茶树氮高效机制及品种筛选指标研究进展OA

Nitrogen(N)is an essential macronutrient for plant growth and development,and has been the subject of significant research.In recent years,breeding plants with high nitrogen use efficiency(NUE)has become a prominent focus,both theoretically and practically.However,compared with the remarkable research progress achieved in staple food crops such as rice and wheat,little systematic research has been conducted into cash crops.Tea plant(Camellia sinensis)is an important cash crop,with its economic benefits primarily derived from vegetative organs(buds and leaves).Nitrogen plays a crucial role in the growth,morphology,and quality formation of tea leaves.This paper reviewed the effects of nitrogen on tea plant growth and quality,summarized research progress on nitrogen-efficient tea plants from the perspectives of physiological processes,molecular regulatory mechanisms,and genetic foundations,outlined screening criteria for nitrogen-efficient tea cultivars,and provided future research directions.