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http://dx.doi.org/10.5660/KJWS.2010.30.1.025

Seed Germination and Seedling Emergence of Indian jointvetch (Aeschynomene indica L.) in Different Conditions  

Jin, Chang Hao (Department of Agronomy, College of Agriculture and Life Science, Chungnam National University)
Uddin, Md. Romij (Department of Agronomy, College of Agriculture and Life Science, Chungnam National University)
Pyon, Jong-Yeong (Department of Agronomy, College of Agriculture and Life Science, Chungnam National University)
Publication Information
Korean Journal of Weed Science / v.30, no.1, 2010 , pp. 25-33 More about this Journal
Abstract
Several experiments were conducted in growth chambers and a greenhouse to determine the influence of various environmental factors on seed germination and seedling emergence of Indian jointvetch. Fully matured seeds of Indian jointvetch germinated only 42%. The germination percent increased as the storage temperature increased with time. More than 90% seeds germinated when the seeds were kept at $40^{\circ}C$ for seven months, but germination was 58.9 and 55.1% when kept at 25 and $4^{\circ}C$, respectively. Non-dormant seeds of Indian jointvetch germinated 91.1 and 92.4% at 30 and $30/25^{\circ}C$, respectively. Germination percent increased with increasing both prethermal temperature and time. The prethermal temperature of $90^{\circ}C$ for 40 minutes was the best for maximum germination (94.5%). Germination and growth of Indian jointvetch tended to decrease slightly until -0.3 MPa osmotic potential (water stress induction) and then declined drastically and the seeds did not germinate at below -0.5 MPa osmotic potential. Indian jointvetch seems to grow well in moist and flooding conditions since emergence and growth of seedling increased with increasing soil moisture content and the water level.
Keywords
emergence; environmental conditions; germination; Indian jointvetch; seedling growth;
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