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水稻高秆突变体株高及其构成的比较和等位性分析 被引量:8
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作者 朱旭东 陈红旗 闵绍楷 《作物学报》 CAS CSCD 北大核心 2003年第4期591-594,共4页
利用伽玛射线辐射诱变获得了 2份高秆突变体Gh 2和Sh 3,对它们的株高及其各节间长、穗长等的变化进行了分析。以同样是高秆的突变体Mh 1做测验种与Gh 2和Sh 3进行杂交 ,研究了相互间的等位性 ,研究结果认为它们是互为等位的遗传关系 ,... 利用伽玛射线辐射诱变获得了 2份高秆突变体Gh 2和Sh 3,对它们的株高及其各节间长、穗长等的变化进行了分析。以同样是高秆的突变体Mh 1做测验种与Gh 2和Sh 3进行杂交 ,研究了相互间的等位性 ,研究结果认为它们是互为等位的遗传关系 ,即含有对sd 1能起隐性调节作用的i sd1(t)基因。 展开更多
关键词 水稻 高秆突变体 株高 构成比较 等位性分析 伽玛射线 辐射诱变 隐性调节
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Research on the Relationship of Grammar and English Learning
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作者 Li Ziyao 《International Journal of Technology Management》 2015年第7期4-6,共3页
The grammar is an important part of English learning, but grammar learning has been a controversial topic in English learning profession, gone the process from worship to abandonment and then to a rational understandi... The grammar is an important part of English learning, but grammar learning has been a controversial topic in English learning profession, gone the process from worship to abandonment and then to a rational understanding. Firstly, this paper makes a brief introduction of the process, then introduces and discusses the significance, including sentence production, function of adjustment, fossilization solution, focusing on grammar phenomenon and grasping the components of language. Then, this paper presents two types of grammar, namely, tacit knowledge and explicit knowledge. Last, four approaches to obtain grammar ability are proposed. 展开更多
关键词 Grammar significance Grammar type APPROACHES English learning.
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