Abstract
A total of 83 paddy rlce varletles and lines were raiscd in the field under natural condition According to MATSUO'S classificaticn (MATSUO 1952) these materlals were classified into three groups hy plant type-plant tyre A 53, plant type B 20, plant type C 10 The lengths of bcth anther and stlgma In each Varrety were measured In 18 spikelots (6 spikelets per panicle, 3 panicles per Variety)at the heading. Significant varietal differences were established for both characters, but correlation coefiicients between them were not significant in all plant types (plant type A: r=0. 210, plant type B: r=0. 214, plant type C: r=0. 441). In plant type A, awnless varieties, most of them recently bred in Japan, possessed anthers and stigmas significantly shorter than those of fully awned ones.
