A dwarf wheat mutant is associated with increased drought resistance and altered responses to gravity
文献类型: 外文期刊
作者: Zhang, XH 1 ; Chen, XQ 1 ; Wu, ZY 1 ; Zhang, XD 1 ; Huang, CL 1 ; Cao, MQ 1 ;
作者机构: 1.Beijing Agr Biotechnol Res Ctr, Beijing 100089, Peoples R China
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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