江苏省杂交粳稻与常规粳稻主要性状比较

Comparison of Major Charactess between Hybrid Japonica Rice and Conventional Japonica Rice from Jiangsu Province

根据2004-2005年江苏省杂交粳稻和常规粳稻区域试验结果,比较了它们的主要农艺性状和品质性状。结果表明,与常规粳稻相比,杂粳组合主要农艺性状表现为在产量和穗粒结构上优势明显,穗大粒多,增产优势明显,但存在结实率偏低的问题;主要品质性状表现为整体水平低于常规品种,但杂交粳稻籽粒较长、较宽,具有一定的粒型优势。根据分析结果,对江苏省杂交粳稻发展中存在的问题和发展方向进行了探讨。

The hybrid japonica rice and conventional japonica rice in the regional trials of Jiangsu province from 2004 to 2005 were chosen to compare their major agronomic and quality characters. The results showed that hybrid japonica rice had a marked yield advantage to conventional japonica rice. Compared with the conventional japonica rice, the hybrid japonica rice had higher plants, bigger panicles with more spikelets and heavier graias, but it had lower seed setting percentage. The main quality characters of hybrid japonica rice were lower than those of conventional japonica rice, but the seed of hybrid japonica rice was longer and wider with better rice kernel ratio. According to the analysis results, problems and developmental directions of hybrid japonica rice in Jiangsu province were discussed in the paper.