Abstract
Presowing seed treatment methods to overcome dormancy in seeds of Vachellia rehmanniana Schinz
Highlights
The Vachellia, formerly known as Acacia (Kyalangalilwa et al, 2013) is a genus of shrubs and trees that belong to the subfamily Mimosoideae of the family Fabaceae (Palgreaves, 1983)
The results indicated that seed germination percentage, germination mean time and germination index were significantly (F(9, 30) = 51.4, P < 0.01) affected by pre-sowing treatment methods (Table 1)
Present results show that mechanical scarification significantly (P < 0.01) improved germination compared with the control. These results demonstrated the effectiveness of mechanical scarification in overcoming physical dormancy, which is imposed by a hard seed coat that prevent the seed from taking up water, the first critical step in germination (Teketay, 2005; Chisha-Kasumu et al, 2007)
Summary
The Vachellia, formerly known as Acacia (Kyalangalilwa et al, 2013) is a genus of shrubs and trees that belong to the subfamily Mimosoideae of the family Fabaceae (Palgreaves, 1983). Vachellia rehmanniana Schinz, commonly known as silky thorn (Timberlake, 1980; Palgrave, 1983), is a small thorny tree or shrub that grows to 5 m high (Timberlake, 1980), occasionally reaching 10 m (Timberlake, 1980; Palgrave, 1983) It is deciduous with a flat spreading crown (Palmer and Pitman, 1972; Timberlake, 1980). The leaves, young shoots, flowers and pods are eaten by both livestock and wildlife (Tsumele et al, 2007)
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