Abstract:
Rice is susceptible to submergence from germination to early vegetative stage and affects wetland
paddy cultivation areas of Sri Lanka is affected by flash floods. There are no submergence
tolerant varieties available locally. Therefore, this research was designed to evaluate the
BC1
F1
population (Bg 379-2/ IR 07F102 // Bg 379-2) morphologically for submergence
tolerance and to select polymorphic molecular markers between the donor parents IR07F102
and recurrent parent, Bg 379-2, and to screen and select plants of the BC1
F1
population for
submergence tolerance using identified molecular markers. The 108 individuals of BC1
F1
of
rice were morphologically screened for plant lodging, leaf senescence and plant elongation
and molecular screening was done by using 5 Rice microsatellites and 1 In Del marker. Out of
those, molecular marker, RM464A for SUB1 gene conferring submergence tolerance, was used
to screen the BC1
F1
population. Five plants were selected as submergence tolerant individuals
as they were positive in both morphological and molecular screening.
