土壤与作物2024，Vol.13Issue(4)：471-478,8.DOI:10.11689/sc.2024020801
玉米的腋生分生组织及其发育模式调控
Axillary meristem and its regulation of development pattern in maize
摘要
Abstract
The axillary meristem of maize serves as a secondary growth axis during the plant's development,some of the axillary meristem develops into ears,and finally forms ears of corn after pollination.The development of axillary meristem contributes to maize's high plasticity,which directly determines the morphological structure and final yield.In this paper,the morphogenesis,development model,activity maintenance and development regulation of axillary meristem of maize were reviewed.The axillary meristem of maize is inhibited by TB1 gene in the vegetative growth period,and the lateral branches are basically not developed,but the ear is formed in the reproductive growth period.Axillary meristem development of maize belongs to the"separate meristem"model,in which axillary meristem is formed in the axillary position of multiple stem segments and develops from top to bottom.When the normal development pattern is broken,barren stalk or multiple ears will occur,resulting in yield reduction.After the formation of axillary meristem,it is necessary to maintain the activity by CLV-WUS negative feedback pathway.The auxin mediated apical dominance is the main endogenous regulatory factor in axillary meristem growth,while its synthesis,transport and related signal transduction all determine the growth state of axillary meristem.In addition,various nutrient elements also affect axillary meristem development by participating in different biochemical and physiological processes.Further revealing the regulatory network of axillary meristem,clarifying the interaction between axillary meristem and optimizing maize morphological structure is of great significance for maize conventional and molecular breeding.关键词
玉米/腋生分生组织/植物分支/植物激素/营养元素Key words
maize/axillary meristem/plant branching/phytohormones/nutritional elements分类
农业科技引用本文复制引用
范可馨,关义新,曾可欣,高凤鸣,崔震海,敖曼..玉米的腋生分生组织及其发育模式调控[J].土壤与作物,2024,13(4):471-478,8.基金项目
中国科学院战略性先导科技专项(XDA24030103). （XDA24030103）
