Study On Growth And Quality Formation Of Red Globe Berry

The variety of Vitis viniferal,named Red Globe was used in experiment to study the growth dynamics ,quality formation,net photosynthesis,changes in contents of endogenous auxin,the result shows that: The cycle of the grape berry may be divided into three stages,each stage lasts 35days,26days,and 51days.Low dose GA dispose,girdling on fruiting shoot,photorespiration inhibitor don't change the variation of fruit growth,only advance the height of peak. The contents of sugar,acidity change at different stages,after veration,fruit rigidity gradually decline,while lightness and redness increase. The dispose of girdling ,GA, photorespiration inhibitor can all augment berry,the dispose of girdling can optimize berry quality, the dispose of photorespiration inhibitor can postpone maturity of berry. The berry weight,the contents of TSS increase with reduction of remained berry capacity , cluster can be standard and berry quality can be relatively better with 40~60 berries remained per cluster. The dispose of outer GA significantly boosts the contents of endogenous auxin at earlier stages ,the emergence of the GA peak tallys with the growth peak of berry,net photosynthesis increases with rise of nodes ,net photosynthesis of lateral shoot leaves are higher than those of primary shoot leaves on bearing shoot.The dispose of photorespiration inhibitor significantly increase net photosynthesis.Girdling improves berry quality by change photosynthesis production flow.