scholarly journals Allelopathic effects of Stellaria media (L.) Vill. on germination and early stages of growth of Raphanus sativus var. radicula

2018 ◽  
Author(s):  
Peiman Zandi ◽  
Beata Barabasz-Krasny ◽  
Alina Stachurska-Swakoń ◽  
Joanna Puła ◽  
Katarzyna Możdżeń
Keyword(s):  
Seedling Growth ◽  
Electrolyte Leakage ◽  
Raphanus Sativus ◽  
Germination Rate ◽  
Control Group ◽  
Stellaria Media ◽  
Raphanus Sativus L ◽  
The Impact ◽  
Radish Seedlings ◽  
Growth Of Seedlings

Influence of aqueous extracts of aboveground organs of common crop weeds Stellaria media on germination and seedlings growth of radish (Raphanus sativus L. var. radicula Pers.) was studied. Three different cultivars of radish (i.e. ‘Rowa’, ‘Krakowianka’, and ‘Półdługa’) were used to investigate if Stellaria media could produce allelopathins and if the impact of allelopathins differs between cultivars. The influence of allelopathins in various form of extracts was checked, i.e. decoction, infusion, and macerate, as the impact on germination rate, seedling growth (length and mass), and electrolyte leakage. Compared to the control group (distilled water used) the germination rate of radish seeds was lower, independently of the type of S. media extracts used. The growth of seedlings differed between cultivars and form of extract. It was noticed the inhibition of seedling growth for ‘Półdługa’ cultivar independently of extract form. The growth of two other cultivars was stimulated by the infusion, and slightly inhibited by the decoction and macerate. The extracts reduced the outflow of electrolytes through the cell membranes of radish seedlings of all but one the analysed radish cultivars. The exception was the macerate, which in the ‘Rowa’ cultivar caused the increase of the electrolyte leakage.

scholarly journals Allelopathic effect of goosefoot on germination and early stage growth of triticale and radish

2020 ◽  
pp. 110-128
Author(s):  
Katarzyna Lipniak ◽  
Angelika Kliszcz
Keyword(s):  
Water Content ◽  
Electrolyte Leakage ◽  
Raphanus Sativus ◽  
Early Stage ◽  
Chenopodium Album ◽  
Dry Mass ◽  
Inhibitory Effect ◽  
Allelopathic Effect ◽  
Raphanus Sativus L ◽  
Radish Seedlings

The aim of this study was to investigate the effect of aqueous extracts from Chenopodium album L. on germination and early stages of triticale grains (×Triticosecale Wittm. ex A.Camus) and radish seeds (Raphanus sativus L.). Germination indexes, fresh and dry mass, water content and electrolyte leakage were measured. Studies revealed the different germination capacity of triticale grains and radish seeds, where increased concentrations of allelopathins in aqueous C. album extracts significantly inhibited seedling growth for both species. The extracts had an inhibitory effect on the growth of seedling fresh mass. An increase in dry mass of radish seedlings was demonstrated for each of the extracts and, for triticale seedlings, only at concentrations of 0.5% and 1.5%. Water content in triticale and radish seedlings varied depending on the concentration of allelopathins in the extract. With increasing concentrations of C. album extract, regardless of seedling type, a statistically significant increase in electrolyte leakage was observed.

scholarly journals Effect of Aqueous Extracts from Solidago Canadensis L. Leaves on Germination and Early Growth Stages of Three Cultivars of Raphanus Sativus L. Var. Radicula Pers

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1549
Author(s):  
Katarzyna Możdżeń ◽  
Beata Barabasz-Krasny ◽  
Peiman Zandi ◽  
Angelika Kliszcz ◽  
Joanna Puła
Keyword(s):  
Raphanus Sativus ◽  
Early Growth ◽  
Growth Stages ◽  
Solidago Canadensis ◽  
Initial Growth ◽  
Aqueous Extracts ◽  
Total Chlorophyll Content ◽  
Allelopathic Interaction ◽  
Raphanus Sativus L ◽  
Radish Seedlings

Solidago canadensis L. is an expansive perennial that forms persistent, species-poor plant communities. It often spreads in fallow areas, displacing native floristic ingredients. Its expansiveness is largely due to morphological features, but it can also be the effect of allelopathic interaction. The aim of the experiment was to investigate the effect of aqueous extracts (decoction, infusion, and maceration) from dry S. canadensis leaves on germination and early growth stages of Raphanus sativus L. var. radicula Pers., in three cultivars: ‘Rowa’, ‘Półdługa’, and ‘Krakowianka’. In comparison to the control, the percentage of germinated radish seeds of ‘Rowa’ cultivar was statistically lower on the infusion and macerate. Regardless of the cultivar, the smallest changes in germination were found in seeds watered with decoction, and the largest with macerate. Seedlings length was most inhibited on macerate substrates, and least with infusion. Regardless of the form of the extract, each of them negatively affected the initial growth of radish seedlings. A fresh mass of ‘Rowa’ seedlings was inhibited by all Canadian goldenrod extracts. In relation to the control, the ‘Krakowianka’ cultivar was the least sensitive to S. canadensis extracts. The total chlorophyll content was the lowest in the seedlings of the ‘Rowa’ and ‘Półdługa’ cultivars germinated on macerate, compared to the control and two others extracts. The percentage of electrolyte leakage depended on the type of extract used and the radish cultivar. The study showed that depending on the cultivar, the aqueous extracts from S. canadensis leaves decreasing of germination and early growth of R. sativus.

scholarly journals Elucidation of seed dormancy and phytohormones by germination after exogenous foliage whey application

1970 ◽  
pp. 08-14
Author(s):  
Jadhav Rajesh K, Pranay Mulam, Khot Vidhesh
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Seedling Growth ◽  
Rapid Growth ◽  
Germination Rate ◽  
Exogenous Application ◽  
Paper Towel ◽  
Leguminous Seeds ◽  
Growth Of Seedlings ◽  
Leaf Juice

A study was conducted with an aim of achieving 100% seed germination and to evaluate the rate of dormancy upon exogenous application of the deproteinised leaf juice (DPJ) in various leguminous and non leguminous seeds. DPJ if inducing retardation of dormancy, the activity of enzyme was analysed to prove the presence of phytohormones. DPJ from the three non leguminous foliages of brinjal, radddish and dasheen were prepared by green crop fractionation. The seed germination results obtained by the paper towel method and the activity of enzyme protease in DPJ of radish and Colocasia leaves separately. There was variation in germination rate by different DPJ influence. Some seeds showed fast germination while some germinated late. Few seeds were not germinated by control. In some seeds, DPJ decreased the rate of germination while on the contrary there was rapid growth of seedlings by the potentiality of DPJ. DPJ found mutagenic by its influencing inhibitory expression in seedling growth in some cases. The enzyme protease released by phytohormone gibberellin during the seed germination. Positive glyoxlic test indicated presence of auxins in whey.

scholarly journals Variation of seed sizes and its effect on germination and seedling growth of mahogany (Swietenia macrophylla)

2019 ◽  
Vol 20 (9) ◽  
Author(s):  
AGUS ASTHO PRAMONO ◽  
DIDA SYAMSUWIDA ◽  
Kurniawati Purwaka Putri
Keyword(s):  
Seed Size ◽  
Seedling Growth ◽  
Germination Rate ◽  
Fruit Size ◽  
Seed Viability ◽  
Initial Growth ◽  
Seed Selection ◽  
Swietenia Macrophylla ◽  
Seed Collection ◽  
Growth Of Seedlings

Abstract. Pramono AA, Syamsuwida D, Putri KP. 2019. Variation of seed sizes and its effect on germination and seedling growth of mahogany (Swietenia macrophylla). Biodiversitas 20: 2576-2582. To get high-quality seeds, the size of seed is often suggested to be criteria of selection in seed collection. However, the size is not always effective to be used as a basis for seed selection. The study is aimed to determine the variation of mahogany (Swietenia macrophylla) seed sizes and its effect on the germination and seedlings growth. The fruits were collected from stands of mahogany in Jonggol and Parung Panjang, Bogor District, Indonesia. The seeds were grouped into 5 classes based on seed size. The observation was conducted on seed viability of each size class as well as the growth of seedlings until 3 months old. The results showed that the seed size of mahogany was affected by position of the seeds inside the fruit, the mother trees, and fruit size. The seeds size of < 6 cm long had significantly lower germination rate and capacity than those seeds of more than 6 cm long. The size of seeds affected the initial growth of seedlings, but did not influence the subsequent growth of seedling after 3 months old. The selection of seeds was done by removing the seeds of less than 6 cm long.  

scholarly journals Responses of Seed Germination, Seedling Growth, and Seed Yield Traits to Seed Pretreatment in Maize (Zea maysL.)

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Yu Tian ◽  
Bo Guan ◽  
Daowei Zhou ◽  
Junbao Yu ◽  
Guangdi Li ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Yield ◽  
Seedling Growth ◽  
Germination Rate ◽  
Seed Priming ◽  
Grain Weight ◽  
Shoot Biomass ◽  
Control Group ◽  
Yield Traits ◽  
Seed Pretreatment

A series of seed priming experiments were conducted to test the effects of different pretreatment methods to seed germination, seedling growth, and seed yield traits in maize (Zea maysL.). Results indicated that the seeds primed by gibberellins (GA), NaCl, and polyethylene glycol (PEG) reagents showed a higher imbibitions rate compared to those primed with water. The final germination percentage and germination rate varied with different reagents significantly (P<0.05). The recommended prime reagents were GA at 10 mg/L, NaCl at 50 mM, and PEG at 15% on account of germination experiment. 15% PEG priming reagent increased shoot and root biomass of maize seedling. The shoot biomass of seedlings after presoaking the seeds with NaCl reagent was significantly higher than the seedlings without priming treatment. No significant differences of plant height, leaf number, and hundred-grain weight were observed between control group and priming treatments. Presoaking with water, NaCl (50 mM), or PEG (15%) significantly increased the hundred-grain weight of maize. Therefore, seed pretreatment is proved to be an effective technique to improve the germination performance, seedling growth, and seed yield of maize. However, when compared with the two methods, if immediate sowing is possible, presoaking is recommended to harvest better benefits compared to priming method.

scholarly journals The Salinity Effects on Germination and Early Seedling Growth of Bean Plants (Bean Phaseolus)

2020 ◽  
Keyword(s):  
Seedling Growth ◽  
Germination Rate ◽  
Petri Dish ◽  
Normal Weight ◽  
Bean Plant ◽  
Control Group ◽  
Early Seedling Growth ◽  
Bean Plants ◽  
Root And Shoot Length ◽  
Early Seedling

The study was conducted at Dilla University, in the laboratory of Biological sciences to see the effects of salinity on germination and early seedling. Objectives:Background: It is estimated that the world 20% of farming land and 50% of cropland is salt stressed and salinity decreases the germination of seed, retards the growth of plant and so it reduces the yield of crop. Objectives: The major objective of this research was to evaluate the effects of salinity on the germination and early seedling growth of bean plants. Specifically, to investigate salt tolerant efficiency, salt effect on seed germination and its rate and growth of bean plant at different concentration of NaCl. Methodology: The experiment required 21 groups, of which 20 of them were experimental with different salt concentrations ranging from 0.05M to 1.00M with 0.05M difference and one control group. Each group contain three bean seed measuring its weight using electronic balance machine, sterilized with 70% Alcohol solution for 15 seconds, rinsed with distilled water, placed in separate Petri dish using a forceps, 50ml of solution were added to each Petri dish with different concentration, all Petri dishes were covered with lids and kept into incubator at room temperature for 17 days, germinated seed were counted, seedlings root and shoot length were measured using a ruler. Finally, the Bean was transferred to non-saline condition, weight of germinated Bean were measured to compare with their normal weight and to determine the effects of salt on seed weight, which was conducted in triplicates. All necessary data was taken, analyzed and interpreted in the form of percentage, graph, tables and figures. Result: When the concentration of salt increased the Bean plant is extremely affected, germination rate decreased and the terminal weights of seed were become lower than the initial weight due to the absorption of water by seed. Conclusions: The rate of germination decrease when the salt concentration increased and late growth of length of root and shoot when the salt dosage is highest and also the weights of seed reduced as concentration of salt is raised. Generally, as the concentration of salt is increased the Bean plant is extremely affected.

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