Drought-induced Changes in Chlorophyll Stability Index, Relative Water Content and Yield of Cotton Genotypes

During postharvest, lettuce is usually exposed to adverse conditions (e.g. low relative humidity) that reduce the vegetable quality. In order to evaluate its shelf life, a great number of quality attributes must be analyzed, which requires careful experimental design, and it is time consuming. In this study, the modified Global Stability Index method was applied to estimate the quality of butter lettuce at low relative humidity during storage discriminating three lettuce zones (internal, middle, and external). The results indicated that the most relevant attributes were: the external zone - relative water content, water content , ascorbic acid, and total mesophilic counts; middle zone - relative water content, water content, total chlorophyll, and ascorbic acid; internal zone - relative water content, bound water, water content, and total mesophilic counts. A mathematical model that takes into account the Global Stability Index and overall visual quality for each lettuce zone was proposed. Moreover, the Weibull distribution was applied to estimate the maximum vegetable storage time which was 5, 4, and 3 days for the internal, middle, and external zone, respectively. When analyzing the effect of storage time for each lettuce zone, all the indices evaluated in the external zone of lettuce presented significant differences (p < 0.05). For both, internal and middle zones, the attributes presented significant differences (p < 0.05), except for water content and total chlorophyll.

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Application of Silica Gel on Growth and Yield of Camelina sativa L.

Journal of Arable Crops and Marketing ◽

10.33687/jacm.002.02.3520 ◽

2020 ◽

Vol 2 (2) ◽

pp. 71-78

Author(s):

Ehsan Ul Haq ◽

Fayyaz Ul Hassan ◽

Mukhtar Ahmed ◽

Abdul Mannan Hamzah ◽

Fahad Ali Fayyaz ◽

...

Keyword(s):

Water Content ◽

Silica Gel ◽

Relative Water Content ◽

Stability Index ◽

Camelina Sativa ◽

Shoot Length ◽

Growth And Yield ◽

Shoot Biomass ◽

Membrane Stability Index ◽

Relative Water

The present study was designed to evaluate the effect of different concentrations of Silica gel on the growth and yield of Camelina sativa. A pot experiment was laid out in Completely Randomized Design (CRD) with three replications at Nanotechnology Laboratory, Department of Agronomy, PMAS Arid Agriculture University Rawalpindi. The experiment consisted of 4 levels (0.15 mg/g, 0.30 mg/g, 0.45 mg/g and 0.60 mg/g) of each mentioned nutrient along with control. The data were recorded and analyzed according to recommended procedure for following parameters viz., germination %, root and shoot length (cm), root and shoot biomass (g), relative water content of leaf and leaf membrane stability index. It was observed that 0.60 mg/g silica gel application increased the seed germination (80%), root length (6.67) cm, shoot length (35.33) cm, root biomass (1.7) g, shoot biomass (5.57) g, relative water content of leaf (0.69) and leaf membrane stability index (0.07). The study concluded that significant effect of silica gel application is crucial and important to improve vegetative attributes of false flax.

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Effect of cold stress on boro rice seedlings

Journal of Applied and Natural Science ◽

10.31018/jans.v9i2.1318 ◽

2017 ◽

Vol 9 (2) ◽

pp. 1036-1041 ◽

Cited By ~ 1

Author(s):

Priyanka Kumari ◽

H. K. Jaiswal

Keyword(s):

Cold Stress ◽

Water Content ◽

Chlorophyll Content ◽

Relative Water Content ◽

Stability Index ◽

Membrane Stability ◽

Membrane Stability Index ◽

Relative Water ◽

Cold Tolerant ◽

Boro Rice

Cold stress at seedling stage is a major constraint in boro rice production. Nine boro rice lines were crossed in diallel fashion excluding reciprocals to obtain 36 crosses. All the 36 crosses along with parents were grown in nursery in three seasons (boro-2014, kharif-2015 and boro-2015). Performance of seedlings for survival per cent, chlorophyll content, relative water content, membrane stability index was recorded just before transplanting in all the three seasons. Scoring for cold tolerance was done in both boro seasons. Gautam showed highest survival rate over three seasons. Among crosses, IR 64 x Krishna Hamsa showed highest survival (84%) in boro-2014, MTU 1010 x Jaya (86.33%) in boro-2015 and MTU 1010 x Krishna Hamsa (95.67%) in kharif-2015. Jaya x Krishna Hamsa was most cold tolerant cross over both boro seasons. Significant positive correlation was observed among survival per cent, chlorophyll content, relative water content and membrane stability index over seasons.

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Cold Pretreatment-Induced Changes in Antioxidant Enzyme Activities and Relative Water Content and Soluble Sugars in Shoots and Roots of Soybean Seedlings

Journal of Biological Sciences ◽

10.3923/jbs.2007.1525.1530 ◽

2007 ◽

Vol 7 (8) ◽

pp. 1525-1530 ◽

Cited By ~ 1

Author(s):

Leila Zeinali Yadegari ◽

Reza Heidari . ◽

Jirair Carapetian .

Keyword(s):

Water Content ◽

Antioxidant Enzyme ◽

Enzyme Activities ◽

Relative Water Content ◽

Soluble Sugars ◽

Antioxidant Enzyme Activities ◽

Cold Pretreatment ◽

Soybean Seedlings ◽

Relative Water ◽

Induced Changes

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Evaluation of Water Stress and Nitrogen Fertilizer Effects on Relative Water Content, Membrane Stability Index, Chlorophyll and Some Other Traits of Lentils (Lens culinaris L.) Under Hydroponics Conditions

Research Journal of Environmental Sciences ◽

10.3923/rjes.2009.103.109 ◽

2009 ◽

Vol 3 (1) ◽

pp. 103-109 ◽

Cited By ~ 4

Author(s):

Sh. Jamaati-e-Somarin ◽

M. Salehpour ◽

A. Ebadi ◽

M. Izadi

Keyword(s):

Water Stress ◽

Water Content ◽

Nitrogen Fertilizer ◽

Relative Water Content ◽

Lens Culinaris ◽

Stability Index ◽

Membrane Stability ◽

Membrane Stability Index ◽

Relative Water

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Antioxidant activity of enzymatic system of two different wheat (Triticum aestivum L.) cultivars growing under salt stress

Plant Soil and Environment ◽

10.17221/95/2010-pse ◽

2011 ◽

Vol 57 (No. 3) ◽

pp. 101-107 ◽

Cited By ~ 8

Author(s):

W.M. Bhutta

Keyword(s):

Antioxidant Enzymes ◽

Salt Stress ◽

Water Content ◽

Relative Water Content ◽

Stability Index ◽

Membrane Stability ◽

Membrane Stability Index ◽

Salt Tolerant ◽

Stress Levels ◽

Relative Water

Soil salinity and semi-arid and arid climate of Pakistan is a major constraint in agriculture and predominantly in foodstuff production. It limits crop yield and use of land previously uncultivated. Wheat is moderately salt tolerant. A great variation was observed between and within the cultivars (genotypes: S-24 salt tolerant and DN-27 salt sensitive) in relationship to the choice of salinity level (control and treatments: in increment of 25 mol/m3 NaCl/day to a final level of 80 and 160 mol/m3 NaCl into the nutrient solution) that will be used for screening purpose. Relative water content (RWC), membrane stability index and the activities of some antioxidant enzymes were determined after 20 and 40 days of salt stress exposure. As a result of activity enzymes, superoxide dismutase (SOD), peroxidase (POD) and catalase increased in S-24 with the increase of salt stress, while in DN-27 all the enzymes showed constant activity at all the stress levels. Meanwhile, relative water content and membrane stability index decrease the value as well as they increases the stress levels. It can be concluded that all three antioxidant enzymes were limiting factors for these genotypes and these reasons also led to the salt sensitivity in DN-27. Different selection methods should be applied to improve different traits in different conditions in wheat.

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Salinity Induced Changes in Relative Water Content, Chlorophyll Content and Total Soluble Sugars in Dalbergia sissoo and Acacia nilotica

International Journal of Pure & Applied Bioscience ◽

10.18782/2320-7051.7111 ◽

2018 ◽

Vol 6 (6) ◽

pp. 137-143

Author(s):

Keyword(s):

Water Content ◽

Chlorophyll Content ◽

Relative Water Content ◽

Soluble Sugars ◽

Acacia Nilotica ◽

Dalbergia Sissoo ◽

Total Soluble Sugars ◽

Relative Water ◽

Induced Changes

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Proline, Protein, Rwc and Msi Contents Affected by Paclobutrazol and Water Deficit Treatments in Strawberry Cv. Paros

Cercetari Agronomice in Moldova ◽

10.1515/cerce-2015-0022 ◽

2015 ◽

Vol 48 (1) ◽

pp. 107-114 ◽

Cited By ~ 4

Author(s):

S. Parvin ◽

T. Javadi ◽

N. Ghaderi

Keyword(s):

Drought Stress ◽

Cell Membrane ◽

Water Content ◽

Relative Water Content ◽

Stability Index ◽

Membrane Stability ◽

Membrane Stability Index ◽

Cell Membrane Stability ◽

Relative Water ◽

Leaf Relative Water Content

Abstract Drought is one of the critical environmental stresses that affect growth and development of plants. Plants are damaged directly and indirectly under drought stress. Increasing water stress tolerance in plants is crucial. The aim of this study was to investigate the effects of different water stress levels (-1, -5, and -10 bars) and paclobutrazol application (0 and 50 mg-1) on strawberry cv. Paros. According to analyses of variance there were significant effects of drought stress and paclobutrazol application on leaf area, leaf dry weight, leaf relative water content (RWC), cell membrane stability index (MSI), proline and protein content of leaves. Leaf area, leaf dry weight, leaf relative water content and cell membrane stability index decreased in drought stress, especially at -10 bars. Proline and protein contents were enhanced by increasing water stress levels. Paclobutrazol application increased leaf relative water content and cell membrane stability index, proline and protein contents of leaves. Leaf relative water content was 68.77% in -10 bars drought stress that increased to 79% in paclobutrazol treatment. Also, cell membrane stability index was 69.65% in severe drought stress and reached to 77% in paclobutrazol treatment. According to the results pacloburazol is a benefit substance to ameliorate drought stress effects in strawberry cv. Paros.

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The Method of Plant Water Status Measurement in Sweet Potato (Ipomoea Batatas (L) Lam.)

Beccariana Botanical Research Bulletin ◽

10.30862/bbrp.v7i1.274 ◽

2010 ◽

Vol 7 (1) ◽

Author(s):

Saraswati Prabawardani

Keyword(s):

Water Content ◽

Sweet Potato ◽

Relative Water Content ◽

Water Status ◽

Plant Water Status ◽

Equilibration Time ◽

Plant Water ◽

Font Size ◽

Potato Leaf ◽

Relative Water

The measurement of plant water status such as leaf water potential (LWP) and leaf relative water content (RWC) is important part of understanding plant physiology and biomass production. Preliminary study was made to determine the optimum amount of leaf abrasion and equilibration time of sweet potato leaf inside the thermocouple psychrometer chambers. Based on the trial, the standard equilibration time curve of a Peltier thermocouple for sweet potato leaf was between 2 and 3 hours. To increase the water vapour conductance across the leaf epidermis the waxy leaf cuticle should be removed or broken by abrasion. The result showed that 4 times leaf rubbings was accepted as the most effective way to increase leaf vapour conductance of sweet potato in the psychrometer chambers. In calculating the leaf relative water content, unstressed water of sweet potato leaves require 4 hours imbibition, whereas water stressed of sweet potato leaves require 5 to 6 hours to reach the saturation time. Either leaf water potential or relative water content can be used as a parameter for plant water status in sweet potato.

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