Effects of Environmental Factors on Germination and Emergence of Swallowwort

Pahlevani, Amir Hossein; Rashed, M. H.; Ghorbani, Reza

doi:10.1614/wt-07-055.1

Cited by 14 publications

(7 citation statements)

References 21 publications

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“…This indicates that the germination rate increased with increasing the water energy, or that irrigation with microwave treated water in a higher power. This may be because the excess kinetic energy of the treated water increased the conversion of seed starch into sugars that agree with (Pahlevani et al, 2008). Around 90 s exposure duration at 30 w and 50w power were observed as the best value for seedling enzymes.…”

Section: Resultssupporting

confidence: 55%

Antioxidant enzyme response of medical plant Persian Fenugreek (Trigonella foenum-graecum L.) to irrigation with microwaves treated water

Guda

Hadi

Alasedi

et al. 2021

ijrps

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The research, influences of different energy microwaves treated water on the antioxidant enzyme of Trigonella foenum-graecum (T. foenum ) were studied. The analysis was carried out in 2020 in the laboratories of Ecology Department, College of Science under stable variables such as temperature, humidity, sunlight. The antioxidant enzyme, The catalase (CAT), ascorbate peroxidase (APX), superoxide dismutase (SOD) and peroxidase (POD) activity in T. foenum (hypocotyl and radical) were measured after twenty days of experiments. Results showed that germination was increased with water energy, and all enzymes activity were increased in low energy treated water gradually but decreased rapidly in high energy treated water. hypocotyl showed a higher response than Radical. (CAT) and (SOD) enzymes activity rises slowly in 30w* until it reaches a peak in 50 w * 120 s then decreases rapidly in 70 w * 150 s and whenever the time of treatments increased the enzyme becomes less effective. Both (APX) and (POD) had the same response but showed an increase in activities at 30W. The results improve that microwaves treated water-induced antioxidant enzyme response in T. foenum. While the specified energy level and duration showed a better growth rate compared to regular watering water. The results of this research serve those interested in developing cultivation and water treatment methods and improving our understanding of T. foenum irrigation behaviour using microwave treated water.

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Section: Resultssupporting

confidence: 55%

Antioxidant enzyme response of medical plant Persian Fenugreek (Trigonella foenum-graecum L.) to irrigation with microwaves treated water

Guda

Hadi

Alasedi

et al. 2021

ijrps

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“…(2008) reported that alternating temperatures can result in a higher seed germination rate than that seen at constant temperatures for Hibiscus trionum . Whereas, Ellis and Barrett (1994) and Pahlevani et al. (2008) did not find any clear effect of alternating temperature within the optimum range for seed germination in Lens culinaris and Cynanchum acutum , respectively.…”

Section: Resultsmentioning

confidence: 69%

Factors affecting the seed germination and seedling emergence of redflower ragleaf (Crassocephalum crepidioides)

Nakamura¹

2009

Weed Biology and Management

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Redflower ragleaf (Crassocephalum crepidioides) is a weed, as well as a minor vegetable, in tropical and subtropical regions of the world. The influence of environmental factors and seed conditions on the germination and emergence of redflower ragleaf have been evaluated in order to help understand its distribution and to develop effective management strategies.The seeds germinated at a constant temperature in the range of 10-30°C and reached a maximum at 15-20°C. The highest germination rate was recorded at an alternating temperature of 20/15°C (day/night). The seeds germinated over a wide pH range (2-12), with the highest germination rate at between 4 and 10. Germination under saturated and flooded conditions was also high.The germination of seeds from opened (mature) capitula was significantly higher than from partially opened or unopened capitula.The germination of seeds without a pappus was significantly higher than for seeds with a pappus.The germination rate of 1 year old seeds decreased drastically when compared to that of freshly harvested seeds.The seedling emergence rate was~63% for those seeds placed on the soil surface, but no seedling emerged from a depth of Ն1 cm. These results indicate that redflower ragleaf seeds can germinate in various environmental conditions, but that the percentage that germinates will be different in different environments. Regeneration could be effectively prevented by at least a 1 cm soil covering or by destroying the plant before the capitula open. In contrast, freshly harvested seeds from opened capitula should be sown on the soil surface when redflower ragleaf is to be cultivated as a vegetable.

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“…Physiological processes in some weeds are negatively affected by soil salinity (DiTommaso, 2004;Chauhan & Johnson, 2008b). High salt concentration inhibits the germination of many weed seeds and it ultimately leads towards death (Koger et al, 2004;Pahlevani et al, 2008;Nemati et al, 2011), with some exceptions as a few types of weed seeds show tolerance to high salt concentrations (Chauhan & Johnson, 2008c). Seed burial depth also affects its germination and seedling emergence (Koger et al, 2004;Mennan & Ngouajio, 2006).…”

Section: Introductionmentioning

confidence: 99%

Germination ecology of wild onion: a rainfed crop weed

et al. 2014

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-Asphodelus tenuifolius is becoming a more common weed in rain-fed area in Pakistan. Laboratory and greenhouse experiments were conducted to determine the effect of different environmental factors on germination and emergence of A. tenuifolius. Results showed that A. tenuifolius can tolerate a wide range of varying environmental factors. Greatest percentage of germination (80%) was recorded at 15 o C constant temperature; however, considerable germination occurred at 20 and 25 o C. Light for 10 h photoperiod stimulate germination of Asphodelus tenuifolius compared with complete darkness. Germination was totally inhibited at osmotic stress higher than -0.8 MPa. There was no significant difference in germination at pH 6 to 8; however, there was a slightly decrease at pH 9, compared with distilled water. Asphodelus tenuifolius was very sensitive to salinity; however, a few seeds of A. tenuifolius were able to germinate even at 150 mM NaCl concentration. Greatest emergence occurred with seed placed at soil surface and emergence decreased with increase in burial depth. No emergence occurred from 4 cm or greater. This information may aid in developing tools and strategies for management.Keywords: Asphodelus tenuifolius, temperature, water stress, salt stress, pH, seedling emergence, seeding depth. RESUMO -Asphodelus tenuifolius está se tornando uma planta daninha cada vez mais comum em plantio de sequeiro no Paquistão. Foram realizados experimentos no laboratório e na estufa para avaliar a influência de diferentes fatores ambientais na germinação e emergência da Palavras-chave:Asphodelus tenuifolius, temperatura, estresse hídrico, estresse salino, pH, emergência de plântulas, profundidade de semeadura.

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Effects of Environmental Factors on Germination and Emergence of Swallowwort

Cited by 14 publications

References 21 publications

Antioxidant enzyme response of medical plant Persian Fenugreek (Trigonella foenum-graecum L.) to irrigation with microwaves treated water

Antioxidant enzyme response of medical plant Persian Fenugreek (Trigonella foenum-graecum L.) to irrigation with microwaves treated water

Factors affecting the seed germination and seedling emergence of redflower ragleaf (Crassocephalum crepidioides)

Germination ecology of wild onion: a rainfed crop weed

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