水稻籼粳交育种后代产量结构分析与探讨

Analysis and Discussion about Yield Component on Offsprings from Indica and Japonica Hybridization

以水稻籼粳交后代产量较高稳定品系为试材,研究2010～2011两年上述材料产量性状及构成因素,探讨籼粳交育种后代产量因素特点。结果表明,株高方面:高产品系达到110 cm左右;产量结构方面:穗数、穗粒数、千粒重方面分别达到每穴12穗、成粒140粒、26 g,其产量将达到550～650 kg/667 m2;与粳粳交育种高产稳定材料相比:籼粳交后代高产材料株高增高,分蘖减少,穗粒数增加;其产量优势主要体现于穗粒数及千粒重方面。

Offsprings from Indica and Japonica hybridization with higher yield and steady lines was used to study the yield performance and yield components from 21310 to 2011. the result indicated from the following aspects： plant height： high yield Lines can achieve 110 cm; Yield component： when the panicles, grain numbers and 1 000-grain weight achieve 12, 140 and 26 g, the yield was 550-650 kg/667 m2. Compared with stabilizing lines from Japonica-Japonica hybridization, offsprings from Indica and Japonica hybridization had higher plant height and grain numbers, lesser tillering, and its yield advantages mainly embodied by grain numbers and 1 000-grain weight.