Effect of PEG-8000 imposed drought stress on rice varieties germination
V Violita, Salma Widya Azhari
Abstract
Abstract Drought is the major abiotic stress factor that plays crucial role in reduction in plant production of agrycutural fields in the world. In order to evaluate drought stress on rice varieties germination, total 9 rice varieties were collected from varios place in West Sumatera. PEG-8000 is often used to determine tolerance and susceptible in germination level. Three different concentrations of PEG-8000 0%, 10 %, and 20% were used in the experiment. Germination percentage, shoot lenght, root lenght, root dry weight and shoot dry weight were determined as parameters studied. The result showed that rice varieties germination was significantly reduced with the increased of PEG concentration level in all parameters studied. Base on Drought Sensitively Index (DSI) we can classified the rice varieties as tolerant (Harum and Baroto), moderate (Situbagendit and Randam Kaus) and sensitive one (Keriting, Batang Palo, Kuning rendah, Indragiri, and Rosna putih).