Most of the local lentil varieties grown in Yemen are early maturing, small seeded, low yielding and susceptible for wilt. Therefore the aim of the study was to induce desirable mutants under rainfed conditions. Local lentil variety Balasan (D2001) was used in this study and its dry seeds were subjected to different doses of gamma rays(100,150,200,250) Gy and planted to obtain M1 generation in 2002 summer season. Thirty three Individual plants were selected from M2 populations based on plant type, increased number of branches, number of pods and number of seeds/plant. The selected mutants were primary evaluated and the promising lines were selected. The mutants were evaluated in yield trail (M5) in summer season of 2005 at Northern Highlands Research Station belong to Agricultural Research &Extension Authority . These six mutants along with the cultivates farmers varieties were put into a yield trail in summer season of 2006 at three different environmental; locations ( Kohlan Affar,Koukaban,and Bani-Matter) as M6.Obtained results indicated that the most of mutants strains showed earliness. Whereas the mutant line M-25 that gave the highest number of branches, number of pods and number of seeds/plant than the local check. Results also revealed that the mutant strains ML-25 and ML-19 produced higher seed yield/area with percentage of 106.24,91.46% respectively over local check.
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