millet ◽  
Water Status ◽  
Water Extraction ◽  
Biochemical Traits ◽  
Stay Green ◽  
Soil Water Status ◽  
Plant Soil ◽  
Terminal Drought

Pearl millet (Pennisetum glaucum (L.) R.Br.) is a resilient crop suiting the harshest conditions of the semi-arid tropics, in which we assessed possible relationships between crop tolerance, anti-oxidative enzyme activity and plant/soil water status. Biochemical acclimation and cell homeostasis traits have been proposed as critical for the drought tolerance of crops, but their limited practical application in breeding so far suggests that the role of biochemical acclimation for drought tolerance is still unclear. Previous research may have been of limited value because it has not approached biochemical acclimation from the angle of plant water relations. Four pearl millet genotypes, contrasting for terminal drought tolerance, were evaluated (sensitive H77/833–2, tolerant PRLT2/89–33 and two near isogenic lines carrying a terminal drought tolerance quantitative trait locus) under water-stress (WS) and well-watered (WW) conditions in a lysimetric system that simulates field-like conditions. We assessed the genotypic variation and relationship between photosynthetic pigments (chlorophylls a and b and carotenoids), antioxidative isoenzymatic spectrum (superoxide dismutase, ascorbate peroxidase and catalase), physiological traits (soil moisture available, normalised transpiration, stay-green score and water extraction) and biomass and yield. Biochemical traits investigated were tightly related among each other under WS conditions but not under WW conditions. Two major ascorbate peroxidase isoforms (APX6&7), whose variation in both water regimes reflected the presence/absence of the drought tolerance quantitative trait locus, were identified, but these did not relate to yield. Both, yield and biochemical traits under terminal drought stress were closely related to the traits linked to plant/soil water status (soil moisture available, normalised transpiration, stay-green score and water extraction), whereas yield and the biochemical indicators were not correlated, except for one. It is concluded that there is no direct effect of biochemical traits on yield parameters since both are consequences of soil-plant water status and their putative relation appear to be secondary – through plant/soil water status.

scholarly journals Effect of Herbicide (Quizalofop-p-Ethyl) on Growth, Photosynthetic Pigments, Enzymes and Yield Responses of Blackgram (Vigna mungo L.)

2014 ◽  
Vol 9 ◽  
pp. 58-65 ◽  
Author(s):  
T. Mahakavi ◽  
R. Bakiyaraj ◽  
L. Baskaran ◽  
Nusrat Rashid ◽  
K. Sankar Ganesh
Keyword(s):  
Adverse Effect ◽  
Weed Control ◽  
Photosynthetic Pigments ◽  
Recent Experiment ◽  
Summer Season ◽  
Vigna Mungo ◽  
Black Gram ◽  
Herbicide Application ◽  
Yield Parameters ◽  
Yield Responses

The recent experiment was conducted to assess the effect of herbicide (quizalafop-p-ethyl) on growth, photosynthetic pigments, enzymes and yield of Black gram (Vigna mungo L.) during the summer season 2013-2014. This experiment comprised black gram (variety ADT 3) and different concentrations of herbicide (quizalafop-p-ethyl) treatments compared with control. Reduction in growth, photosynthetic pigments, enzymes and yield parameters were observed with 0.5 % herbicide application followed by 1 %, 1.5 % and 2 %, out of all treatments 0.5 % shows least reduction. Thus, 0.5 % herbicide application is the safest way for weed control in Black gram field as it showed least adverse effect on growth, photosynthetic pigments, enzymes and yield of crop when compared with other treatments.

scholarly journals Dissection of Drought Tolerance in Upland Cotton Through Morpho-Physiological and Biochemical Traits at Seedling Stage

2021 ◽  
Vol 12 ◽  
Author(s):  
Zobia Zahid ◽  
Muhammad Kashif Riaz Khan ◽  
Amjad Hameed ◽  
Muhammad Akhtar ◽  
Allah Ditta ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Principal Component ◽  
Field Capacity ◽  
Seedling Stage ◽  
Physiological Traits ◽  
Genotypic Differences ◽  
Biochemical Traits ◽  
Drought Tolerant ◽  
Wide Range ◽  
Physiological And Biochemical

Cotton is an important fiber and cash crop. Extreme water scarceness affects the growth, quality, and productivity of cotton. Water shortage has threatened the future scenario for cotton growers, so it is imperative to devise a solution to this problem. In this research, we have tried to machinate a solution for it. 23 genotypes have been screened out against drought tolerance at the seedling stage by evaluating the morphological, physiological, and biochemical traits in a triplicate completely randomized design plot experiment with two water regimes [50 and 100% field capacity]. Genotypic differences for all the morphological and physiological traits revealed highly significant differences except transpiration rate (TR). Moreover, the interaction between genotype and water regime (G × W) was highly significant for root length (RL, 5.163), shoot length (SL, 11.751), excised leaf water loss (ELWL, 0.041), and stomatal conductance (SC, 7.406). A positively strong correlation was found in TR with relative water content (RWC; 0.510) and SC (0.584) and RWC with photosynthesis (0.452) under drought conditions. A negative correlation was found in SC with SL (−0.428) and photosynthesis (−0.446). Traits like RL, SL, SC, photosynthesis, proline, catalase, and malondialdehyde were visible indicators, which can differentiate drought-tolerant genotypes from the susceptible ones. A wide range of diversity was found in all the morpho-physiological traits with the cumulative variance of four principal components (PCs) 83.09% and three PCs 73.41% under normal and water-stressed conditions, respectively, as per the principal component analysis. Hence, selection criteria can be established on the aforementioned traits for the development of drought-tolerant cultivars. Moreover, it was found that out of 23 experimental varieties, NIAB-135, NIAB-512, and CIM-554 could be used to devise breeding strategies for improving drought tolerance in cotton.

Screening of maize (Zea mays L.) genotypes for drought tolerance using photosynthetic pigments and anti-oxidative enzymes as selection criteria

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Ambreen Khadija Alvi ◽  
Muhammad Sajid Aqeel Ahmad ◽  
Tanzila Rafique ◽  
Mehwish Naseer ◽  
Fozia Farhat ◽  
...  
Keyword(s):  
Zea Mays ◽  
Drought Tolerance ◽  
Photosynthetic Pigments ◽  
Selection Criteria ◽  
Zea Mays L ◽  
Oxidative Enzymes
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