More than 400 rice conventional varieties were aged in a small phytotron, and 38 rice varieties were screened for morphological index.

在小型人工气候箱中，对4 0 0余份常规品种进行人工老化处理，并结合随机抽取的38份材料进行了籼粳形态指数分析。

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The variety Xieyou 9308 was easy to be injured by low temperature than conventional varieties and not suitable to be sowed as late rice.

协优9308在孕穗期和抽穗期比常规品种更易遭受低温冷害，不适宜作为双季稻的晚稻种植。

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At the same time, Chinese cotton farmers cultivating Bt strains reported fewer instances of pesticide poisoning than those growing conventional varieties.

同时，中国种植抗虫棉的棉农报告称，杀虫剂毒害事件少于常规品种种植。

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Anti-GMO campaigners cite a 1999 study concluding that modified fish that grow extra large would have a competitive advantage, threatening extinction of conventional varieties.

FORBES: White House Reverses Itself, Lifts Political Block on FDA Approval of GM Salmon