Light intensity affects axillary bud quality of rubber mini-seedling budding CATAS73397

Abstract

Rubber mini-seedling budding have the characteristics of short nursery cycle, low labor intensity, large number of seedlings per unit area, easy transportation and planting, well-developed taproot and intact root system, high post-planting survival rate, fast growth, strong tolerance to drought, wind and cold, and early tapping. The quality of rubber tree axillary buds is a key factor affecting the budding of rubber mini-seedling buddings, and there are many environmental factors affecting the quality of rubber tree axillary bud. Production practice shows that moderate shading is beneficial to the quality of rubber bud stick. However, there is still a lack of systematic research on the effect of light on the quality of rubber tree axillary bud. This study set up two treatments with 75% and 100% light intensity based on production practice to observe and analyze the phenology and axillary bud morphological indicators of rubber tree leaf whorl. The results showed that axillary buds of the 3rd leaf whorl had the highest quality under 75% light intensity. Suitable light intensity promotes axillary buds to grow more robustly. Taken together, light has a significant impact on the quality of rubber tree axillary bud. Suitable lighting is more conducive to improving the quality of rubber tree axillary bud and laying a good foundation for the subsequent growth and development of rubber mini-seedling budding.