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Echinochloa Polystachya Management In Louisiana Rice, Roy Matthew Griffin
Echinochloa Polystachya Management In Louisiana Rice, Roy Matthew Griffin
LSU Doctoral Dissertations
E. polystachya introduced at stand densities (SD) of 10,000 through 70,000 stolon segments/ha produced 5.4 to 6 stolons/introduced segment; however, 130,000 through 520,000 SD produced 1.4 to 2.1 stolons per introduced segment indicating increased intra- and inter-specific competition. Stolon production was greater than 160,000 plants/ha with 30,000 through 520,000 SD. The 520,000 SD produced a total stolon length of 318 km/ha and no difference was observed for the 260,000 SD. Total node production was 290,000 nodes/ha with an average of 29 nodes/introduced segment in the 10,000 SD and 5.4 to 9.8 nodes/introduced segment with 70,000 or greater SD indicating greater …
Association Genetics For Agronomic Traits In Rice And Cloning Of Als Herbicide Resistant Genes From Coreopsis Tinctoria Nutt, Nengyi Zhang
Association Genetics For Agronomic Traits In Rice And Cloning Of Als Herbicide Resistant Genes From Coreopsis Tinctoria Nutt, Nengyi Zhang
LSU Doctoral Dissertations
We have evaluated the potential of discriminant analysis (DA) to detect candidate markers associated with twelve economically important traits in a large population of unrelated U.S. and Asian inbred lines of rice. Associated marker alleles detected by DA mapped within the same genetic intervals when compared with previous traditional QTL mapping experiments that evaluated progeny derived from various controlled crosses. New markers identified by DA suggest that the procedure can also uncover relevant genetic regions not possible by standard genetic tests. With the same dataset, we also compared different modern regression approaches for selecting molecular markers associated with the twelve …