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以生产上高产两系杂交稻Y两优1号为对照,分析了特大粒恢复系R257与生产上骨干两系不育系C815S、Y58S、N118S所配制的3个杂交稻新组合C815S/R257、Y58S/R257、N118S/R257的库容、产量特性、叶面积动态变化、干物质积累特性及物质转运水平。结果表明:组合C815S/R257、N118S/R257的库容量极显著高于对照Y两优1号,生育后期的上3叶叶面积、干物质积累量、茎鞘叶物质转运水平均优于对照,最终产量分别比对照增产2.65%和0.79%。对新配组合的源特征、干物质积累及转运特性与产量的关系做了讨论。
The high yielding two - line hybrid rice Y Liangyou 1 was used as control and the combination of extra - large restorer line R257 and C815S / R257, a new combination of C8000, Y58S and N118S, Y58S / R257, N118S / R257 storage capacity, yield characteristics, dynamic changes of leaf area, dry matter accumulation characteristics and material transport levels. The results showed that the storage capacity of the combination C815S / R257 and N118S / R257 was significantly higher than that of the control Y Liangyou No.1. The leaf area, dry matter accumulation, The final yield increased 2.65% and 0.79% respectively over the control. The relationship between source characteristics, dry matter accumulation and translocation characteristics and yield was discussed.