scholarly journals Influence of Antioxidants and Salinity Stress on Seed Viability Characters of Some Wheat Cultivars

1970 ◽  
pp. 13-20
Author(s):  
A. A. Kandil, A. E. Sharief ◽  
Alkhamsa K. D. Botabaah
Keyword(s):  
Ascorbic Acid ◽  
Humic Acid ◽  
Bread Wheat ◽  
Salinity Stress ◽  
Seed Viability ◽  
Germination Index ◽  
Wheat Cultivars ◽  
Germination Time ◽  
Mean Germination Time ◽  
The Impact

To explore the impact of antioxidants types and levels prim on seed germination characters of some bread wheat cultivars under salinity stress. An experiment accompanied in seed science lab during November and December 2016, to study the response of antioxidants seed prim of some bread wheat cultivars to germinate under salinity levels. The highest of final percentages of germination (96.8 %), higher percentages of germination energy (58.11 %), highest values of germination index (0.970) and a smaller amount of germination time (2.29 day) obtained from sown Misr 1 variety. The results showed that maximum of percentages of germination (91.15 %) and germination index (0.951) obtained from soaking in humic acid. The maximum percentages of energy of germination (41.21 %) and the less mean germination time (2.77 day from soaking grains in ascorbic acid compared with without antioxidants. Increasing antioxidant concentrations to 200 ppm produced the highest percentages of germination (91.61 %), energy of germination (37.63 %), germination index (0.953) and the lowermost of mean germination time (2.97 day) compared with without antioxidants and level of 100 ppm. Increasing salinity to 160 mM during germination of wheat cultivars significantly reduced percentages of germination by 18.5 %, energy of germination by 96.7 %, germination index by 18.6 % and mean germination time by 53.5 % compared with without salinity (control). Whereas, for reducing the gap between production and consumption, it could be recommended that soaking bread wheat in humic acid or ascorbic acid at 200 mM under salinity stress enhanced seed viability and advise to sown under saline new reclaimed soil.

scholarly journals Effects of Priming with Ascorbic Acid, L-Cystein and Triacontanol on Germination of Rapeseed (Brassica napus L.)

2020 ◽  
Vol 3 (2) ◽  
pp. 48-55
Author(s):  
Katalin Molnár ◽  
Béla Biró-Janka ◽  
Imre-István Nyárádi ◽  
László Fodorpataki ◽  
Bernadett-Enikő Varga ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Brassica Napus ◽  
Seed Quality ◽  
Tap Water ◽  
Germination Rate ◽  
Germination Percentage ◽  
Germination Index ◽  
Control Treatment ◽  
Germination Time ◽  
Mean Germination Time

AbstractThe germination of seed batches of two rapeseed (Brassica napus L.) hybrids (‘Hybrirock’ and ‘Factor’) were investigated in response to priming in aqueous solutions of ascorbic acid (10 mM), L-cysteine (10 mM) and triacontanol (1 μM), respectively tap water (as control treatment). Investigations were focused on seed quality parameters, such as germination percentage, mean germination time, germination index, uniformity of germination, and seedling shoot and root growth. Germinated seeds were counted every 24 hours for a period of seven days, recording the final germination percentage (FGP), mean germination time (MGT), the coefficient of velocity of germination (CVG), germination rate index (GRI), germination index (GI), uncertanty (U), and synchrony (Z). In a separate trial fresh shoot- and root length, respectively the dry weight of the shoots and roots were also determined after a 14 day period. Germination tests were performed to examine the quality of seeds in response to different priming treatments. The results demonstrated that priming improved the germination parameters of seeds of both hybrids. Furthermore, the use of ascorbic acid, L-cysteine and triacontanol also enhanced seedling growth. The results may be used to rank seed lots by vigor, and decisions can be made regarding planting potential of each seed lot.

Influence of various treatments on pre and post germination properties of Callistephus chinensis (L.) Nees cv. Powderpuff

2019 ◽  
Vol 48 (3) ◽  
pp. 449-455
Author(s):  
Muneeb Ahmad Wani ◽  
FU Khan ◽  
Imityaz Tahir Nazki ◽  
Ambreena Din ◽  
Shameen Iqbal ◽  
...  
Keyword(s):  
Germination Rate ◽  
Germination Index ◽  
Germination Time ◽  
Mean Germination Time ◽  
China Aster ◽  
Growth Attributes ◽  
Germination And Growth ◽  
Different Levels

Seeds of China aster cv. Powderpuff were subjected to two conditioning techniques viz, hydroconditioning and halo-conditioning at different levels of concentrations and subjected time durations, constituting a total of 16 treatment combinations (P1 - P15) along with control (P0). Hydro-priming for 12 hrs and the halo-priming with 2 % KNO3 for 12 hrs significantly improved germination, mean germination time, germination index, germination rate index and growth attributes of China aster cv. Powderpuff. Hydropriming being simple economical and eco/subject friendly and safe is recommended for effective germination and growth of China aster cv. Powderpuff.

Environmental factors affecting the germination and emergence of white horehound (Marrubium vulgare L.): a weed of arid-zone areas

2018 ◽  
Vol 40 (1) ◽  
pp. 47 ◽  
Author(s):  
Muhammad M. Javaid ◽  
Singarayer K. Florentine ◽  
Hafiz H. Ali ◽  
Bhagirath S. Chauhan
Keyword(s):  
Osmotic Potential ◽  
Seedling Emergence ◽  
Alkaline Media ◽  
Germination Index ◽  
Arid Zones ◽  
Burial Depth ◽  
Germination Time ◽  
Wide Range ◽  
Marrubium Vulgare ◽  
Mean Germination Time

White horehound (Marrubium vulgare L.), is a troublesome weed of arid zones, particularly in cropping and grazing areas. Understanding the seed ecology of white horehound is relevant to its management. The present study investigated the effects of temperature, light, osmotic potential, salinity, pH, and seeding depth on seed germination and seedling emergence of white horehound. Seeds germinated over a wide range of temperatures, with highest germination (100%) occurring at 25/20°C in either 12-h alternating light/dark or complete darkness. Germination decreased from 92% to 10% as the osmotic potential decreased from 0 to minus 0.6 MPa and germination was completely inhibited at minus 0.8 MPa. Increasing concentration of sodium chloride (salinity) from 50 to 150 mM reduced germination from 68% to 11% but was completely inhibited at 200 mM. Germination was not limited by variation of pH in solutions of pH 5 to pH 10. Maximum germination (99%) occurred at pH 7, but slightly decreased (90%) in acidic or alkaline media. Surface located seeds were highly germinable (87%) where seedling emergence significantly declined as seeding depth increased from 0.5 to 3 cm. Nil seedling emergence was occurred at 4 cm burial depth. Light significantly affected germination, time to 50% germination, mean germination time and germination index. Increasing osmotic and salinity stress both significantly increased the time to start germination, time to 50% germination, mean germination time, but decreased germination index. Burial depth adversely affected seedling emergence with surface located seedlings emerging earlier (4.2 days) compared with 20 days for seeds buried at 3 cm. Results suggest that effective management of white horehound should consider targeting surface located seeds in combination with tools that induce minimal soil disturbance, particularly in relatively non-saline environments.

scholarly journals Effect of hydropriming method on maize (Zea mays) seedling emergence

2014 ◽  
Vol 39 (1) ◽  
pp. 143-150 ◽  
Author(s):  
KU Ahammad ◽  
MM Rahman ◽  
MR Ali
Keyword(s):  
Seedling Emergence ◽  
Research Work ◽  
Germination Percentage ◽  
Maize Seedling ◽  
Germination Index ◽  
Percentage Germination ◽  
Saturated Sand ◽  
Germination Time ◽  
Mean Germination Time ◽  
Surface Drying

The research work was carried out at the Seed Laboratory of Agronomy Department of Bangladesh Agricultural University, Mymensingh during the period from February to April in 2008 to find out the effect of hydropriming methods on maize seedling emergence. The hydropriming methods were- T1 (Non-priming), T2 (14 hours soaking + drying + storing), T3 (18 hours soaking + drying + storing), T4 (22 hours soaking + drying + storing), T5 (14 hours soaking + surface drying), T6 (18 hours soaking + surface drying), and T7 (22 hours soaking + surface drying). Effect of different hydropriming methods on seedling emergence performance of maize was evaluated at two moisture levels viz., 30% and 60% moisture of saturated sand in the experiment. Germination percentage, germination index and mean germination time were influenced significantly by hydropriming methods. The highest germination percentage, germination index, and lowest mean germination time were recorded with T6 (18 hours soaking + surface drying). DOI: http://dx.doi.org/10.3329/bjar.v39i1.20164 Bangladesh J. Agril. Res. 39(1): 143-150, March 2014

scholarly journals Comparison of Leaf Sheath Transcriptome Profiles with Physiological Traits of Bread Wheat Cultivars under Salinity Stress

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0133322 ◽  
Author(s):  
Fuminori Takahashi ◽  
Joanne Tilbrook ◽  
Christine Trittermann ◽  
Bettina Berger ◽  
Stuart J. Roy ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Salinity Stress ◽  
Leaf Sheath ◽  
Physiological Traits ◽  
Wheat Cultivars

scholarly journals RESPONSE OF SOME BREAD WHEAT CULTIVARS TO SALINITY STRESS BY RE-USE OF SEA WATER UNDER NORTH SINAI CONDITIONS

2016 ◽  
Vol 5 (1) ◽  
pp. 39-52
Author(s):  
Mohamed Abd-Elghaffar ◽  
Mohamed Sourour ◽  
Eman ElSarag ◽  
Mohamed Atta
Keyword(s):  
Bread Wheat ◽  
Salinity Stress ◽  
Sea Water ◽  
Wheat Cultivars ◽  
North Sinai

scholarly journals Efeito da temperatura e do substrato na germinação de Hamatocactus setispinus (Cactaceae)

2015 ◽  
Vol 21 (2) ◽  
pp. 173
Author(s):  
Priscilla Brites Xavier ◽  
Janie Mendes Jasmim
Keyword(s):  
Genetic Diversity ◽  
Seed Germination ◽  
Ornamental Plants ◽  
Germination Index ◽  
Germination Time ◽  
Randomized Design ◽  
Different Temperatures ◽  
Mean Germination Time ◽  
Completely Randomized Design

Cacti are widely used as ornamental plants and seed germination is a major method for preserving genetic diversity. Thus, an experiment was carried out to evaluate the effects of different temperatures and substrates on seed germination of Hamatocactus setispinus. Seeds were sown in gerbox boxes containing either germination paper (S1), sand (S2) or vermiculite (S3). After placing the seeds on the substrates, the boxes were kept in germination chambers at 20, 25, 30 and 35° C for 30 days, under a photoperiod of 16 hours. The experiment was in a completely randomized design with four replicates. The speed germination index (SGI), mean germination time (MT) and germination rates (%) were evaluated. The best results were observed at 25º C. The highest SGI (3.94) was observed on seed germination paper, but MT values and germination rates on this substrate did not differ from those obtained on sand. Therefore, both substrates could be used for germination of this cactus species.

scholarly journals Influence of seed size and ecological factors on the germination and emergence of field bindweed (Convolvulus arvensis)

2013 ◽  
Vol 31 (1) ◽  
pp. 39-51 ◽  
Author(s):  
A Tanveer ◽  
M Tasneem ◽  
A Khaliq ◽  
M.M Javaid ◽  
M.N Chaudhry
Keyword(s):  
Seed Germination ◽  
Environmental Factors ◽  
Osmotic Stress ◽  
Germination Percentage ◽  
Germination Index ◽  
Convolvulus Arvensis ◽  
Germination Time ◽  
Wide Range ◽  
Field Bindweed ◽  
Mean Germination Time

An understanding of seed germination ecology of weeds can assist in predicting their potential distribution and developing effective management strategies. Influence of environmental factors and seed size on germination and seedling emergence of Convolvulus arvensis (field bindweed) was studied in laboratory and greenhouse conditions. Germination occurred over a wide range of constant temperatures, between 15 and 40 ºC, with optimum germination between 20 and 25 ºC. Time to start germination, time to 50% germination and mean germination time increased while germination percentage and germination index decreased with an increase in temperature from 20 ºC, salinity and osmotic stress. However, germination was tolerant to low salt (25 mM) or osmotic stress (0.2 MPa), but as salinity and osmotic stress increased, germination percentage and germination index decreased. Seeds of C. arvensis placed at soil surface showed maximum emergence and decreased as seeding depth increased. Seeds of C. arvensis germinated over a wide range of pH (4 to 9) but optimum germination occurred at pH 6 to 8. Under highly alkaline and acidic pH, time to start germination, time to 50% germination and mean germination time increased while germination percentage and germination index decreased. Increase in field capacity caused decreased time to start germination, time to 50% germination and mean germination time but increased germination percentage and germination index. Bigger seeds had low time to start germination, time to 50% germination and mean germination time but high germination percentage and germination index. Smaller seeds were more sensitive to environmental factors as compared to larger or medium seeds. It can be concluded that except for pH, all environmental factors and seed sizes adversely affect C. arvensis as regards seed germination or emergence and germination or emergence traits, and larger seeds result in improved stand establishment and faster germination than small seeds, regardless of moisture stress or deeper seeding depth.

scholarly journals Germination and Seedling Parameters of Wheat as Affected by Storage Conditions

2021 ◽  
Vol 904 (1) ◽  
pp. 012035
Author(s):  
S E Seadh ◽  
M A Badawi ◽  
M A Abdel-Moneamand ◽  
M M E Borham
Keyword(s):  
Dry Weight ◽  
Storage Conditions ◽  
Germination Percentage ◽  
Germination Index ◽  
Seedling Vigor ◽  
Germination Time ◽  
Stored Wheat ◽  
Vigor Index ◽  
Mean Germination Time ◽  
Wheat Seeds

Abstract A storage experiment was carried out from 27th April to 27thDecember, 2019 to study the effect of storage conditions i.e. methods (open air, under sunshade and in stores), packages type (normal, gunny, polyethylene and metal containers) and periods of seeds fumigation with phosphine (15, 30 and 45 days) on germination and seedling parameters of wheat. The experiment was arranged in a factorial experiment in randomized complete block design (R.C.B.D.) with four replications. Stored wheat seeds under sunshade produced the highest values of final germination percentage, germination index, mean germination time, plumule length, radical length, seedling vigor index and seedlings dry weight, followed by stored wheat seeds in stores. The highest germination index, mean germination time, plumule and radical lengths, seedling vigor index and seedlings dry weight were recorded in the samples of wheat seeds sealed stored in metal containers, followed by normal stored in gunny packages. The highest percentage of final germination was obtained by normal stored in gunny packages, followed by sealing storage in metal containers. The highest final germination percentage, germination index, mean germination time, plumule length, radical length, seedling vigor index and seedlings dry weight and the lowest abnormal seedlings percentage, rotten and sold seeds percentages, speed germination index, co-efficient of germination and germination energy percentage were recorded when treated with phosphine at the rate of 3 tablets/m3after 15 days from beginning the storage. This study recommended that stored wheat seeds under sunshade in metal packages and treating with phosphine at the rate of 3 tablets/m3 after 15 days from beginning the storage to enhance germination and seedlings parameter of wheat under the environmental conditions of Dakahlia Governorate, Egypt.

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