African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Comparative efficacy of brown, red and green seaweed extracts on low vigour sunflower (Helianthus annus L.) var. TN (SUF) 7 seeds

K. Sujatha
  • K. Sujatha
  • Department of Seed Science and Technology, Agricultural College and Research Institute, Madurai, Tamil Nadu, India.
  • Google Scholar
V. Vijayalakshmai
  • V. Vijayalakshmai
  • Department of Seed Science and Technology, Agricultural College and Research Institute, Madurai, Tamil Nadu, India.
  • Google Scholar
A. Suganthi
  • A. Suganthi
  • Department of Seed Science and Technology, Agricultural College and Research Institute, Madurai, Tamil Nadu, India.
  • Google Scholar


  •  Received: 19 September 2013
  •  Accepted: 26 April 2015
  •  Published: 14 May 2015

Abstract

Extracts of the brown seaweeds (Sargassum myricocystum) red seaweed (Gracilaria edulis) and green seaweed (Caulerpa racemosa) have been used as a biostimulant to promote seedling emergence and vigour. The two different concentrations (1 and 5%) and soaking durations of (1:1 seed t solution ratio) were used. Results of the present study suggest that the sunflower seed soaked in 5% C. racemosa seaweed extract for 8 h performed significantly in all estimated characters (72% Germination; 15.95 cm Shoot length; 13.60 cm Root length; 0.399 OD Dehydrogenase activity; 0.277 dSm-1 electrical conductivity and lowest abnormal seedlings production 3%) can be recommended as a mid storage seed treatment for improving the vigour and viability of aged seeds.

 

Key words: Seaweed extracts, sunflower seeds and vigour.