scholarly journals Effect of Some Treatments on Seed Dormancy, Germination And Antioxidant Enzymes of Kelussia Odoratissima Mozaff. Seeds

2015 ◽  
Vol 48 (2) ◽  
pp. 79-90 ◽  
Author(s):  
A. Hassan Shaykhi ◽  
B. Majd Nassiry ◽  
M. Ataei Kachouei
Keyword(s):  
Antioxidant Enzymes ◽  
Seed Dormancy ◽  
Ascorbate Peroxidase ◽  
Peroxidase Activity ◽  
Dry Weight ◽  
Germination Percentage ◽  
Laboratory Methods ◽  
Seedling Length ◽  
Germination Characteristics ◽  
Viable Seeds

Abstract Seed dormancy provides a mechanism for plants to delay germination until conditions are optimal for survival of the next generation. Dormancy release is regulated by a combination of environmental and endogenous signals with both synergistic and competing effects. In many cases, viable seeds are called dormant, when they are simply not germinating. Kelussia odoratissima Mozaff. (wild celery) is a medicinal plant (kind of umbelliferous) of Iran. Seeds of K. odoratissima often germinate poorly in the nursery, because of their seeds have a dormancy. Thus shortening the dormancy and increasing germination with laboratory methods can be effective in restoring the plant. The objective of this research was to evaluate the effect different methods of breaking of dormancy on germination of Kelussia odoratissima. Experiments used were stratification (0, 3, 6, 9 and 12 weeks), stratification and gibberellin and stratification and nitrate potassium. Results showed that stratification, stratification and gibberellin and stratification and nitrate potassium increased germination characteristics and catalase and ascorbate peroxidase activity. The highest germination percentage, seedling length, seedling dry weight and catalase and ascorbate peroxidase activity were attained from stratification and gibberellin 500 ppm and stratification and nitrate potassium 1%. In general, results showed that stratification and gibberellic acid (500 ppm) is the best treatment for breaking of Kelussia odoratissima Mozaff. seed dormancy and in seeds antioxidant enzymes could trigger germination

scholarly journals Improvement of Germination Characteristics and Enhancement of Antioxidant Enzymes Activity of Safflower (Carthamus tinctorius L.) Aged Seeds by Used of Gibberellin

2015 ◽  
Vol 48 (3) ◽  
pp. 33-41
Author(s):  
M. Khajeh ◽  
S.A. Tabatabaei ◽  
O. Ansari ◽  
F. Sharif Zadeh
Keyword(s):  
Enzyme Activity ◽  
Antioxidant Enzymes ◽  
Ascorbate Peroxidase ◽  
Seed Priming ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Vigor Index ◽  
Seedling Length ◽  
Germination Characteristics ◽  
Normal Seedling

AbstractSeed priming is one of the methods that can be taken to counteract the adverse effects of abiotic stress, also Seed priming treatments have been used to reduce the damage of aging and invigorate their performance in many crops. Objective of this study was to evaluation the effect of gibberellin on germination characteristics and antioxidant enzymes of safflower seeds after aging. Experimental design was a factorial one with complete randomized design with three replications. The first factor was priming by gibberellin (0 and 50 ppm) and non-primed seeds (control) and the secondary factor was combinations of four levels of aging (0, 1, 3 and 5 days of aging, at 43°C). The results showed that the priming and aging effects on germination percentage, germination index, normal seedling percentage, seedling length, vigor index, catalase and ascorbate peroxidase were significant, but on mean time to germination not significant. Results showed that, the highest germination characteristics such as; germination percentage, germination index, normal seedling percentage, seedling length, vigor index, catalase and ascorbate peroxidase were attained from priming by gibberellins, under non aged conditions. Also, our results indicated that seed aging is related to decrease of enzymes activity and may contribute to low seed germination efficiency, also priming increases enzyme activity and increases enzyme activity with priming treatment may contribute to improve germination characteristics. The general decreases in enzyme activity in the seed lowers the respiratory capacity, which in turn lowers both the energy (ATP) and assimilates supply of the germinating seed.

scholarly journals The Effect of Halo- and Hydro-Priming on Germination Characteristics of Millet Seeds Under Salinity Stress

2014 ◽  
Vol 47 (2) ◽  
pp. 41-48 ◽  
Author(s):  
M.A. Aghbolaghi ◽  
M. Sedghi
Keyword(s):  
Salinity Stress ◽  
Seedling Emergence ◽  
Dry Weight ◽  
Seed Priming ◽  
Germination Percentage ◽  
Utilization Efficiency ◽  
Seedling Length ◽  
Germination Characteristics ◽  
Normal Seedling ◽  
Four Levels

Abstract Low seed germination and seedling emergence is one of the main problems in saline areas. Seed priming technique has been known as a challenge to improve germination and seedling emergence under different environmental stresses. The objective of this research was to evaluate the effect of seed priming with NaCl and water on growth and seed reserve utilization of millet seeds under salinity stress. Treatments were combinations of four levels of salinity stress (0, ⊟4, ⊟8 and ⊟12 bar) and three levels of seed priming and control with three replicates. Results showed that with increase in salinity stress, germination components such as germination percentage, germination index, mean time to germination, normal seedling percentage, seedling length, seedling dry weight of utilized (mobilized) seed and seed reserve utilization efficiency decreased, but seed priming showed lower reduction. The highest germination characteristics and seed reserve utilization was obtained by halo-priming in control conditions. It is concluded that priming results in improvement in germination components of millet in salinity stress conditions.

scholarly journals The Effect of Hydro-Priming on Germination Characteristics, Seedling Growth and Antioxidant Activity of Accelerated Aging Wheat Seeds

2015 ◽  
Vol 47 (4) ◽  
pp. 41-48 ◽  
Author(s):  
E. Ghasemi ◽  
M. Goodarzian Ghahfarokhi ◽  
B. Darvishi ◽  
Z. Heidari Kazafi
Keyword(s):  
Electrical Conductivity ◽  
Peroxidase Activity ◽  
Dry Weight ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Seed Aging ◽  
Seedling Length ◽  
Normal Seedling ◽  
Mean Time ◽  
Aged Seeds

Abstract Seed aging is an important problem in developing countries which seeds stored in inappropriate condition. Delayed germination, reduced normal seedling percentage and changed antioxidant enzymes activity are some indications of aged seeds. Priming is a technique applied before planting and can improve seed characteristics especially under abiotic stress conditions. The main objective of the study was to evaluate aging effect on seed quality and to study the interaction between seed aging and seed priming. A factorial experiment based on completely randomized design with three replicates was conducted. The experimental treatments included cultivar, priming and aging. Results showed that seed aging reduced germination percentage, germination index, seedling length, normal seedling percentage, seedling dry weight, catalase and ascorbate peroxidase activity and increased the germination mean time and electrical conductivity of seeds. The highest germination percentage, germination index, seedling length, normal seedling percentage, seedling dry weight, catalase and ascorbate peroxidase activity and the minimum germination mean time and electrical conductivity of seeds were attained from hydro-priming treatment under non aged condition. Hydro-priming improved aged seeds quality and increased enzymes activity. Therefore, priming is a technique can be applied to improve aged seeds germination and seedling characteristics.

scholarly journals The Effect of Salinity Stress on Germination Characteristics and Changes Of Biochemically of Sesame Seeds

2014 ◽  
Vol 47 (2) ◽  
pp. 61-68 ◽  
Author(s):  
S.A. Tabatabaei ◽  
S.M. Naghibalghora
Keyword(s):  
Salinity Stress ◽  
Dry Weight ◽  
Germination Percentage ◽  
Proline Content ◽  
Percentage Germination ◽  
Sesame Seeds ◽  
Seedling Length ◽  
Germination Characteristics ◽  
Normal Seedling ◽  
Osmotic Potentials

Abstract Objective of this study was to evaluate the effect of salinity stress on germination characteristics and biochemical changes of sesame seeds. Salinity stress at osmotic potentials of 0 (as control), ⊟3, ⊟6, ⊟9 and ⊟12 bar were adjusted using NaCl before the start of the experiment. Our results showed that, the effect of salinity stress for all traits was significant. By increases of salinity stress, germination percentage, germination, normal seedling percentage, seedling length and dry weight were reduced the ascorbate peroxidase and catalase activity, also proline content were at minimum at control and increased with increase in salinity stress, expressed by the osmotic potential.

scholarly journals ALLELOPATHIC INFLUENCE OF TRIANTHIMA PORTULACASTRUM L. ON GROWTH AND DEVELOPMENTAL RESPONSES OF SESAME (SESAMUM INDICUM L.)

2017 ◽  
Vol 4 (2) ◽  
pp. 183-186
Author(s):  
Prabhakaran J ◽  
Kavitha D
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Germination Percentage ◽  
Sesamum Indicum ◽  
Negative Effects ◽  
Chlorophyll Contents ◽  
Whole Plant ◽  
Low Concentrations ◽  
Seedling Length ◽  
Developmental Responses

An experiment was conducted in order to determine the allelopathic effects of the aqueous extract of Trianthima portulacastrum L.on the seed germination, seedling growth and chlorophyll content ofsesame (Sesamum indicum L.). Greenhouse experiment was carried out as RCBD (Randomized complete block design)with four replications. Treatments included 0, 1, 2, 3 and 4% (W/W) residues of whole plant of T.portulacastrum with normal field soil. Results showed that the low concentrations of T.portulacastrum had no significant effect on the germination percentage, seedling length, dry weight, total chlorophyll contents at lower concentration(1%) of weed residues. However, treatments with higher concentrations had negative effects on germination, growth and seedling dry weight of sesame.

scholarly journals Development of priming technology for enhanced planting value of seeds in kabuli chickpea (Cicer arietinum L.)

2021 ◽  
Vol 13 (2) ◽  
pp. 735-743
Author(s):  
Umesh Hiremath ◽  
Basave Gowda ◽  
Lokesh G.Y . ◽  
B. S. Ganiger
Keyword(s):  
Root Length ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Shoot Length ◽  
Growth And Yield ◽  
Seedling Vigour ◽  
Seedling Length ◽  
Vigour Index

The continuous rise in global population demands more food production under limited land resources accompanied by climate change. More oversupply of quality seeds to meet ever-growing food demand is a highly challenging task. Seeds with low vigour level limit the growth and yield of crops at varied field conditions. Hence, an experiment was conducted to develop a technique for the fast and homogeneous growth of kabuli chickpea seeds. The priming treatments evaluated in the present study enhanced the various seed quality parameters of kabuli chickpea significantly when compared to control. Hydro-priming for 4 hours (at 20°C) and air drying for 72 hours showed better results compared to rest of the treatments both in fresh seeds which recorded higher first count (66.38%), germination (92.50%) root length (11.85 cm), shoot length (6.16), mean seedling length (18.01), dry seedling weight (747 mg), seedling vigour index-I (1665), higher speed of emergence (0.3992) and old seeds with higher first count (61.88%), germination (74.13%) root length (8.15 cm), shoot length (5.85 cm), mean seedling length (14.00 cm), seedling dry weight (611 mg), seedling vigour index-I (1056), higher speed of emergence (0.3814). The aged seeds have recorded 29 % increase in germination percentage in contrast to 8 percent increases in fresh seeds. Kabuli chickpea seeds could be subjected to hydropriming, an affordable, alternative, and eco-friendly technique for improving seed and seedling vigour of kabuli chickpea.

scholarly journals Effects of cycocel priming on growth and early development of rapeseed under drought stress

2013 ◽  
Vol 5 (1) ◽  
pp. 5-18
Author(s):  
Alireza Pourmohammad ◽  
Fariborz Shekari ◽  
Veeda Soltaniband
Keyword(s):  
Germination Rate ◽  
Dry Weight ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Stress Control ◽  
Positive Effects ◽  
The Third ◽  
Germination Characteristics ◽  
Three Stages ◽  
Total Dry Weight

Abstract An experiment was concluded to evaluate the effects of priming on germination characteristics and establishment of rapeseed seedlings during three stages. In the first and second stages of experiment, the effects at three factors vis: cultivars (RVS, Hayola), waterdeficit stress (Control,-6 and -12 bar) and cycocel treatment (dry seeds, 300, 600, 900, 1200 and 1500 μM) on germination and seedling growth of plant were assayed. The results showed that priming had positive effects on germination percentage, germination rate index, germination index, and radicle length under water-deficit conditions. RVS had greater efficiency than other cultivars. The third section of experiment revealed that the priming of RVS seeds improved the stem, root and dry weight, total dry weight as well as leaf number and area of seedlings.

scholarly journals Toxic Effects of Chromium on Growth of some Paddy Varieties

2015 ◽  
Vol 35 ◽  
pp. 36-44
Author(s):  
M. Nagarajan ◽  
K. Sankar Ganesh
Keyword(s):  
Growth And Development ◽  
Chromium Content ◽  
Dry Weight ◽  
Germination Percentage ◽  
Germination Process ◽  
Seedling Length ◽  
Cr Addition ◽  
Germination And Growth ◽  
Plant Seedlings ◽  
Toxicity Effects

Chromium is a serious heavy metal and it is considered as an environmental hazard. Toxicity effects of chromium on growth and development of plants including inhibition of germination process decrease of growth and biomass of plant. The aim of this research is to study the accumulation of Cr and its effect on the Germination and growth of some paddy varieties. Thus, the varieties such as ADT-43, ADT-45, IR-50, TKM-9, CO-33, ASD-16 and CO-43 are grown in petriplates treated with different concentrations of Chromium (0, 5, 10, 25, 50, 100, and 200 mg/L). After one week exposure the seedlings were removed and morphophysiological parameters like germination percentage, seedling length and dry weight of paddy varieties and accumulation of Cr were determined. The results indicated that the concentrations more than 100 mg/L chromium cause the reduction of morphophysiological parameters in the treatments rather than control and Cr addition in the cultures caused enhancement of chromium content in roots and shoots of plant seedlings. It was also noted that accumulation of chromium in the roots was much higher than the shoots of the paddy seedlings under treatment.

scholarly journals Effect of seed priming with kinetin on germination indices and proline activity of Silybum marianum L. under drought stress conditions

2015 ◽  
Vol 9 (1) ◽  
pp. 6-11
Author(s):  
Abolfazl Masoumi Zavariyan ◽  
Mojtaba Yousefi Rad ◽  
Mohsen Asghari
Keyword(s):  
Drought Stress ◽  
Germination Rate ◽  
Dry Weight ◽  
Seed Priming ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Silybum Marianum ◽  
Randomized Design ◽  
Seedling Length ◽  
Germination Indices

For investigation of the effect of seed priming by kinetin on germination indices and proline activity of Silybum marianum  L. under drought stress, factorial experiment based on completely randomized design with two factor includingdifferent concentrations of kinetin (0, 10 and 20 ppm) and different levels of drought stress including 0, -6 and -12 barat three replicates was carried out. According to the results, drought stress and kinetin individualy cause to decreases of germination percentage, germination rate, seedling length, seed vigor and seedling dry weight but uses of kinetin in drought stress condition improvment of them. Also, drought stress cause to increases of proline content and catalase activity. Therefore, seed priming with 10 ppm kinetin at drought stress was improved the germination indices of Silybum marianum L.DOI: http://dx.doi.org/10.3126/ijls.v9i1.11919 International Journal of Life Sciences Vol.9(1) 2015 6-11

scholarly journals Influence of seed priming on germination characteristics of sorghum (Sorghum bicolor L. Moench)

2021 ◽  
Vol 911 (1) ◽  
pp. 012086
Author(s):  
Ramlah Arief ◽  
Fauziah Koes ◽  
Oom Komalasari ◽  
Fatmawati
Keyword(s):  
Seed Quality ◽  
Germination Rate ◽  
Primary Root ◽  
Dry Weight ◽  
Seed Priming ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Seed Vigor ◽  
Germination Characteristics ◽  
Positive Effect

Abstract Seed priming or invigoration is presowing treatments of improving germination aimed to reduce the time from sowing to emergence and improving emergence uniformity. Research on seed priming was conducted Indonesian Cereal Research Institute (ICERI) seed laboratory from January until March 2021 to evaluate the effect of seed priming on sorghum seed vigor. Seed quality parameters includes germination percentages, germination rate, shoot and primary root length, seedling dryweight, Sorghum seed variety of Suri 4 were used as seed material. Results showed that among the priming treatments that give positive effect on germination percentage, germination rate, seedling dry weight were priming treatment with KNO3 1.5%.

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