Effects of shoot pinching on growth and development of Lycium barbarum'Ningqi 1'branches,flowers and fruits
[Objective]In recent years,the improper pruning measures have resulted in the excessive growth of nutrient branches,yield reduction,fruit quality decline.This study aims to explore the change rule of fruit shape index,quality,yield and production value after shooting the fruiting branches of wolfberry and identify the optimal pruning degree of shoot pinching in summer pruning,thus providing references for improving quality and increasing production of wolfberry fruits.[Method]Using Lycium barbarum'Ningqi 1'as the test material,the fruiting branches of wolfberry were subjected to different degrees of shoot pinching,and the wolfberry trees with only sparing of the ungrown branches were used as the control.The changes of growth indexes of wolfberry trees and fruiting branches in the first and second years after different shoot pinching were analyzed.After fruit ripening,the variability of appearance indexes and intrinsic quality of wolfberry fruits on fruiting branches were studied.[Result]After pinching,the flowering and fruiting season of fruiting branches advanced and became more concentrated,which was conducive to batch harvesting.In addition,the longitudinal and transverse diameters of the fruits were larger than those of the control group after the treatment of 18 sections(SP1)and 30 sections(SP4)of pinching,and the intrinsic quality of soluble solids,total sugars,polysaccharides,betaine,total flavonoids,carotenoids,and VC increased compared with those of the control group.The yield of wolfberry on the first year fruiting branches increased by 12.61%and 17.89%respectively compared with the control group;the yield of the second year fruiting branches increased by 36.95%and 32.54%respectively compared with that of the control group.[Conclusion]After pinching treatment,the quality of wolfberry fruits on the first year fruiting branches was better,and the quality and yield production value of wolfberry fruits on the second year fruiting branches were improved.Among them,the two groups of pinching 18 nodes(SP1)and 30 nodes(SP4)were more obvious in improving quality and increasing yield.
Lycium barbarum'Ningqi 1'pruningquality and yield enhancementshoot pinchingthe breeding season for flowers and fruits
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