以下为句子列表：
英文: Abstract: The main characters and seed set of BC1，BC2，BC1F2 from MS line back-crossing with the pollen of hybrid rice were studied.The appearance of a large number of self fertile plants in MS line was analyzed.The effect of introgression of restoring gen
中文: 文摘:研究了杂交稻花粉对母本不育系回交后代群体BC1、BC2、BC1F2的主要农艺性状和育性表现，分析了不育系中出现大量自交结实株的原因，讨论了恢复基因渗入对籼、粳不育系纯度和杂交稻产量的影响，指出“同质恢”对降低不育系纯度的严重性和杂交稻作制种田隔离区的不合理性。
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英文: Introgression (introgressive hybridization) The introduction of genetic material from one gene pool to another by hybridization and subsequent back-crossing to one or other of the parents.
中文: 渐渗现象（渐渗杂交）：是通过杂交或其后代与某个亲本回交，遗传物质从一个基因库被引入另一个基因库的现象。
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英文: Preliminary report on quantitative trait loci mapping of false smut resistance using near-isogenic introgression lines in rice;
中文: 近等基因导入系定位水稻抗稻曲病数量性状位点的研究初报
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