Effects of PBO and PP_(333) on Shoot Growth,Nutrient Accumulation,and Fruit Quality in Carya Illinoinensis cv.‘Shaoxing’  

作　　者：Yunqi Zhang Ying Li Yashi Deng Yilin Ou Daocheng Ma Dongdong Li Weidong Xie Zailiu Li 

机构地区：[1]Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation,Guangxi Key Laboratory of Forest Ecology and Conservation,College of Forestry,Guangxi University,Nanning,530004,China

出　　处：《Phyton-International Journal of Experimental Botany》2024年第12期3293-3312,共20页国际实验植物学杂志（英文）

基　　金：funded by the Guangxi Innovation-Driven Development Project(Grant Number AA17204058).

摘　　要：To enhance the productivity of Carya illinoinensis cv.‘Shaoxing’and mitigate the loss of flowers and fruits,the effects of different concentrations of Piperonyl Butoxide(PBO)wettable powder(2,5,and 10 g·L^(-1))and Paclobutrazol(PP_(333))(150,300,and 450 mg·L^(-1),based on active ingredients)on 6-year-old‘Shaoxing’plants were investigated with water sprayed as the control.The results showed that:(1)Treatment with 10 g·L^(-1)PBO and 450 mg·L^(-1)PP_(333)significantly inhibited the excessive growth of‘Shaoxing’branches.Also,10 g·L^(-1)PBO exhibited the best diameter increment effect on fruiting branches,and 150 mg·L^(-1)PP_(333) exhibited the best diameter increment effect on vegetative branches.(2)The content of soluble sugar and soluble protein in leaves treated reached the highest level after treatment with 450 mg·L^(-1)PP_(333),while the content of starch sugar in leaves reached the highest level after treatment with 300 mg·L^(-1)PP_(333).The application of PBO and PP_(333)mitigated the decline in N,P,K,and other nutrient levels observed in the leaves of‘Shaoxing’.As the PBO and PP_(333) concentrations increased,the nutrient elements in the leaves first increased and then decreased.Among them,300 mg·L^(-1)PP_(333)treatment exhibited the best effect on increasing the content of N,P,and K in the leaves at the late stage of fruit development.(3)In terms of fruit setting rate and nutritional quality of‘Shaoxing’fruit,5 g·L^(-1)PBO treatment showed the most promising effect on improving fruit setting rate,150 mg·L^(-1)PP_(333)exhibited the best effect on improving reducing sugar and decreasing tannin content in the kernel,10 g·L^(-1)PBO had the best effect on improving the crude fat content,and 2 g·L^(-1)PBO had the best effect on improving the cellulose content in the kernel.(4)Principal component analysis showed that 450 mg·L^(-1)PP_(333)treatment had the most comprehensive regulatory effect on the growth and development of current-year branches,leaves,and fruits of‘Shaoxing’.T

关 键 词：Carya illinoinensis cv.‘Shaoxing’ branch control fruit quality PBO PP_(333) 

分 类 号：S664.1[农业科学—果树学]