Desiccation, postharvest maturity and seed aging of tall oat-grass

Stanisavljević, Rade; Djokic, D.; Milenković, Jasmina; Terzić, Dragan; Djukanovic, L.; Stevović, V.; Dodig, Dejan

doi:10.1590/s0100-204x2010001100010

Cited by 6 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dormancy causing reduced germination immediately after harvest was also present in seeds of other fodder grasses conventionally dried. For instance, 31% of dormant seeds present in Arrhenatherum elatius resulted in germination of 57% (Stanisavljević et al 2010b), while seed germination in Lolium multiflorum, Dactylis glomerata and Phleum pretense amounted to 58, 52 and 62%, respectively (Stanisavljević et al 2011). Very low seed germination (about 50%) was recorded in Brachiaria brizantha (Dias and Toledo 1993), but the dormancy in these seeds if exposed to the temperature of 70°C for 10 and 15 min would be reduced and germination would be increased without adverse effects on physiological quality of seeds (Martins and Silva 2001).…”

Section: Resultsmentioning

confidence: 99%

Drying of meadow fescue seeds of different moisture contents: Changes in dormancy and germination

Stanisavljević¹,

Milenković²,

Djokic³

et al. 2013

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

In the past few years in Europe grass seed production declines. This tendency is especially pronounced in meadow fescue. Seed shedding and therefore yield losses are the problem in seed production. This can be reduced if seed of higher moisture contents is harvested. The impacts of drying temperatures of 70, 60, 50, 40 and 22°C on changes in dormancy and germination of seed harvested with moisture contents of 45, 35 and 25% were observed in the present study. The analysis was done immediately after seed drying, then three months later and eight months later. Seeds with the moisture content of 45% that were dried at 70°C were not dormant at all after harvest, but seeds were damaged, which resulted in reduced germination. Drying temperatures of 40°C and 50°C resulted in maximum germination of seed harvested with 45% moisture after three months. After eight months the best germination of all seeds was obtained at 22°C and 40°C. The seed ageing test confirmed faster deterioration of seeds harvested with higher moisture contents. Seed harvested with 25% moisture and dried at 22°C is the most suitable seed for longer storage.

show abstract

Section: Resultsmentioning

confidence: 99%

Drying of meadow fescue seeds of different moisture contents: Changes in dormancy and germination

Stanisavljević¹,

Milenković²,

Djokic³

et al. 2013

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

show abstract

“…However, little data has been gathered on physiological mechanisms regulating reduced radicle growth during seed ageing. Studies on leading forage grasses of the genus Festuca and Arrhenatherum elatius also showed that the period of poorer seed germination is followed by a weaker growth of the embryonic shoot, radicle and seedling weight (STANISAVLJEVI et al, 2010a;2010c).…”

Section: Resultsmentioning

confidence: 99%

Seed germination and seedling vigour of italian ryegrass, cocksfoot and timothy following harvest and storage

Stanisavljević¹,

Djokic²,

Milenković³

et al. 2011

Ciênc. agrotec.

Self Cite

View full text Add to dashboard Cite

During post-harvest maturation, different species vary in the length of dormancy breaking or germination increases. Seed dormancy and slow seedling development often limit establishment of forage grass stands. Seed germination and seedling vigour of Italian ryegrass (Lolium italicum A. Braun, Synonym Lolium multiflorum L.), cocksfoot (Dactylis glomerata L.) and timothy (Phleum pretense L.) were observed after harvest and storage. After harvest in June, seeds were stored under standard storage conditions and sampled every 30 days after harvest (DAH), up to 270 DAH, and then every 60 days up to 990 DAH. At each date, seeds were tested for final germination percentage and for seedling vigour traits. Timothy seeds had a maximum germination (88%) and the best seedlings vigour at 90 DAH, which implies that early autumn (September-October) is the best sowing period for freshly harvested seeds of timothy. Timothy seed germination was poor from 270 DAH (73%). The best germination and vigour of Italian ryegrass and cocksfoot seedlings were between 270 and 330 DAH, which equates to spring sowing time (March-April) in the succeeding year. Cocksfoot and Italian ryegrass seeds maintained satisfactory germination levels up to 630 DAH (81%) and 810 DAH (81%), respectively. The data can serve for the determination of a proper storage duration management between harvest and sowing of the tested species under ambient conditions of south-eastern Europe.Index terms: Forage grasses, post-harvest maturation, seed dormancy. RESUMODurante o armazenamento, diferentes espécies comportam-se diferentemente quanto à dormência e crescimento de plântulas. A dormência o desenvolvimento lento das plântulas limitam a época do plantio das gramíneas forrageiras plurianuais. A germinação de sementes e o crescimento das plântulas de azevem italiano (Lolium italicum A. Braun sin. Lolium multiflorum L.), Dactilis (Dactilis glomerata L.) e de timoteo (Phleum pratense L.) foi pesquisada durante a maturação pós-colheita e a silagem. Após a colheita, em junho, sementes foram armazenadas em condições tradicionais e analisadas a cada 30 dias após a colheita, até 270 dias e, em seguida, a cada 60 dias até 990 dias. Nessa pesquisa, avaliou-se a germinação final e o vigor das plântulas. As sementes de timoteo obtiveram germinação máxima (88%) e o melhor crescimento das plântulas após 90 dias de armazenamento, indicando que o melhor período para o plantio das sementes colhidas em junho é o inicio de outono (setembro-outubro). A germinação de sementes de timoteo reduziu nos 270 dias (73%) seguintes. A melhor germinação, e crescimento da plântula do azevem italiano e do dactilis ocorreu entre 270 e 330 dias, indicando que a melhor época para plantio é na primavera (março-abril), do ano seguinte. As sementes de dactilis e azevem italiano mantiveram germinação satisfatória até 630 dias (81%) e 810 dias (81%), respectivamente. Essa pesquisa pode servir para determinação de gerenciamento adequado de duração de armazenamento entre a colheita e o plantio das esp...

show abstract

“…On the other hand, current seed trading regulations in the Southeastern European countries require a germination rate that exceeds 70%. Currently the germination rate of tall oatgrass (Arrhenatherum elatius) is 63% (Stanisavljević et al, 2010a), that of Italian ryegrass (Lolium multiflorum) is 66%, that of cocksfoot (Dactylis glomerata) is 57% (Stanisavljević et al, 2011), and that of meadow fescue (F. pratensis) is approximately 63% (Stanisavljević et al, 2010b). These germination rates prevent commercial sale of the seed in southeastern Europe.…”

Section: Methodsmentioning

confidence: 99%

“…According to the conclusions of Stanisavljević et al (2010aStanisavljević et al ( , 2010bStanisavljević et al ( , 2011 and Rozman et al (2010), increased rates of germination of seeds of perennial forage grasses is accompanied by increased seedling vigour. A high rate of seed germination this creates conditions for successful establishment of grass species when competing with weeds and other species found in mixtures of seeds.…”

Section: Sheep Fescuementioning

confidence: 99%

Acid and Temperature Treatments Result in Increased Germination of Seeds of Three Fescue Species

Stanisavljević

Vuckovic

Simić

et al. 2012

Not Bot Hort Agrobot Cluj

View full text Add to dashboard Cite

Efficient germination of fescue seeds is essential for successful establishment of meadows and pastures. This research was conducted to ascertain the effects of various acid and temperature treatments on seed germination in three fescue species: Festuca rubra, F. ovina, and F. pratensis. Seeds from different cultivars, populations, or lots were exposed either to four concentrations of sulfuric acid at three different time intervals (12 treatments) or six different temperatures at three different time intervals (18 treatments). Despite all belonging to the genus Festuca, the seed from different species responded differently to the treatments. The three optimum treatments for F. rubra seed involved soaking in a 75% solution of sulfuric acid for 20 minutes (improved the germination rate by 19%), soaking in a 50% solution of sulfuric acid for 30 minutes (improved the germination rate by 18%) and exposure to either 60°C or 70°C for 90 minutes (improved the germination rate by 17%). For F. ovina seed, optimal treatments included soaking seeds for either 10 or 20 minutes in a 50% sulfuric acid solution (both treatments improved germination rates by 13%) or exposing seeds for 30 minutes in a 25% sulfuric acid solution and 80°C for 60 minutes (improved germination rate by 12%). Two optimal treatments were identified for F. pratensis seed. Whereas the first involved soaking the seeds in a 75% sulfuric acid solution for 30 minutes (improved germination rates by 22%), the second involved either exposing the seeds to 90°C for 90 or 60 minutes, or exposing the seeds to 80°C for 90 minutes (improved germination rate by 21%). Our findings indicate that if fescue seed is to be sown during the autumn (two to three months after seed collecting), treating it with acid and temperature can significantly enhance its germination.

show abstract

Desiccation, postharvest maturity and seed aging of tall oat-grass

Cited by 6 publications

References 14 publications

Drying of meadow fescue seeds of different moisture contents: Changes in dormancy and germination

Drying of meadow fescue seeds of different moisture contents: Changes in dormancy and germination

Seed germination and seedling vigour of italian ryegrass, cocksfoot and timothy following harvest and storage

Acid and Temperature Treatments Result in Increased Germination of Seeds of Three Fescue Species

Contact Info

Product

Resources

About