Mapping QTLs controlling chlorophyll content seedling and reproductive stages under salinity stress in rice (Oryza sativa L.)

Rice is one of the important crops in world that providing half of the feed for world population. Increasing world population and food security will necessitate rice cultivation in unarable regions. Higher level of salinity than threshold criteria for rice growth will necessitate need to tolerant plant and research in this field. Chlorophyll content is one of the important traits related to salt tolerance. In order to, mapping of QTLs related to chlorophyll content under saline condition was used from F2:3 mapping population at seedling and reproductive stages. This mapping population was provided from Tarommahalli (tolerant) and Khazar (susceptible) crosses. Linkage map with aid to 74 markers were covered 1231.50 cent Morgan all of the rice genome. One QTL detected for the chlorophyll content under saline condition based on composite interval mapping, in RM1022-RM6283 interval on chromosome 3. This QTL (qCLS-3) explained 14.40% of the total chlorophyll content variation. Result of this experiment can use for selection of best genotype based on marker assistant selection programs.