TITLE:
Crude Extracts of Senna alata (L.) Roxb. Mimics Plant Growth Hormones in Promotion of Vegetative and Reproductive Growth in Celosia argentea L.
AUTHORS:
Ikechukwu O. Agbagwa
KEYWORDS:
Celosia argentea, Hormones, Plant Extract, Senna alata, Vegetable
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.13,
June
18,
2014
ABSTRACT: The efficacy of crude
extracts of Senna alata in the
improvement of vegetative and reproductive growth in Celosia aregentea was investigated. Fresh leaves of S. alata were
blended with a homogenizer in 1 litre of distilled water. The resultant green
paste was filtered under suction. Different concentrations (75%, 50%, 40%, 30%,
25%, 12%, 10%, and 5%) were prepared from the 100% crude extract. Seeds of C. argentea were presoaked in these
different concentrations including a control (0%) and planted out after 24
hours. Results obtained showed that seedling height, leaf area, dry weight and
leaf area ratio were promoted and enhanced by presoaking seeds in the extract.
At the end of the experimental period (six weeks), seedling height in 75% and
100% treatments were 109 ± 16.12 cm and 117 ± 19.32 cm, leaf area 128 ± 17.91
cm2 and 125 ± 18.12 cm2, dry weight 7.48 kg and 7.0 kg
respectively. Seedlings raised from seeds presoaked in water (control) however,
flowered earlier (8 weeks) than the treatments (10 weeks in 75% and 100%). Presoaking
seeds of C. argentea in crude
extracts of S. alata before planting
is recommended for optimum production of the leafy vegetable. The procedure is
cheap and easily implementable by resource-poor farmers who are the main
growers of C. argentea.