Overcoming Seed Coat Dormancy of Caesalpinia Benthamianus
- Author O.A.Obembe
- Co-Author O.J.Ajibola.
- DOI
- Country : Nigeria
- Subject : PLANT SCIENCE AND BIOTECHNOLOGY
Keywords : Caesalpinia benthamianus,Seed Pre-treatments,Seedling Emergence Percentage,Mean Emergence Time
Abstract
Caesalpinia benthamianus(Baill.,)Herendeen and Zarucchi Synonym Mezoneuron benthamiana Baill.,commonly known as Tiger Claw plant is a shrub belonging to the natural Order Fabales,Family Fabaceae(Leguminosae)and Sub-Family Caesalpinoideae.Economically important for traditional medicine purposes,useful as chewing stick and as a boundary fence against grazing animals because of its thorny nature.Caesalpinia benthamianus exhibits seed coat dormancy.Seeds were sown in white plastic buckets filled with loose and well drained river sand at 2 x 2 cm spacing and at sowing depth of 3 cm.Bucket diameter was 22 cm and bucket depth from base to the bream was 24 cm.4 replications of 100 randomly picked seeds at 25 seeds per bucket was used for each treatment. Buckets were laid out in complete randomized design. Viable seeds determined by floatation method were subjected to pre-treatments using control, 98% Concentrated Sulphuric acid and physical abrasion for 4 minutes. Results shows that Physical scarification with 78% Seedling emergence and lowest Mean Emergence Time of 10 days was most efficient.Acid scarification gave 40% and Mean Emergence Time of 19 days.Control experiment gave 36% and Mean Emergence Time of 18 days.Thus 4 minutes Physical scarification treatment is highly recommended for the propagation of Caesalpinia benthamianus seeds.
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