在水稻广亲和系02428群体中选出一个变异株“02428选”,它具有花时早而集中,花粉量大的特点;抽穗期比02428迟8～9天,植株高5厘米左右;叶片较宽,穗型较大,粒型较小,稃尖有明显的紫色标记。测交鉴定结果表明,“02428选”不仅保留了02428与籼、粳稻的广泛亲和性,而且与籼、粳稻杂交的F_1具有明显的杂种优势。在籼粳亚种间杂种优势利用中,它具有潜在的育种价值。 In the wide-compatibility rice line 02428, a mutant strain “02428” was selected, which had the characteristics of early and concentrated flowering and large amount of pollen; heading stage was 8-9 days later than 02428 and the height of plant was about 5 cm; Wider, panicles larger, smaller particle size, tip sharp purple marked. The results of cross test showed that “02428” not only retained the broad compatibility of 02428 with indica and japonica, but also had obvious hybrid vigor with F1 hybrids with indica and japonica. It has potential breeding value in the heterosis utilization of indica and japonica subspecies.