“小偃54"优质小麦在豫南地区示范推广的抗逆性研究

Resistance of high quality wheat variety ‘Xiaoyan 54’to environmental stress and diseases in south of Henan Province

摘要: 豫南淮河北岸试验与示范推广的优质小麦“小偃54”品种在病虫害、霜害及严重旱、涝灾后仍表现出良好的抗逆性和较高产量，4年大田调查研究其生理特性如根系特性、功能叶特性、营养吸收利用效率等方面抗逆生理结果表明，该品种根系发达，旗叶上挺，通风透光强，并具有较强抗倒伏能力，这可能是“小偃54”在逆境胁迫下仍能获得较高产量的生理基础。

Abstract: ‘Xiaoyan 54’was introduced into the south of Henan Province in 1997，and now is grown widely in this area．Investigation on four-year cultivation indicates that‘Xiaoyan 54’has high resistance to freezing，drought，waterlogging stress，and diseases and has high grain yield．We have studied the root morphology，characters of functional leaves and nutrient using efficiencies of‘Xiaoyan 54’．The results suggest that the high resistance of‘Xiaoyan 54’to environmental stresses relates with its powerful root system ，erect flag leaf，and the resistance to lodge．