Lan Tao, Liang Kang-Jing, Chen Zhi-Wei, Duan Yuan-Lin, Wang Jun-Lan, Ye Ning, Wu Wei-Ren
Crop Science College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Yi Chuan. 2007 Sep;29(9):1121-5. doi: 10.1360/yc-007-1121.
We found that the seedlings of indica rice cultivar Dular showed chlorosis but the seedlings of japonica rice cultivar Lemont remained green under natural low temperature in early spring. Using an F2 population of Lemont Dular, we found that the difference of cold tolerance at seedling stage between Dular and Lemont is controlled by a single major gene, with the chlorosis allele being recessive. We named the gene cisc(t). With the help of SSR markers, cisc(t) was mapped in a 5.5 cM interval between SSR markers RM257 and RM242 on chromosome 9.
我们发现，籼稻品种杜拉（Dular）的幼苗在早春自然低温条件下出现黄化现象，而粳稻品种莱蒙特（Lemont）的幼苗仍保持绿色。利用莱蒙特×杜拉的F2群体，我们发现杜拉和莱蒙特在苗期的耐寒性差异受一个单主基因控制，黄化等位基因为隐性。我们将该基因命名为cisc(t)。借助SSR标记，cisc(t)被定位在第9染色体上SSR标记RM257和RM242之间5.5 cM的区间内。
