Wheatgrass Germination and Seedling Growth under Osmotic Stress

2018 ◽  
Vol 110 (2) ◽  
pp. 572-585 ◽  
Author(s):  
Mohamad-Hossein Sheikh-Mohamadi ◽  
Nematollah Etemadi ◽  
Ali Nikbakht ◽  
Mostafa Farajpour ◽  
Mostafa Arab ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Seedling Growth

The genetic basis of durum wheat germination and seedling growth under osmotic stress

2014 ◽  
Vol 58 (4) ◽  
pp. 681-688 ◽  
Author(s):  
M. Nagel ◽  
S. Navakode ◽  
V. Scheibal ◽  
M. Baum ◽  
M. Nachit ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Durum Wheat ◽  
Seedling Growth ◽  
Genetic Basis ◽  
Wheat Germination

Germination Ecology of Milkweedvine (Morrenia odorata)

Weed Science ◽  
1984 ◽  
Vol 32 (6) ◽  
pp. 781-785 ◽  
Author(s):  
Megh Singh ◽  
Nagi Reddy Achhireddy
Keyword(s):  
Seed Germination ◽  
Osmotic Stress ◽  
Root Growth ◽  
Seedling Growth ◽  
Shoot Growth ◽  
Seedling Emergence ◽  
Germination Percentage ◽  
Planting Depth ◽  
Germination Ecology ◽  
Optimum Ph

The germination of milkweedvine (Morrenia odorataLindl. ♯3MONOD) seed at 20 or 25 C was unaffected by a 12-h photoperiod. The 12-h photoperiod, however, decreased germination by 50% at 15 C. No germination occurred at 35 C regardless of photoperiod. By alternating 35 C for 12 h with 20 C for 12 h, the germination percentage was 57%. Seedling growth was maximum at alternating temperatures of 30/20 C. Optimum pH for germination and seedling growth was 7 and germination did not occur at pH levels below 6. Seed germination declined steadily at osmotic stress below −0.12 MPa; no germination occurred at −0.5 MPa. Seedling growth was not influenced by osmotic stress down to −0.18 MPa. Germination percentages of seeds kept under aerated water and nonaerated water were similar, but the seedling growth was greater in aerated water. Seedling emergence was maximum from depths of 0.5 to 2.5 cm, but no seedling emerged from 0 or 10 cm. Planting depth was negatively correlated (r = −0.7) with shoot growth but positively correlated (r = +0.98) to root growth.

Assessment of Seedling Growth of Deepwater Rice Genotypes under Osmotic Stress Condition

2016 ◽  
Vol 04 (04) ◽  
Author(s):  
Emam Ahmed MM ◽  
Haque MM ◽  
Arif Hasan Khan Robin ABM ◽  
Hossain MA ◽  
Biswash MR
Keyword(s):  
Osmotic Stress ◽  
Seedling Growth ◽  
Stress Condition ◽  
Deepwater Rice ◽  
Rice Genotypes

scholarly journals Vigour evaluation of cocksfoot (Dactylis glomerata) seeds of different age

2013 ◽  
Vol 42 (1-2) ◽  
pp. 23-33
Author(s):  
Ryszard J. Górecki ◽  
Dorota Mierzejewska ◽  
Jan Kaszuba ◽  
Stanisław Grzesiuk ◽  
Andrzej Rejowski
Keyword(s):  
Growth Rate ◽  
Osmotic Stress ◽  
Seedling Growth ◽  
Dactylis Glomerata ◽  
Natural Ageing ◽  
Stress Tests ◽  
Seed Vigour ◽  
Seedling Growth Rate ◽  
Field Emergence

Cocksfoot seeds cv. Baza and Bepro, harvested in 1986, 1985, 1984, and 1983 and stored in a store-house were studied. Seed lots did not differ greatly in their viability. However, significant reduction in seed vigour due to natural ageing as measured by soil emergence, seedling growth rate, and ethanol and osmotic stress tests was noted. A conductivity test did not indicate vigour changes of ageing seeds, and its correlation with field emergence was poor. The methodical aspects of vigour evaluation of cocksfoot seeds are discussed.

scholarly journals The vigour of timothy (Phleum pratense L.) seeds stored up to 5 years

2014 ◽  
Vol 58 (2) ◽  
pp. 263-272 ◽  
Author(s):  
Ryszard J. Górecki ◽  
Dorota Mierzejewska
Keyword(s):  
Growth Rate ◽  
Osmotic Stress ◽  
Seedling Growth ◽  
Stress Test ◽  
Seed Viability ◽  
Phleum Pratense ◽  
Accelerated Ageing ◽  
Ambient Conditions ◽  
Rate Analysis ◽  
Seedling Growth Rate

The viability and vigour of timothy seeds from the 1982, 1983, 1984, 1985 and 1986 harvests, stored in a store-house under ambient conditions were studied. During five years of storage, seed viability dropped from 90-95% to below 15%. The greatest fall in viability occurred between the 4th and 5th year of storage. Seed viability loss was accompanied by rapid vigour degradation as indicated by soil emergence, seedling growth rate analysis, osmotic stress, ethanol, and accelerated ageing (AA-test) tests. The conductivity test was not useful in timothy vigour examination. The highest correlation coefficients between vigour tests and field emergence were obtained for the seedling growth rate analysis and osmotic stress test.

Chemical Priming with Salt and Urea Improves Germination and Seedling Growth of Black Cumin (Nigella sativa L.) under Osmotic Stress

2019 ◽  
Vol 38 (3) ◽  
pp. 1170-1178 ◽  
Author(s):  
Mahdi Ghiyasi ◽  
Sina Siavash Moghaddam ◽  
Reza Amirnia ◽  
Christos A. Damalas
Keyword(s):  
Osmotic Stress ◽  
Seedling Growth ◽  
Nigella Sativa ◽  
Black Cumin ◽  
Chemical Priming

Germinative metabolism and seedling growth of cowpea (Vigna unguiculata) under salt and osmotic stress

2021 ◽  
Vol 139 ◽  
pp. 399-408
Author(s):  
Davi Santos Tavares ◽  
Tiago Ethiene Kanarski Fernandes ◽  
Yohanne Larissa Rita ◽  
Daiane Cristina Rocha ◽  
Bruno Francisco Sant'Anna-Santos ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Seedling Growth ◽  
Vigna Unguiculata ◽  
Salt And Osmotic Stress

scholarly journals Effects of drought stress on germination and seedling growth of different field pea varieties

2021 ◽  
pp. 59-70
Author(s):  
Gordana Petrovic ◽  
Tomislav Zivanovic ◽  
Radmila Stikic ◽  
Zorica Nikolic ◽  
Dusica Jovicic ◽  
...  
Keyword(s):  
Seed Germination ◽  
Osmotic Stress ◽  
Seedling Growth ◽  
Germination Percentage ◽  
Field Pea ◽  
Tolerance Index ◽  
Germination Time ◽  
Mean Germination Time ◽  
Effects Of Drought ◽  
Osmotic Potentials

Germination and seedling growth of seven genotypes of field pea (Pisum sativum L.) were studied in PEG-6000 solution having osmotic potentials -0.1 and -0.2 MPa. A study was undertaken to evaluate the influence of different osmotic potentials (MPa) on seed germination percentage (GP) and mean germination time (MGT). Results show that the percentage of germination decreased with a decrease in osmotic potential, while mean germination time increased. Variety Javor is much more sensitive than the other varieties at all levels of osmotic stress. By contrast, the lowest sensitivity of germination and MGT was found in varieties Mraz and Trezor. Seed germination tests at -0.1 to -0.2 MPa have the potential to be used as tests in field pea. Osmotic stress exposure and its duration significantly affected the growth of seedlings (shoot and root) and the accumulation of biomass, while its effect was more prominent on the growth of the shoot than on root growth, which was also confirmed by the root tolerance index.

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