A Critical Study on the Effect of Seed Priming on the Germination, Seedling Emergence, Yield and Quality of Forage Production in Tall Fescue (Festuca arundinacea Schreb)

In both laboratory and greenhouse conditions, the impact of priming on germination, emergence, yield, and quality of Festuca arundinacea was investigated. Previous priming studies on fescue have only looked at germination and seedling emergence, but the effects of priming treatments on forage quality have yet to be determined. To improve seed germination, a number of priming treatments have been used. Hydropriming and osmopriming are two popular seed priming methods. Hydropriming is the most basic form of hydrating seeds, and it uses the fewest chemicals. Hydropriming (distiller water) and osmopriming in polyethylene glycol 6000(PEG) and KNO3 solution for 1, 3, and 6 days with osmotic potentials of -1.5 and -2.2 MPa were used to treat the seeds. The results of a laboratory germination percentage test showed that osmotic priming with PEG 1.5 for 6 days increased seedling emergence (76.7 percent) compared to the control (p 0.05), while PEG 2.2 MPa for 1 day increased seedling emergence (76.7 percent) in greenhouse conditions (42.5 percent ). Seeds that had been primed had slightly higher fresh weights than seeds that had not been primed. In PEG 1.5 MPa for 6 days, the maximum digestibility percentage of dry matter and crude protein percentage of forage were reported, which showed a significant difference from untreated seeds. The current study found that priming improved germination efficiency, emergence parameters, and quality in both laboratory and greenhouse conditions. The findings indicate that the management theory and decision about priming effectiveness should not be based on absolute laboratory performance measures.

Author (s) Details

Ghasem Ali Dianati Tilaki
Department of Range Management, Faculty of Natural Resources, Tarbiat Modares University, P.O.Box 46414-356, Noor, Iran.

Behzad behtari
Tarbiat Modares University, Iran.

Mohammad Ali Alizadeh
Research Institute of Forests and Rangeland, Iran.

Ali Ashraf Jafari
Research Institute of Forests and Rangeland, Iran.

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