Behrooz Salehi-Eskandari; Farzaneh Aslani
Abstract
Echinophora platyloba is an aromatic perennial plant belonging to the family Apiaceae which is used as food seasoning and persevering in Iran and the shoots have medicinal properties. This study aimed to investigate treatments of moist chilling (0,30, 45, 70 and 90 days), gibberellic acid (GA3; 0, 500, ...
Read More
Echinophora platyloba is an aromatic perennial plant belonging to the family Apiaceae which is used as food seasoning and persevering in Iran and the shoots have medicinal properties. This study aimed to investigate treatments of moist chilling (0,30, 45, 70 and 90 days), gibberellic acid (GA3; 0, 500, 1000 and 2000 mg/L) and scarification alone or a combination of these treatments for breaking seed dormancy of E. platyloba. The dormancy of the seeds was broken only after 90 days of moist chilling. Pretreatment GA only at the highest level (2000 mg/L) could induce seed germination (GP; 33%), the highest GP (50%) and germination index (GR; 3 seeds per day) was recorded in moist chilling treatment 45 days with GA3 treatment of 1000 mg/L. The lowest of GR was related to moist chilling treatment for 90 days and moist chilling treatment for 30 and 70 days with GA3 treatments of 500 and 2000 mg/L. The scarification treatment alone or combined with other treatments does not affect germination parameters.
Mahmood Abadeh; Malihe Sadeghi Bahmani; hamed hasanzadeh khankahdani; Maryam yektankhodaei
Abstract
This experiment was conducted as a factorial based on a completely randomized design with four replications and the first factor was Culture medium with two levels: laboratory and Greenhouse, and the second factor was seed pre-treatment with five levels: Control, Leaching for 12 hours, Leaching for 12 ...
Read More
This experiment was conducted as a factorial based on a completely randomized design with four replications and the first factor was Culture medium with two levels: laboratory and Greenhouse, and the second factor was seed pre-treatment with five levels: Control, Leaching for 12 hours, Leaching for 12 hours and Soaking in gibberellic acid for 12 hours, Scarification with sandpaper and Scarification with sandpaper and Soaking in gibberellic acid for 12 hours. The results showed that in Greenhouse vegetative traits of plumule length (78.6 mm), radicle length (109.34 mm), seedling dry weight (102.7 mg), allometric coefficient (0.72) and seedling vigour (95) were higher than the laboratory (p<0.05). The results also showed that leaching and soaking in gibberellic acid pre-treatment increased indices and traits germination rate (5.56), mean daily germination (1.9), peak value (2.48), germination value (6.1), plumule length (61.9 mm), radicle length (86.1 mm), seedling dry weight (82.2 mg) and seedling vigour (94.3) (p<0.05). This pre-treatment also reduced day to beginning germination index (5.6) (p<0.05). The results of mean comparison of the interaction effect of Culture medium and Pre-treatment showed that in Greenhouse leaching and soaking in gibberellic acid pre-treatment reduced day to beginning germination index (4.2) and increased vegetative traits of plumule length (93 mm), radicle length (129.2mm), seedling dry weight (120.8 mg) and seedling vigour (124.9) (p<0.05).
Akram Abdolmaleki; Ghasem Tohidloo; Samira Shahbazi
Abstract
This research was carried out to investigate the effect of using seed treatment by Carboxin Thiram, Imidacloprid, polymer, GA3 and Trichoderma (Wild and Mutant with 250gy gamma rays) on Germination Rate, Final Germination Percentage, Seedling length and Vigor index performed at the Seed Technology Laboratory ...
Read More
This research was carried out to investigate the effect of using seed treatment by Carboxin Thiram, Imidacloprid, polymer, GA3 and Trichoderma (Wild and Mutant with 250gy gamma rays) on Germination Rate, Final Germination Percentage, Seedling length and Vigor index performed at the Seed Technology Laboratory of Sugar Beet Seed Institute(SBSI). GA3 alone or with chemical treatments and Trichoderma in seed coating increased the germination. Seeds coated with 2g Carboxin Thiram, 2g Imidacloprid , 2g polymerand 1000ppm GA3 showed the highest percentage of germination (99%).The result showed that the use of polymer increased the germination percentage, vigor index and seedling length. Furthermore, application of seed treatment did not show any adverse effects on germination traits. On the other hand, the use of wild species of Trichoderma reduced germination traits. Reduced effect of seed coating by Trichoderma moderated with mutant species, but there was a germination reduction when compared to the control treatment.