Comparison of Photosynthetic Characteristics and Production Performance of Different Varieties of Eucommia ulmoides in Xinjiang
In order to comprehensively analyze the photosynthetic characteristics and production performance of four varieties of Eucommia,the experiment was carried out in Shawan City of Tacheng area.The chlorophyll concentration,net photosynthetic rate(Pn),transpiration rate(Tr),stomatal conductance(Gs),intercellular CO2 concentration(Ci),leaf number and leaf length and width of four varieties were measured during the photosynthetic active period(June).The fresh weight and dry weight of leaves and the contents of crude protein,crude fat,total sugar,lignan,chlorogenic acid and total flavone in leaves were measured after harvesting(October),and analysis of variance(ANOVA),correlation analysis and principal component analysis(PCA)were performed.It was found that the comprehensive photosynthetic performance of'Qinzhong 2'and'Qinzhong 3'with better drought resistance was better than that of'Qinzhong 1'and'Qinzhong 4'due to drought in Tacheng area.The crude protein,crude fat and total sugar contents of the four varieties were 417.87-456.97,265.63-317.31 and 68.47-79.19 mg/g,respectively.The contents of lignan,chlorogenic acid and total flavonoids ranged from 73.26-78.89,3.04-3.76 and 1.66-1.96 mg/g,respectively.Through principal component analysis,it was found that'Qinzhong 3'had the highest comprehensive score and the best production performance.The variety with the highest Pn in June was'Qinzhong 2'with the best light and performance,while the Pn of other three varieties had no significant difference.The leaf yield and quality of'Qinzhong 1'were lower,the leaf dry weight per plant of'Qinzhong 2'and'Qinzhong 3'were the highest among the four varieties,and'Qinzhong 3'had higher quality than'Qinzhong 2'.The nutrient content of'Qinzhong 4'was high,but the leaf yield was extremely low.The preliminary evaluation indicated that'Qinzhong 3'was the most suitable variety for leaf use in Tacheng area.
万方数据
维普
