Genetic analysis and gene mapping of a dominant presenescing leaf gene <Emphasis Type="Italic">PSL3</Emphasis> in rice (<Emphasis Type="Italic">Oryza sativa</Emphasis> L.)

Leaf senescence as an active process is essential for plant survival and reproduction. However, premature senility is harmful to agricultural production. In this study, a rice mutant, named as psl3 (presescing leaf 3) isolated from EMS-treated Jinhui 10, displays obvious premature senility features both in morphological and physiological level. Genetic analysis showed that mutant trait was controlled by a single dominant gene (PSL3), which was located on rice chromosome 7 between SSR marker c7sr1 and InDel marker ID10 with an interval of 53.5 kb. The result may be useful for the isolation of the PSL3 gene.