Research Progress on the Influence of Drought on Sugarcane Growth and its Response Mechanism to Drought
Drought is one of the main abiotic stress factors that affect the growth,development,and yield of sugarcane.With the increasing occurrence of global extreme weather,the risk of sugarcane being subjected to drought stress is increasing.The impacts of drought on sugarcane growth are multifaceted,with different organs exhibiting different manifestations.Sugarcane undergoes a series of regulatory mechanisms to resist drought stress,including changes in morphological and physiological and biochemical characteristics.This paper summarizes the effects of drought stress on the growth of sugarcane leaves,roots,and stems,as well as the effects of drought on sugarcane growth at different growth stages.It discusses the response mechanism of sugarcane to drought stress from the perspectives of osmotic regulation,antioxidant enzymes,endogenous hormones,rhizosphere microorganisms,and gene expression.Furthermore,it also prospects the systematic mechanisms of sugarcane response to drought,difference of drought tolerance of different sugarcane varieties and research on improving sugarcane drought tolerance,to provide theoretical reference sugarcane production and related research.
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