Effects of different priming treatments and priming durations on germination percentage of parsley (Petroselinum crispum L.) seeds

Abstract

The effects of different priming treatments and priming durations on germination percentage at different temperatures in parsley seeds were studied. The seeds were treated for 2, 4, 6 and 8 days with the PEG 6000 (–0.5 MPa, –1.0 MPa and –1.5 MPa), KNO3 (0.30 mol/L and 0.35 mol/L), Mannitol (0.50 mol/L and 0.60 mol/L) and hydropriming (12h, 24h, 36h and 48h) and unprimed (control). Germination studies were made at 5, 10, 15, 20 and 25°C. Percentage of germination at different temperatures was significantly affected by priming treatments. Hydropriming (12h, 24h and 36 h) and mannitol 0.60 mol/L at 2 day generally had the highest germination percentages. In general, the highest germination percentage with priming was determined at 10°C. It may be said that seed priming treatments increased seed germination percentage at both low and high temperatures. The highest germination percentages were observed in both hydropriming and mannitol treatments as compared with PEG and KNO3 treatments. The PEG and KNO3 (2 and 4 days) treatments were better than unprimed treatment in all of the temperatures

Embebição de sementes de salsa com Ascophyllum nodosum: efeitos na germinação e crescimento de plântulas sob estresse térmico

“…Cabe ainda destacar que, mesmo no tratamento testemunha, os valores de germinação foram de 51 e 66%, para cultivares crespa e lisa, respectivamente, valor relativamente baixo. Contudo, para essa espécie, em função da sua dificuldade de germinação, tal valores são frequentemente relatados, como por exemplo nas pesquisas de Khan et al (2017), Oliveira et al (2013) e Dursun & Ekinci (2010), em que as médias foram 70%, 62% e 50,9%, respectivamente. Em relação às plântulas anormais, houve um elevado percentual para o cultivar lisa (figura 3D), mesmo na condição ideal de temperatura (20ºC), indicando baixo potencial fisiológico das sementes.…”

Rapid Evaluation of Germinability of Primed China Aster (Callistephus Chinensis Ness.) Seeds with Physiological and Biochemical Markers

“…hydropriming, osmopriming, solid matrix prim-ing can be used. Priming includes pre-sowing of seeds at controlled hydration followed by their incubation, which results in pre-germinative metabolic activation to the degree not allowing the radicle to protrude through the seed coat (Nascimento & Aragao 2004;Dursun & Ekinci 2010). In order to evaluate seed ability for germination, different methods were applied, as automatic evaluation of germination based on the automated germination scoring system (the image analysis) (Joosen et al 2010) or evaluation of glowing of substances emitted by seeds such as sinapine in cabbage (Taylor et al 1993).…”

Seed priming with polyethylene glycol regulating the physiological and molecular mechanism in rice (Oryza sativa L.) under nano-ZnO stress

“…Polyethylene glycol (PEG) has been used frequently in plant water deficit studies to induce dehydration by decreasing water potential 12 . It is observed that priming with PEG can shorten the time to seed emergence and increases the germination percentage 13 , and improves salt tolerance 14 . Moreover, seed priming with PEG enhances the chilling tolerance 15 .…”