| Abstract: With Vaccinium corymbosum L. ‘well’ as experimental material, the effects of leaf-retention on the survival rate, rooting, content of chlorophyll, shoot growth and chlorophyll fluorescence parameters in cutting of V. corymbosum L. were carried out. The results showed that the number, weight, and length of the roots were increased with the number of leaf-retention. Survival rate was the highest when 3 leaves were allowed to remain on a cutting branch, The chlorophyll content, number, weight, length, and diameter of new shoots of cutting with 3 leaves were better than those of other treatments, showing the best growth effects. At the same measured time point, the YIELD, ETR and qP values of the cutting with 3 leaves were higher than those of other treatments, and maintained relatively high levels throughout the day. While the qN value had an opposite trend compared with the YIELD, ETR and qP values. The ETR value of the light response curve of the cutting with 3 leaves was stable and higher than those of other treatments, and the light saturation was 1500 μmol·m-2·s-1. The cutting with 3 leaves can maintain a high photosynthetic activity and can better promote the improvement of electron transfer ability, which effectively promotes photosynthesis and provids nutrition guarantee for the cutting, resulting in accelerating the growth capacity and the survival rate of V. corymbosum L. |
