The Study of Super Rice Breeding in Jilin II-The Yield Character and Morphological Physiology of Different Panicle Type Variety

The dry material productive ability and morphological difference of different panicle type was studied .The result showed that:1 There was difference of dry material productivity of aerial part and root among the different panicle type varieties .Generally ,the dry material productive ability of heavy panicle type is higher than that of multi_panicle type .It has positive correlation between accumulation of dry material of aerial part and that of root.2 The chlorophyll content of erect panicle type is higher than that of non_erect,the content of chlorophyll in the flag leaf of heavy panicle type is higher than that of multi_panicle type .3 Super yield breeding should emphasize on increasing biological yield and economic rate .