The effect of salinity and temperature on seed germination and growth of Hordeum jubatum

1974 ◽  
Vol 52 (6) ◽  
pp. 1357-1362 ◽  
Author(s):  
Irwin A. Ungar
Keyword(s):  
Seed Germination ◽  
Salinity Stress ◽  
Seedling Growth ◽  
Salt Concentration ◽  
Salt Solution ◽  
Osmotic Potential ◽  
Active Growth ◽  
Hordeum Jubatum ◽  
Germination And Growth ◽  
Germination Stage

Studies on the germination of Hordeum jubatum seeds indicate that they were highly tolerant of salinities up to 1.0%, with little reduction in germination. Each increase in salt concentration did, however, delay the time of germination. Seedling growth proved to be more sensitive than germination to salinity stress, with newly germinated plants showing a decrease in size with each salinity increment. Results of growth studies were similar to those in germination tests; plants decreased in size with decreased osmotic potential of the salt solution. The germination stage and later periods of active growth were nearly equal in their ability to withstand salinity stress.

scholarly journals Effects of salinity stress on seed germination and seedling growth of tomato

2019 ◽  
Vol 17 (4) ◽  
pp. 490-499
Author(s):  
Purba Chakma ◽  
Md Mokter Hossain ◽  
Md Golam Rabbani
Keyword(s):  
Seed Germination ◽  
Salinity Stress ◽  
Seedling Growth ◽  
Salt Concentration ◽  
Salt Solution ◽  
Untreated Control ◽  
Crop Production ◽  
Vigor Index ◽  
Percent Germination ◽  
Four Levels

Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore, a study was carried out in order to investigate the effect of different levels of NaCl salinity stress on seed germination and seedling growth of tomato. This study was consisted with five varieties of tomato (BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-14, and BARI Tomato-15) and four levels of NaCl salt solution (0, 50, 100 and 150 mM). Seeds were placed in petridish for germination and the seedlings were allowed to grow for ten days. Results showed that percent seed germination decreased with increasing salt concentration in the germinating media. The highest seed germination (68.25%) was recorded in untreated control (0 mM) condition and the lowest in 150 mM salt solution ((5.92%). In combination of variety and salt concentration, BARI Tomato-2 gave the highest germination (88.33%) under 0 mM salinity condition and the lowest (2.92%) in BARI Tomato-3 with 150 mM salt solution. However, percent germination, germination coefficient, radicle and plumule length, seedling vigor index, fresh weight of plumule and radicle, mean germination time, germination index decreased with increasing salt concentration as compared to untreated control condition. The findings indicated that BARI Tomato- 2, BARI Tomato-4 and BARI Tomato-15 were relatively tolerant to salt stress than BARI Tomato-3 and BARI Tomato-14. J Bangladesh Agril Univ 17(4): 490–499, 2019

Allelopathic Effects of Lantana (Lantana camara) on Milkweedvine (Morrenia odorata)

Weed Science ◽  
1984 ◽  
Vol 32 (6) ◽  
pp. 757-761 ◽  
Author(s):  
Nagi Reddy Achhireddy ◽  
Megh Singh
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Germination Percentage ◽  
Lantana Camara ◽  
Test Period ◽  
Percentage Germination ◽  
Allelopathic Activity ◽  
Foliar Symptoms ◽  
Allelopathic Effects ◽  
Germination And Growth

Allelopathic effects of lantana (Lantana camaraL. ♯3LANCA) residues (root, shoot), foliar leachates, and the soil (where lantana was grown) on milkweedvine (Morrenia odorataLindl. ♯3MONOD) seed germination and growth over a 30-day period were examined. Foliar leachates or the soil collected from the field where lantana had been growing had no effect on the final germination percentage or the seedling growth of milkweedvine. Incorporation of dried lantana shoot or root material into soil had no effect on the final percentage germination but caused significant reductions in milkweedvine growth over a 30-day test period. Roots were more inhibitory than shoots. Fifty percent of milkweedvine seedlings died within 15 days after germination at 1% (w/w) dried lantana root incorporation into the soil, and higher concentrations increased seedling death. Lantana roots incorporated into the soil produced foliar symptoms such as wilting and desiccation, whereas lantana shoots incorporated into the soil produced yellowing of the foliage of milkweedvine. Allelopathic activity of lantana residues was still strong even after decomposition of lantana residues for 4 weeks prior to the planting of milkweedvine seeds.

scholarly journals Microbial inoculant influences the germination and growth of Albizia lebbeck seedlings in the nursery

2016 ◽  
Vol 26 (1) ◽  
pp. 82-89
Author(s):  
B. M. Khan ◽  
M. A. Kabir ◽  
M. K. Hossain ◽  
M. A. U. Mridha
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Volume Index ◽  
Cow Dung ◽  
Albizia Lebbeck ◽  
Positive Role ◽  
Total Pigment ◽  
Vigor Index ◽  
Collar Diameter ◽  
Germination And Growth

Microbial inoculants (MI), a biofertilizer, composed of many different beneficial microorganisms has positive role on seed germination and growth of plants. In the present study, its efficacy on seed germination and seedling growth of Albizia lebbeck in the nursery was studied. The seeds were sown in polybags filled with a mixture of forest soil and cow dung (3:1) and treated with 0.1%, 0.5%, 1%, 2%, 5% and 10% concentrations of MI. Most of the parameters studied (seed germination, shoot and root lengths, dry weights of shoot and root, collar diameter, leaf number etc) were found maximum in 2% of MI . Although the highest vigor index, volume index and quality index (7053, 3738 and 1.106, respectively) were found in 2% MI, but the highest sturdiness (65.95) was found in 1% MI solution. The nodule number was higher at a very low (0.5%) concentration of MI but it normally decreased with the increase of concentration. Total pigment content in leaf was recorded highest (112.86 mg.L-1) in 2% of MI. Therefore, MI influences seed germination and seedling growth of A. lebbeck and the low concentration (2%) of the inoculant can be recommended for getting maximum seed germination and seedling growth of the species studied.Banko JanakariA Journal of Forestry Information for NepalVol. 26, No. 1, Page: 82-89, 2016

scholarly journals The Alleviation Effect of Silicon on Seed Germination and Seedling Growth of Tomato Under Salinity Stress

2012 ◽  
Vol 76 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Maryam Haghighi ◽  
Zahra Afifipour ◽  
Maryam Mozafarian
Keyword(s):  
Seed Germination ◽  
Salinity Stress ◽  
Seedling Growth ◽  
Germination Rate ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Tomato Seeds ◽  
Germination Characteristics ◽  
Salinity Levels ◽  
Mean Germination Time

The Alleviation Effect of Silicon on Seed Germination and Seedling Growth of Tomato Under Salinity StressThis study was conducted to evaluate the effectiveness of silicon (Si) application under salinity levels on seed germination and growth characteristics of tomato seeds. A laboratory experiment was performed on completely randomized design with two levels of salinity (25 and 50 mM NaCl) and 2 concentration of Si (1 and 2 mM) with 4 replications. Germination percentage, germination rate, seedling shoot and root length, fresh and dry weight of seedling and mean germination time was measured. Seed germination ofLycopersicon esculentumL. was significantly affected by salinity levels, Si and their interaction. Germination characteristics of tomato seeds decreased drastically by increasing NaCl concentrations. However, 1 mM Si had positive effects on seed germination characteristics and improved germination percentage, germination rate and mean germination time. Si alleviated the harmful effect of salinity stress on tomato seed germination at almost all germination characteristics.

Some effects of different forest litters on seed germination and growth

1981 ◽  
Vol 11 (3) ◽  
pp. 710-714 ◽  
Author(s):  
Clifford E. Ahlgren ◽  
Isabel F. Ahlgren
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Natural Habitat ◽  
Habitat Preferences ◽  
Successional Stages ◽  
Germination And Growth ◽  
Native Herbs

Germination and growth of 12 native herbs, shrubs, and trees were followed in five litter components characteristic of successional stages of the northeastern Minnesota forest. Various litter components stimulated or inhibited seed germination and seedling growth of some species. Germination and growth were not always similarly affected, suggesting that different factors may be involved. Inhibition and lack of inhibition of some species on certain litter components correlate with natural habitat preferences of these species and the nature of the litter in these habitats. This information can be of use in improving results of seeding for site reclamation and reforestation.

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