A dwarf wheat mutant is associated with increased drought resistance and altered responses to gravity

文献类型： 外文期刊

第一作者： Zhang, XH

作者： Zhang, XH;Chen, XQ;Wu, ZY;Zhang, XD;Huang, CL;Cao, MQ

作者机构：

关键词： s-Dwarf;wheat;increased drought resistance;gravitropism;relative water loss ratio;transpiration rate;photosynthetic rate

期刊名称：AFRICAN JOURNAL OF BIOTECHNOLOGY （ 影响因子：0.573； 五年影响因子：0.794 ）

ISSN： 1684-5315

年卷期： 2005 年 4 卷 10 期

页码：

收录情况： SCI

摘要： Drought resistance is an important trait for crops. Here we report a new wheat mutant with increased drought resistance and altered gravitropism. During the bombardment transformation of Chinese wheat cultivar 'Jingdong 6', a recessive remarkably dwarf wheat mutant named 's-dwarf' ( super dwarf wheat) was created. It was severely dwarf and gibberellic acid insensitive. The relative water loss ratio of the detached leaf and the transpiration rate of s-dwarf seedlings were remarkably lower than Jingdong 6 while the photosynthetic rate of s-dwarf seedlings was significantly higher than Jingdong 6. Most of the s-dwarf seedlings survived in recovering experiement after water loss. The stalk of s-dwarf seedling also showed reduced gravitropism. This is the first report about a new dwarf wheat mutant associated with increased drought resistance and altered stalk gravitropism.

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