1. 1964年,袁先生偶然发现了一株天然杂交水稻。
In 1964, Yuan found a natural hybrid rice plant by accident.

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2. 1961年,袁隆平发现了一种天然杂交水稻,这种水稻相较于其他杂交水稻有许多优点。
In 1961, Yuan Longping found a natural hybrid rice plant that had many advantages over others.

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3. 但现有的低酚棉品种,基本利用的都是隐性无腺体基因,隐性低酚陆地棉在生产上容易发生天然杂交,带来生物混杂,食用不安全。
Most glandless varieties, which are easy to produce hybridization naturally in the field, and cause unsafe to eat, are due to recessive glandless genes.

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4. 生物入侵是一个适应性进化的过程,天然杂交与遗传渐渗可以改变外来物种对环境的适应性并提高其入侵能力,使其进化成为入侵种。
Biological invasion is a process of adaptive evolution in which hybridization and introgression play an important role in promoting invasive species by changing their invasiveness.

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5. 生物入侵是一个适应性进化的过程,天然杂交与遗传渐渗可以改变外来物种对环境的适应性并提高其入侵能力,使其进化成为入侵种。
Biological invasion is a process of adaptive evolution in which hybridization and introgression play an important role in promoting invasive species by changing their invasiveness.

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