【摘要】 研究了重穗型水稻品种Ⅱ优6078冗余度、库容量、物质积累等指标与产量的关系.结果表明:Ⅱ优6078最佳冗余度比汕优63(对照)降低10.39%,库容量提高11.51%,颖花数提高15.55%;在生育后期,光合产物向穗部运转比汕优63强,群体单位面积生物量提高9.1%,单株物质积累量比汕优63多60%.更多还原

【Abstract】 The relationship between grain yield and redundancy degree(RD),sink potential and dry matter accumulation intensity of the heavy-panicled hybrid rice IIyou6078 was studied.Compared with the control variety Shanyou63,the RD of IIyou6078 decreased by 10.39%,and its sink potential and glumaceous flower number increased by 11.51% and 15.55%,respectively.In the later period of growth,IIyou6078 showed higher ability of transporting photosynthates to the spikes and its biomass production per unit area and dry matter accumulation per plant were 9.1% and 60% higher than those of Shanyou63.更多还原