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以杂交稻骨干恢复系明恢63、蜀恢527为对照,系统分析了水稻特大穗恢复系R1126的冠层叶片、干物质积累变化和产量特性。结果表明,R1126冠层叶面积大,比叶重大,净光合速率高,抗早衰能力强,具有较强的光合生产能力。R1126穗大粒多,每穗总粒数321粒,结实率87%,千粒重26 g,但分蘖力弱,有效穗少,单株穗数只有4.8个。对R1126的应用策略进行了探讨。
The restorer lines of hybrid rice Minghui63 and Shuhui527 were used as control, and the canopy leaf shape, dry matter accumulation and yield characteristics of R1126, an extra-panicle restorer line of rice, were systematically analyzed. The results showed that the canopy leaf area of R1126 was larger than that of the leaf, the net photosynthetic rate was high, the ability of anti-premature decline was strong and the photosynthetic production capacity was strong. R1126 spike large grains, the total number of 321 grains per spike, seed setting rate of 87%, 1000 grain weight 26 g, but poor tillering, effective panicles, spike per plant only 4.8. The application strategy of R1126 is discussed.