Abstract: Effects of different fruit-setting number on leaf senescence,accumulation and distribution of dry matter were studied using the Yilishabai variety grown in solar greenhouse.The results indicated that the increase of fruit-setting number led to rapid senescence of muskmelon leaf,and it was showed that the contents of soluble protein(Pr) and chlorophyll(Chl) declined quickly while the content of malondialdehyde(MDA) and the activity of peroxidase(POD) increased rapidly.With the increase of fruit-setting number,the leaf area decreased and the branches growed difficultly.At the same time,the leaf mass per area,the fruit number per cm2 leaf,the photosynthetic capacity per unit leaf,the accumulation of dry matter and its distribution in fruits increased,resulting in the increase of fruit weight per plant,whereas the single fruit weight reduced.To sum up,it is proper to set two fruits per plant in the first batch for the prematurity and small-fruit muskmelon variety.

Key words: Fruit-setting number, Muskmelon, Leaf senescence, Accumulation of dry matter

CLC Number: 

• S652.01