'阳光玫瑰'葡萄9种缺素症的观察与分析OA北大核心CSTPCD

[Objectives]The study aimed to observe the apparent differences of visual symptoms of 9 kinds of nutrient deficiencies in'Shine Muscat'and study the growth indexes such as plant height and the physiological indexes such as chlorophyll content,so as to provide reference for early nutrition diagnosis and fertilization guidance in the field.[Methods]The cutting seedlings of 1-year-old'Shine Muscat'as materials were cultured in perlite pot in greenhouse with modified Hoagland nutrient solution(CK)and nutrient deficiency solution(-N,-P,-K,-Ca,-Mg,-Fe,-B,-Zn,-Cu).The apparent visual symptoms of plants growth and physiological index under different treatment conditions were analyzed.[Results]When P,Mg and Zn were absent,'Shine Muscat'developed symptoms earlier.In the absence of B,Cu and Mg,the growth of plant height was obviously slow,the symptoms were severe and the mortality was high.Compared with stress control,the number of leaves of'Shine Muscat'significantly decreased when Ca and B were deficient.Deficiency stress significantly reduced the chlorophyll content of'Shine Muscat'leaves,but had little effect on leaf water content.The resistance of grapes to nutrient deficiency was positively correlated with MDA content and SOD activity,indicating that the higher the content and activity,the stronger the resistance.[Conclusions]'Shine Muscat'grape was sensitive to the deficiency of B and Mg elements but had a stronger tolerance to Zn element.