TITLE:
Physio-Biochemical and Microsatellite Based Profiling of Lowland Rice (Oryza sativa L.) Landraces for Osmotic Stress Tolerance
AUTHORS:
Rajib Roychowdhury, Joydip Karmakar, Joydip Karmakar, Malay Kumar Adak, Narottam Dey
KEYWORDS:
Drought; Genetic Diversity; Salinity; Simple Sequence Repeat; Traditional Rice
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.4 No.12C,
December
23,
2013
ABSTRACT:
Global climate changes accelerate a wide range of abiotic stresses leading to a series of physiological, biochemical and molecular changes that adversely affect the growth and productivity of rice (Oryza sativa L.). In this background, there is limited knowledge and profiling reports of lowland, less popular rice landraces in relation to their osmotic stress tolerance. Laboratory mediated physiological and biochemical screening for a selected set of 20 lowland rice landraces was done in induced drought and salinity stress conditions. Varietal genetic diversity and inter-relatedness were assessed by using osmotic stress tolerance linked forty-five rice microsatellite markers. For representing the allelic diversity of the studied microsatellite loci across the selected genotypes, a microsatellite panel was constructed and PIC values of all used microsatellite markers were calculated. The obtained database can be used for varietal identification, characterization and genetic information in relation to osmotic stress tolerance.