Determination of Parental Lines for Biparental Crossing in Rice using Genomic Prediction
碩士 === 國立臺灣大學 === 農藝學研究所 === 107 === The determination of parental lines is the first and most important step to a successful bi-parental crossing plant breeding program. A set of superior parental lines can lead to high performing recombinant inbred lines (RILs). In this study, we propose to select...
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| Format: | Others |
| Language: | en_US |
| Published: |
2019
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| Online Access: | http://ndltd.ncl.edu.tw/handle/cq8dmv |
| Summary: | 碩士 === 國立臺灣大學 === 農藝學研究所 === 107 === The determination of parental lines is the first and most important step to a successful bi-parental crossing plant breeding program. A set of superior parental lines can lead to high performing recombinant inbred lines (RILs). In this study, we propose to select parental lines of rice based on genomic prediction (GP). The GP is applied to predict genomic estimated breeding values (GEBVs) for all the candidate parental lines and the RILs after several generations of self-pollinating. Some strategies of selecting the parental lines are investigated through simulation studies based on a high-quality rice genome dataset. It is shown that the best strategy in general takes both the GEBVs and the genomic diversity of parental lines into account. In this study, we present a set of parental lines for each of 21 quantitative traits. We also investigate the best selection strategy for 6 different combinations of two target traits. Our proposed systematic analysis procedure can be applicable to other self-pollinated crops, and it is readily extended to the more complex multi-trait situations with three or more target traits. Some R functions are provided for users to exercise the analysis procedure.
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