吉林省水稻超高产育种研究 Ⅱ-不同穗类型品种形态生理与产量性状

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

以几个有代表性的不同穗类型品种为主,研究不同穗类型间的形态差异和干物质生产能力。结果表明:①不同的穗类型品种地上和根系干物质生产能力有明显的差异,一般穗重型品种干物质生产能力比穗数型品种要高,地上干物质积累和地下干物质积累呈正相关;②直穗型品种叶绿素含量比一般弯曲型品种高,穗重型品种剑叶中的叶绿素含量比穗数型品种高;③不同穗类型品种超高产育种应当注重提高生物产量,适当提高经济系数。

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 .