【摘要】 为明确辽宁省水稻品种的籽粒充实状况,以最新育成的13个新品系和1个对照品种为试材,根据糙米厚度分级对籽粒充实程度及其与产量性状的关系进行了研究。结果表明:糙米千粒重与糙米厚度的变化趋势相同,可以由籽粒厚度代表充实程度。新育成品系的籽粒充实度分布在77.60%～93.03%之间,品种间差异显著。新品系充实度与平均千粒重呈极显著正偏相关,与其他产量性状相关不显著。充实程度与产量水平不完全一致,高产品种多具有较高的有效穗数、着粒密度、实粒数·m-2和中等的充实度。更多还原

【Abstract】 The grain plumpness and its relationship with grain yield traits of different new rice varieties were studied according to the classification of brown rice thickness.The results showed that 1000-grain weight and thickness of brown rice changed in the same trend.The grain plumpness degree of new rice varieties was between 77.60%and 93.03%,and had significant difference between varieties.The grain plumpness correlated significantly with 1000-grain weight an did not correlated with other yield characters.The grain plumpness was not consistent with yield level.High yield varieties had the features of high effective panicles,high panicle grain density,high filled grain/m2 and moderate grain plumpness.更多还原