辽宁省粳型超级稻品种产量与源库特性研究

研究了盐丰47和辽星1号2个超级粳稻品种的产量、产量结构、物质生产及源库特性等。结果表明,2个超级稻品种的产量都显著高于对照,盐丰47的有效穗数最高,产量水平最高,辽星1号的每穗粒数最高,各品种成粒率和千粒重差异不显著。超级稻品种出穗后物质生产能力和茎鞘物质向子粒的转运率都高于对照品种,超级稻品种单位面积颖花量和灌浆期叶源量、比叶重、光合势都高于对照,源库比与对照无显著差异。

Studies on Yield and Source-sink Characteristics of Japonica Super Rice Varieties in Liaoning Province

‘Yanfeng 47'and‘Liaoxing 1',two super rice varieties planted in the field,were taken as the materials in the study.Their yield,yield components,dry matter production and source-sink characteristics were investigated and analyzed.Results showed that yield of the two super rice varieties setting rate and kilo-grain weight among varieties.Dry matter production capability and transport rate of matter from sheath to grain after heading of super rice varieties were higher than the control variety.Glumes in unit area,leaf area,leaf weight in unit area and photosynthesis potential in grain-filling stage of super rice varieties were higher,but there was no obvious difference in ratio of source to sink among varieties.