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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 48, Number 4 (1997) → Effects of Distillery Wash Derivatives and Stratification on Germination of Italian Alder and Douglas-fir Seeds

Effects of Distillery Wash Derivatives and Stratification on Germination of Italian Alder and Douglas-fir Seeds

The effects of distillery wash derivatives (DWD) and stratification on germination were studied for 2 species with different seed structure and dormancy: Italian alder (Alnus cordata Loisel) and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). Seeds were subjected to 2 pretreatments before germination tests: (1) prechilling at 4 °C (39 °F) for 21 days or (2) no prechilling. Subsequently, germination tests were conducted in water (control) or DWD solutions (10 and 30 ppm). The use of DWD solutions (10 and 30 ppm ) for imbibition during germination test did not affect germination in Douglas-fir but did increase the speed and early germination percentage (third day) in Italian alder. Tree Planters' Notes 48(3/4): 55-59; 1997.


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Author(s): Giovanni Di Monte, Beti Piotto, Elvira Rea, Fernando Pierandrei, Luigi Mezzalana

Publication: Tree Planters' Notes - Volume 48, Number 4 (1997)

Volume: 48

Number: 4