Zea mays subsp. mays Raw sequence reads

A TROPICAL Synthetic (TROPICS) maize population was developed to explore genomic responses to selection for flowering time. The inbred lines used as parents of TROPICS were chosen based on multiple publications (Nelson 2009 Ch. 4 and 5; Nelson et al. 2006; Nelson and Goodman 2008) in which tropical and semi-tropical lines were evaluated for grain yield in testcrosses with U.S.-temperate adapted lines. Among the aforementioned studies, CML10, CML258, CML277, CML341, CML373, Tzi8, and Tzi9 were top candidates as exotic germplasm for U.S. maize improvement; thus, the potential for these lines to contribute unique variation in the context of temperate maize improvement was the basis of selecting them. This population was used in a parallel selection experiment at multiple locations spanning a latitudinal gradient across the United States.References:Nelson, P. T., Jines, M., & Goodman, M. (2006). Selecting among available, elite tropical maize inbreds for use in long-term temperate breeding. Maydica, 51(2), 255.Nelson, P. T., & Goodman, M. M. (2008). Evaluation of Elite Exotic Maize Inbreds for Use in Temperate Breeding. Crop Science, 48(1), 85. doi:10.2135/cropsci2007.05.0287Nelson, P. (2009) Evaluation of Elite Exotic Maize Inbreds for Use in Long-Term Temperate Breeding. M.S. Thesis. North Carolina State University, Raleigh, NC.

为探究对开花时间选择的基因组响应，构建了一群热带合成（TROPICS）玉米种群。TROPICS种群的父母自交系的选择基于多份出版物（Nelson 2009，第4章和第5章；Nelson et al. 2006；Nelson and Goodman 2008），在这些出版物中，热带和亚热带品种在与美国温带适应性品种的测交试验中进行了产量评估。在上述研究中，CML10、CML258、CML277、CML341、CML373、Tzi8和Tzi9作为外源种质资源成为美国玉米改良的顶级候选者；因此，这些品系在温带玉米改良背景下贡献独特变异的潜力构成了选择它们的基础。该种群被用于在美国多个地点的平行选择实验中，这些地点跨越了美国纬度梯度。参考文献：Nelson, P. T., Jines, M., & Goodman, M. (2006). Selecting among available, elite tropical maize inbreds for use in long-term temperate breeding. Maydica, 51(2), 255. Nelson, P. T., & Goodman, M. M. (2008). Evaluation of Elite Exotic Maize Inbreds for Use in Temperate Breeding. Crop Science, 48(1), 85. doi:10.2135/cropsci2007.05.0287 Nelson, P. (2009) Evaluation of Elite Exotic Maize Inbreds for Use in Long-Term Temperate Breeding. M.S. Thesis. North Carolina State University, Raleigh, NC.