从EMS诱变的籼稻品种Kasalath突变体库中筛选获得了一个短根毛突变体，命名为ksrh1。该突变体在苗期表现为根毛变短，除此之外其表型与野生型没有显著差异。遗传分析表明，该突变性状受1个隐性单基因控制。将突变体ksrh1与粳稻品种日本晴杂交构建F2定位群体，利用已公布的水稻SSR标记和自行设计的STS标记对突变位点进行基因定位，最终将KSRH1定位在水稻第1染色体长臂上的S3578和S3584之间，物理距离约为67 kb。
A rice mutant with significantly shorter root hairs was isolated from an EMSinduced mutant library of indica Kasalath. The mutant was named as Kasalath short root hair 1 (ksrh1). Except shorter root hairs, there was no significant difference between ksrh1 and its wild type. Genetic analysis showed that the mutant was controlled by a single recessive nuclear gene. To map the gene KSRH1, the mutant ksrh1 and Nipponbare were crossed to generate an F2 population. By using the published SSR markers and some newly designed STS markers, KSRH1 was mapped to a 67 kb region between the STS markers S3578 and S3584 on the long arm of chromosome 1.
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