Indian Journal of Agricultural Research

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Research Article

Indian Journal of Agricultural Research, volume 50 issue 3 (june 2016) : 268-272

Seed germination and seedling growth of rice varieties as affected by flooding stress

M. Prakash*, B. Sunilkumar, G. Sathiya Narayanan, J. Gokulakrishnan, R. Anandan
1<p>Department of Genetics and Plant Breeding, Faculty of Agriculture,&nbsp;Annamalai-608 002, Annamalai University, India.</p>
Cite article:- Prakash* M., Sunilkumar B., Narayanan Sathiya G., Gokulakrishnan J., Anandan R. (2016). Seed germination and seedling growth of rice varietiesas affected by flooding stress . Indian Journal of Agricultural Research. 50(3): 268-272. doi: 10.18805/ijare.v50i3.10748.

ABSTRACT

Submergence tolerance is an important character to be considered when flash flood damages rice. Tolerant genotypes can withstand submergence for 1–2 weeks based on their tolerance level. Hence with a view to study the effect of submergence on germination and seedling attributes, eight cultivated varieties were subjected to submergence tolerance at five levels of flooding viz., 1 cm, 2 cm, 3 cm, 4 cm and 5 cm flooding levels. CR 1009 sub 1, a submergence tolerant variety was used as check. With increase in submergence levels, greater reduction was observed for all the parameters. Survival % and seedling length were found to be decreased under flooded conditions, but to a much lower extent in the tolerant genotype. Flooding decreased shoot, root and total dry matter production in all the varieties with more reduction in higher flooding (5 cm) rather than lower flooding (1cm) levels.

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