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Hybrid fitness and the potential for gene flow between cultivated rice, Oryza sativa and its wild relative, Oryza rufipogon.

机译：杂交水稻和水稻栽培品种及其野生近缘种红景天之间的杂交适应性和基因流动的潜力。

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摘要

Gene flow resulting from hybridization between domesticated plants and their wild relatives can be either beneficial or may have harmful effects depending on the types of genes transferred. This dissertation project contributes to a broader study which seeks to evaluate the level of gene flow between cultivated rice (Oryza sativa) and its wild relatives, and to determine the potential impact of any gene flow. The specific aim of this dissertation research project is to assess the fitness effects of possible gene flow and hybridization between transgenic rice and native populations of wild rice (Oryza rufipogon). The use of GM plants has increased dramatically world wide. The crops are modified not only for yield enhancing features such as resistance to drought, pests etc., but also for novel compounds such as vitamins, vaccines, etc. GM cultivated rice crops may potentially be planted in locations with wild rice present, so this is an important issue. The results of the dissertation study show that the hybrids formed between GM cultivated rice and wild rice are viable and fertile. The fitness of hybrids is not significantly lower than the parental plants. There is the possibility of gene flow between cultivated rice and wild rice via hybrids wherever cultivated rice and wild rice grow together.
机译：驯化植物及其野生近缘种之间杂交产生的基因流可能是有益的，也可能有有害影响，具体取决于转移的基因类型。本研究项目为更广泛的研究做出了贡献，该研究旨在评估栽培稻（Oryza sativa）与其野生近缘种之间的基因流水平，并确定任何基因流的潜在影响。本论文研究项目的具体目的是评估转基因水稻与野生稻（Oryza rufipogon）原生种群之间可能的基因流和杂交的适应性效应。全球范围内，转基因植物的使用急剧增加。对农作物进行了改良，不仅具有提高产量的功能，例如抗旱，抗害虫等，而且还改良了维生素，疫苗等新型化合物。转基因栽培的水稻作物有可能种植在存在野生稻的地方，因此是一个重要的问题。论文的研究结果表明，转基因栽培稻与野生稻杂交后代是可行且肥沃的。杂种的适应性并不显着低于亲本植物。栽培稻和野生稻一起生长的地方，栽培稻和野生稻之间可能存在通过杂种的基因流动。

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