云新系核桃脂肪酸合成和种仁性状与酶活性相关性研究OA

In order to understand the relationship between seed traits such as fatty acid synthesis and kernel shrinkage rate and related enzyme activity in Yunxin walnut,two Yunxin cultivars,'Yunxin plateau'and'Yunxin 301',were used as experimental materials to study the activ-ity of fatty acid synthesis related enzymes in fruits at different maturity stages.Results showed that:the activity of 3 kinds of fatty acid synthe-sis related enzymes in the seed acelase A carboxyrase(ACCASE),plant acetone kinase(PK),plant 6-phosphoric acid synthetic enzymes The near-mature period is manifested as a rise first and then decrease.Among the fatty acid components,the highest content of linoleic acid was 56.30%,followed by oleic acid was 24.49%,α-linolenic acid was 8.67%,palmitic acid was 7.81%and stearic acid was 2.73%.General-ly speaking,the content of unsaturated fatty acids in the measured clouds in the new line of clouds is much higher than the content of saturated fatty acids.There is no significant correlation between 5 fatty acids and 3 fatty acid synthesis activity,but the measured is measured,but the measured measured There is a significant correlation between fatty acids.The three enzymes of ACCASE,PK,and G6PDH play an important role in the process of walnut fat synthesis.The two enzyme activity of ACCASE and PK is the key to affecting the content of walnut kernels and the key factor affecting walnut shrinkage.