山西农业大学学报（自然科学版）2025，Vol.45Issue(3)：33-42,10.DOI:10.13842/j.cnki.issn1671-8151.202411058
61份玉米自交系茎秆针刺强度与解剖结构的关系
Relationship between rind penetrometer resistance and anatomical structure in 61 maize inbred lines
摘要
Abstract
[Objective]Lodging significantly impacts maize quality and yield,posing a major challenge in Chinese maize produc-tion.Rind penetrometer resistance(RPR)is a key indicator of stalk lodging resistance.This study aimed to explore the rela-tionship between RPR and stalk anatomical structure using 61 maize inbred lines.[Methods]Stalk cross-sections were analyzed using microtome sectioning and electron microscopy,while RPR was measured with a penetrometer.Correlations between these traits were statistically evaluated.[Results]The results revealed that RPR was positively correlated with the thickness of sclerenchyma,average area of single small vascular bundle,sclerenchyma thickness/stalk radius,sclerenchyma area,and scle-renchyma area/stalk cross-sectional area at P<0.01 level.Significant positive correlation(P<0.05)were also found with stalk circumference and diameter.Cluster analysis based on membership function D-value categorized the materials into three groups,with group III exhibiting significantly higher RPR than others.Linear regression analysis revealed that sclerenchyma thickness and peripheral vascular bundle area collectively determine 47%of RPR variation,directly influencing lodging resis-tance.[Conclusion]Comprehensive evaluation identified TIAN77 and TY1 as elite lodging-resistance inbred lines.These find-ings provided a theoretical basis for breeding lodging-resistance maize varieties through anatomical trait selection.关键词
玉米/抗倒伏能力/针刺强度/茎秆/解剖特性Key words
Maize/Lodging resistance/Rind penetrometer resistance/Stalk/Anatomical indexes分类
农业科技引用本文复制引用
张喜成,曹晓良,杨会勇,吕爱枝,李坤,何美敬..61份玉米自交系茎秆针刺强度与解剖结构的关系[J].山西农业大学学报（自然科学版）,2025,45(3):33-42,10.基金项目
河北北方学院基本科研业务费(JYT2023010) （JYT2023010）
河北北方学院博士基金(BSJJ202207) （BSJJ202207）
现代种业科技创新专项(21326319D) （21326319D）
