A fasciated mutant characterized by broadened stem, small narrow leaves and pods reduced in size, arranged In line on the node of the upper part of the stem was identified in M3 generation in grasspea (Lathyrus sativus L.) cv. P27 following 250 Gy gamma rays treatment. The flattened stem of the shoot apex appeared like a cluster of closely fused branches. The mutant was fertile and had less number of primary and secondary branches, reduced pod and seed size, low yield and delayed maturity as compared to parental cultlvar. Bc1 and F2 segregation showed that fasciation was controlled by a single recessive gene. Distinctive features of fasciation have been described. This is a first report of induced fasciated mutant in Lathyrus sativus L.
Grasspea, induced mutations, fasciation, inheritance
