TITLE:
Methods for Breaking Dormancy of Seeds of Tropical Forage Legumes
AUTHORS:
Leonardo F. de Morais, João C. C. Almeida, Bruno B. Deminicis, Fábio T. de Pádua, Mirton J. F. Morenz, João B. R. de Abreu, Raphael P. Araujo, Delci D. de Nepomuceno
KEYWORDS:
Fabaceae, Seed, Dormancy and Germination
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.13,
June
5,
2014
ABSTRACT:
The aim of this study was
to evaluate methods for breaking dormancy of seeds Neonotonia wightii (perennial soybean), Macrotiloma axilare (archer), Pueraria
phaseoloides (tropical kudzu), Calopogonium
mucunoides (calopo), which were subjected to the following treatments for
physical breaks and physiological dormancy: 1) control; 2) scarification with
sandpaper; 3) immersion in H2SO4 98% for five minutes and
subsequent washing in water; 4) preheating at 60°C for 150 minutes in an air
circulating oven; 5) 0.2% KNO3; and 6) gibberellic acid (GA3 0.5%). The results showed that using H2SO4 to break seed
dormancy archer and perennial soybean and calopo scarification with sandpaper
were the most recommended treatments. Tropical Kudzu presented physiological
response to treatments with the use of gibberellic acid and physical treatment
using immersion H2SO4. Thus, it is necessary to use
techniques to make the breaking dormancy of seeds of legumes, resulting in an
increase in the rate of seed germination and rapid deployment of the legume.