Response of sunflower (Helianthus annuus L) genotypes to PEG-mediated water stress

AbstractDrought tolerance of two sunflower (Helianthus annuus L.) genotypes, cultivated cultivar 1114 and interspecific line H. annuus × H. mollis, was studied under laboratory conditions using PEG-6000. Four levels of osmotic stress (−0.4, −0.6, −0.8 and −1.0 MPa) were created and performances were monitored against a control. Physiological and biochemical stress determining parameters such as malondialdechyde (MDA), proline content, and hydrogen peroxide (H2O2) were compared between seedlings of both genotypes. The results indicated that both genotypes have similar responses at four osmotic potentials for all traits studied. All seedling growth parameters such as germination percentage, root length, shoot length, root and shoot dry weight decreased with increasing osmotic stress. MDA, proline, and H2O2 were found to be increased at different osmotic gradients in comparison to control. Cultivar 1114 was less affected than the interspecific line under these stress conditions. The data observed in the experiments revealed that perennial wild H. mollis can hardly be considered to be an excellent candidate of drought tolerance genes.

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The Effect of leaves Feeding with Heomic Acid in Some Growth and Producing Properties of Sun Flower Plant. Helianthus annuus L: تأثير التغذية الورقية بحامض الهيوميك في بعض صفات النمو والحاصل لنبات زهرة الشمس .Helianthus annuus L

Journal of agricultural, environmental and veterinary sciences - مجلة العلوم الزراعية والبيئية والبيطرية ◽

10.26389/ajsrp.m081117 ◽

2017 ◽

Vol 1 (4) ◽

Author(s):

Ali Moutcher Murzah Al-Shamri - Najm Abdullah Juma Al - Zuba

Keyword(s):

Humic Acid ◽

Helianthus Annuus ◽

Block Design ◽

Total Yield ◽

Dry Weight ◽

Growth And Yield ◽

Helianthus Annuus L ◽

Flower Plant ◽

Loam Soil ◽

Four Levels

A factorial experiment was applied according to Randomized Complete Block Design (R.C.B.D) with three replications, during the spring season 2017 in Diyala / Baquba / Buhriz city, using silt loam soil to study the effect of four levels of foliar fertilization with humic acid 0, 2, 4, 6 ml.L-1 in the growth and yield of sunflower, Helianthus annuus L. (LuLeo). The results showed significant differences for level of humic acid 6 ml.L-1 in plant height which gave an average 213.73 cm, leaf area of the plant 5597.32 cm2, chlorophyll index 48.64 SPAD, dry weight of the plant 215.0 g, number of seeds in the flowery disc 1494 seed.disc-1, 1000 seeds weight 88.3 g, plant yield 127.91 g.plant-1, total yield 6.81 ton.h-1 and oil percentage in the seeds 43.184%, while the level 4 ml.L-1 humic acid gave the highest average for the protein percentage in the seeds 18.34%.

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In vitro screening of white Jute (Corchorus capsularis L) against salinity stress

Journal of Applied and Natural Science ◽

10.31018/jans.v7i1.613 ◽

2015 ◽

Vol 7 (1) ◽

pp. 344-347 ◽

Cited By ~ 1

Author(s):

M. Ramesh Naik ◽

Mukesh Kumar ◽

D. Barman ◽

P.N. Meena ◽

A. Anil Kumar ◽

...

Keyword(s):

Salinity Stress ◽

Salt Concentration ◽

Growth Parameters ◽

Block Design ◽

Dry Weight ◽

Germination Percentage ◽

Corchorus Capsularis ◽

Nacl Concentration ◽

Four Levels

The environmental stress such as salinity of soil or water is serious threat for field crops in the world, especially in arid and semiarid regions. To study salinity stress on jute (Corchorus capsularis), an experiment was laid out in factorial randomized block design keeping nine capsularis varieties (JRC-698, JRC-321, JRC-517, JRC-7447, JBC-5, JRC-212, JRC-80, JRC-532 and UPC-94) as one factor and four levels of salt concentrations i.e. control (Distilled H2O), 100, 160, 240 and 300 mM NaCl with three replications. Adverse effect of salinity increased with increasing concentration of sodium chloride. Among nine jute varieties the highest germination percentage (89.5%), root length (0.6 cm), shoot length (1.2 cm), fresh weight (93 mg) and dry weight (9.5 mg) of seedling were observed in ‘JRC-698’ at salt concentration at 160 mM NaCl as compared with other salt concentration. All growth parameters were recorded higher in control than other treatments. All growth parameters were decreased up to 240 mM NaCl concentration and it was completely inhibited at 300 mM NaCl. Variety ‘UPC-94’ was the most susceptible to salinity stress. Hence, white jute varieties, JRC-698 and JRC-517 can be grown at 160 mM NaCl concentration.

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EFFECT OF MINERAL DEFICIENCY ON MORPHOLOGICAL AND PHYSIOLOGICAL PARAMETERS AND ON SHOOT AND ROOT MINERAL PARTITIONING IN THREE SUNFLOWER VARIETIES / EFECTO DE LA FALTA DE ELEMENTOS MINERALAS SOBRE LOS PARAMENTROS MORFOLOGICOS Y FISIOLOGICOS Y REPARTICION DE ELEMENTOS MINERALES DE LA PARTE SOBRE EL SUELO Y DE LA RAIZ EN TRES VARIEDADES / INFLUENCE DE LA CARENCE D’ÉLÉMENTS MINÉRAUX SUR LES PARAMÈTRES MORPHOLOGIQUES ET PHYSIOLOGIQUES ET SUR LA DISTRIBUTION DES ÉLÉMENTS MINÉRAUX ENTRE LA PARTIE AÉRIENNE ET LA RACINE POUR TROIS SORTES DE TOURNESOL

Helia ◽

10.1515/helia.2001.24.35.135 ◽

2001 ◽

Vol 24 (35) ◽

pp. 135-148

Author(s):

Mohammed El Midaoui ◽

Ahmed Talouizte ◽

Benbella Mohamed ◽

Serieys Hervé ◽

Ait Houssa Abdelhadi ◽

...

Keyword(s):

Leaf Area ◽

Dry Matter ◽

Growth Parameters ◽

Dry Weight ◽

Mineral Deficiency ◽

P Deficiency ◽

Plant Parts ◽

Shoot Dry Weight ◽

K Deficiency ◽

Matter Effect

SUMMARYAn experiment has been carried out in order to study the behaviour under mineral deficiency of three sunflower genotypes, a population variety (Oro 9) and two hybrids (Mirasol and Albena). Sunflower seedlings were submitted to five treatments: N deficiency (N0), P deficiency (P0), K deficiency (K0), N and K deficiency (N0K0) and a control. Plants were harvested when they reached 3-4 true pairs of leaves. Growth parameters measured (height, total leaf area, root length, root and shoot dry mater) were all significantly reduced by mineral deficiency. Leaf area was most reduced by N0 (-61%) and P0 (-56%). Total dry matter was most affected by N0 (-63%) and by N0K0 (-66%). Genotype comparisons showed that Oro 9 had the highest shoot dry matter while Albena had the lowest root dry matter. Effect of mineral deficiency on content and partitioning of N, P, K, Ca and Na was significant and varied according to treatments and among plant parts. Shoot dry weight was significantly correlated with root N content (r2=0.81) and root K content (r2=-0.61) for N0 and K0.

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Applications of plant growth promoting bacteria and Trichoderma spp. for controlling Orobanche crenata in faba bean

Bulletin of the National Research Centre ◽

10.1186/s42269-019-0263-y ◽

2020 ◽

Vol 44 (1) ◽

Cited By ~ 1

Author(s):

Mahmoud Ahmed Touny El-Dabaa ◽

Hassan Abd-El-Khair

Keyword(s):

Plant Growth ◽

Faba Bean ◽

Growth Parameters ◽

Dry Weight ◽

Research Centre ◽

Plant Growth Promoting Bacteria ◽

Fresh Weight ◽

Orobanche Crenata ◽

Trichoderma Spp ◽

Shoot Dry Weight

Abstract Background Orobanche crenata is an obligate root parasite belonging to Orbanchaceae. Broomrape causes great damage to the faba bean. Several attempts were applied for controlling parasitic weeds. So, the aim of this work is to study the application of Trichoderma spp. as well as three rhizobacteria species in comparison to herbicidal effect of Glyphosate (Glialka 48% WSC) for controlling broomrape infesting faba bean (Vicia faba). Materials and methods Three pot experiments were carried out in the greenhouse of the National Research Centre, Dokki, Giza, Egypt during two successive winter seasons. Trichoderma inocula were adjusted to 3.6 × 108 propagules/ml and the bacterium inocula were adjusted at 107–109 colony-forming unit (CFU)/ml. All treatments were applied, before 1 week of sowing, at rate of 50 ml per pot in experiments I and II, while 100 ml per pot in experiment III. Results Trichoderma spp. (T. harzianum, T. viride and T. vierns) as well as three rhizobacteria species (Pseudomonas fluorescens, Bacillus subtilis and Bacillus pumilus) enhanced the growth parameters in faba bean plants, i.e. shoot length, shoot fresh weight, shoot dry weight and leaf number in the first experiment when applied without O. crenata infection. In the second experiment, all bio-control could protect plants against O. crenata infection, where it had better juvenile number reduction, than glyphosate after 2 months of application. Both B. subtilis and B. pumilus had the highest reduction to juvenile fresh weight, while their effect was equal to herbicide for juvenile dry weight, respectively. The bio-control agents had high effects until the 4th month, but it was less than that of the herbicide. In experiment III, the bio-control agents could highly reduce the juvenile parameters after 2 months, as well as juvenile fresh weight and juvenile dry weight after 4 months, than the herbicide, respectively. The bio-control agents were effective until 6 months, but less than the herbicide effect. All bio-control treatments highly increased the plant growth parameters, than the herbicide. Conclusion The application of Trichoderma spp. as well as rhizobacteria species could play an important role in controlling broomrape in faba bean as a natural bioherbicide.

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Selection of drought tolerant wheat genotypes by osmotic stress imposed at germination and early seedling stage

SAARC Journal of Agriculture ◽

10.3329/sja.v15i2.35147 ◽

2018 ◽

Vol 15 (2) ◽

pp. 177-192

Author(s):

RR Saha ◽

A Hannan ◽

A Nessa ◽

MA Malek ◽

MR Islam

Keyword(s):

Osmotic Stress ◽

Dry Weight ◽

Seedling Stage ◽

Metabolic Efficiency ◽

Wheat Genotypes ◽

Shoot Dry Weight ◽

Vigour Index ◽

Peg Treatment ◽

Early Seedling ◽

Different Levels

An experiment on hundred wheat genotypes under different levels of osmotic stress was carried out during 2014 to select the genotype(s) tolerant to drought at germination and early seedling stage. Different levels of osmotic stress were imposed by using polyethylene glycol (PEG). Three osmotic stress levels viz. control (distilled water), 15% PEG solution and 25% PEG solution were used. Among the 100 genotypes the rate of germination percentage, final germination (%), root and shoot dry weight, amount of respiration and vigour index under PEG treatment was found significantly lower than that of control condition. Compared to control condition relative decrease in rate of germination, final germination, amount of respiration and vigour index among the wheat genotypes were found more at 25% PEG than that of 15% PEG treatment. However, the seed metabolic efficiency was significantly higher in wheat genotypes under both 15% PEG and 25% PEG treatment compared to the control condition. A significant positive correlation exists between the important growth parameters like rate of germination (%), final germination (%), shoot dry weight, root dry weight and vigour index. On the basis of these physiological traits against osmotic stress, nine genotypes of wheat such as BD-480, BD-498, BD- 501, BD-513, BD-514, BD-519, BD-592, BD-618 and BD- 633 were selected as drought tolerant.SAARC J. Agri., 15(2): 177-192 (2017)

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ALLELOPATHIC POTENTIAL OF WEED SPEICES AGERATUM CONYZOIDES L. AND CLEOME VISCOSA L. ON GERMINATION AND GROWTH OF SESAMUM INDICUM L

Kongunadu Research Journal ◽

10.26524/krj106 ◽

2015 ◽

Vol 2 (2) ◽

pp. 114-117

Author(s):

Anbarasan R ◽

Prabhakaran J

Keyword(s):

Growth Parameters ◽

Dry Weight ◽

Inhibitory Effect ◽

Germination Percentage ◽

Sesamum Indicum ◽

Weed Species ◽

Ageratum Conyzoides ◽

Allelopathic Potential ◽

Germination And Growth ◽

Cleome Viscosa

Various concentrations (5%, 10%, 15% and 20%) of aqueous extracts prepared from two weed species namely Ageratum conyzoides L. and Cleome viscosa L. and used for the present experiments to determine their allelopathic potential on growth and developmental changes on sesame (Sesamum indicum L.). The weed extracts showed an inhibitory effect on germination percentage, root and shoot growth, and fresh and dry weight of sesame seedlings. The extracts of A.conyzoides had more inhibitory effect at 20%concentration,than that of C.viscosa on growth parameters of sesame.

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Mitigation of salt stress in rice plant at germination stage by using methyl jasmonate

Asian Journal of Medical and Biological Research ◽

10.3329/ajmbr.v2i1.27572 ◽

2016 ◽

Vol 2 (1) ◽

pp. 74-81 ◽

Cited By ~ 2

Author(s):

Sakil Mahmud ◽

Shayla Sharmin ◽

Bishan Lal Das Chowdhury ◽

Mohammad Anowar Hossain ◽

Muhammad Javidul Haque Bhuiyan

Keyword(s):

Salt Stress ◽

Methyl Jasmonate ◽

Root Length ◽

Growth Parameters ◽

Dry Weight ◽

Germination Percentage ◽

Alpha Amylase ◽

Rice Varieties ◽

Biochemical Component ◽

Germination Stage

To explore the possibility of using methyl jasmonate (MeJA) for alleviation of salt stress, the present study was conducted where six rice varieties (BRRI dhan31, BRRI dhan46, Gota, Kajalsail, Pokkali and Pengek) were grown in non saline (0 dSm-1), saline (12 dSm-1), saline (12 dSm-1) + 10 ?M MeJA and saline (12 dSm-1) + 20 ?M MeJA conditions at germination stage (till the 9 days). MeJA was applied by imbibing seeds in it for 24 hours. To evaluate the effect of MeJA on saline stressed plant at germination stage, change in growth parameters namely germination percentage, shoot and root length, fresh and dry wt. of shoot, fresh and dry wt. of root and biochemical component- activity of alpha-amylase were monitored. Salinity had a minimum effect on final germination percentage (FGP) of rice varieties, but delayed in attaining it. MeJA had least positive effect. Salinity significantly reduced the shoot and root length, fresh and dry weight of all the varieties. MeJA had more decreasing effect in susceptible varieties while increasing effect in moderately tolerant and tolerant. Activity of alpha-amylase in germinated seed varied from 0.051 mg to 0.111 mg mal./mg tissue. At 12dSm-1 salinity, susceptible and moderately tolerant varieties showed significant reduction but tolerant showed significant increase. MeJA intensified the negative effect further in susceptible varieties. In tolerant and moderately tolerant varieties, increment in activity took place and 10 ?M had a better effect over 20 ?M MeJA.Asian J. Med. Biol. Res. March 2016, 2(1): 74-81

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Effect of salt stress on some sweet corn (Zea mays L. var. saccharata) genotypes

Archives of Biological Sciences ◽

10.2298/abs150121062s ◽

2015 ◽

Vol 67 (3) ◽

pp. 993-1000 ◽

Cited By ~ 3

Author(s):

Lydia Shtereva ◽

Roumiana Vassilevska-Ivanova ◽

Tanya Karceva

Keyword(s):

Zea Mays ◽

Salt Stress ◽

Zea Mays L ◽

Sweet Corn ◽

Growth Parameters ◽

Dry Weight ◽

Germination Percentage ◽

F1 Hybrid ◽

Salt Stress Condition ◽

Salinity Levels

An experiment was carried out hydroponically under laboratory conditions to investigate the effect of salt stress on several physiological and biochemical parameters of three sweet corn (Zea mays L. var. saccharata) genotypes: lines 6-13, C-6 (pollen source) and their heterotic F1 hybrid ?Zaharina?. The degree of salinity tolerance among these genotypes was evaluated at three different sodium chloride (NaCl) concentrations: 0 mM, 100 mM, 125 mM and 150 mM. Seed germination, plant growth and biochemical stress determining parameters such as malondialdehyde (MDA), proline content and hydrogen peroxide (H2O2) levels were compared between seedlings of lines and hybrid. The obtained results indicated that both lines and hybrid have similar responses at different salinity levels for all examined traits. All the seedlings? growth parameters, such as germination percentage, root length, shoot length, root and shoot fresh and dry weight, decreased with increasing salinity level. MDA, proline and H2O2 increased at different saline conditions in comparison to the control. Based on the results, of the three genotypes examined, the hybrid Zaharina, followed by line C-6, was more salt-sensitive than line 6-13 in salt stress condition.

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Growth Enhancement of Phragmites australis, Eichhornia crassipes and Saccharum officinarum for Rhizoremediation of Crude Oil

International Journal of Environment ◽

10.3126/ije.v7i1.21317 ◽

2018 ◽

Vol 7 (1) ◽

pp. 60-84

Author(s):

Monday Ubogu ◽

Lucky O. Odokuma ◽

Ejiro Akponah

Keyword(s):

Crude Oil ◽

Leaf Area ◽

Root Length ◽

Growth Parameters ◽

Control Plant ◽

Dry Weight ◽

Saccharum Officinarum ◽

Germination Percentage ◽

Growth Enhancement ◽

Plant Soil

P. australis, E. crassipes (in mangrove swamp) and S. officinarum (in rainforest) are capable of tolerating some levels of crude oil in soil. However, some important growth characteristics such speedy growths, extensive root system and increased biomass desirable for efficient rhizoremediation are depressed. To cushion this suppressive effects, plants were subjected to the following treatments: Plant + Soil (PS) (Control); Plant + Soil + Oil (PSO); Plant + Soil + Oil + Fertilizer (PSOF); Plant +Soil + Oil + Fertilizer + Microorganisms (PSOFM); and Plant + Soil + Fertilizer + Microorganisms + Solarization (PSOFMS). Treatments were monitored for 120 days to determine their effects on the following growth parameters: Germination, germination percentage, height, and root length, dry weight, and leaf area. Results indicated that treatments PSOF, PSOFM and PSOFMS enhanced all growth parameters over contaminated untreated soil (PSO) with the exception of germination in P. australis and S. officinarum; while root length, leaf area in E. crassipes were statistically the same for PS, PSO, PSOFM and PSOFMS (P ˂ 0.05). Overall, growth enhancement efficiencies of the applied treatments were in the order: PSOFM ˃ PSOF ˃ PSOFMS. Thus, growth of these plants can be enhanced in crude oil contaminated soil by the above treatments for efficient rhizoremediation.

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