Analysis of self-compatibility in Eruca sativa Mill *

Thirty-four materials of Eruca sativa Mill. from different regions were tested for self-compatibility by bagging selfing and bud-pollinated selfing. The results indicated that the self-compatibility index (SCI) of E. sativa Mill. ranged from 0.00 to 4.84, and belonged to highly self-incompatible type in cruciferae plants.85% of the tested cultivarswas self-incompatible, with the SCI ranged from0.00–to 0.73. 15% of the tested cultivars were self-compatible, with the SCI ranged from 1.04 –to 4.84. The 34 materials can be divided into 3 types according to SCI: highly self-compatible type (SCI >4.00); self-compatible type (SCI was 1.00-4.00) and self-incompatible type (SCI <1.00. The differences of self-compatibility were also existed among individuals of the same cultivar. Self-incompatible plants in self-compatible cultivars and self-compatible plants in self-incompatible cultivars were found. It is completely possible to breed self-compatible lines from self-incompatible population of E. sativa Mill.