山西农业大学学报（自然科学版）2025，Vol.45Issue(4)：27-36,10.DOI:10.13842/j.cnki.issn1671-8151.202503010
43个高粱恢复系的株型评价与株高基因效应分析
Plant architecture evaluation and genetic analysis of plant height in 43 sorghum restorer lines
摘要
Abstract
[Objective]As a globally important grain and energy crop,sorghum's plant architecture optimization is crucial for en-hancing yield and stress tolerance.This study aimed to elucidate the genetic basis of plant height traits in parental lines to facili-tate targeted breeding of high-yielding,stress-resistant,and machine-harvestable sorghum varieties.[Methods]In this study,43 sorghum restoration lines were evaluated using integrated approaches including phenotypic characterization,correlation anal-ysis,cluster analysis,and molecular marker technology to systematically investigate the genetic control of plant architecture-re-lated traits and their breeding potential.[Results]Plant height showed significant positive correlations with flag leaf spacing and panicle neck length,while negatively correlating with panicle length.Phenotypic clustering analysis identified three distinct groups:group Ⅰ represented ideal plant-type germplasm;Group Ⅱ required dominant gene introgression for height improve-ment,and group Ⅲ exhibited extreme tall stature(174.50 cm)with elongated panicle necks,serving as valuable resources for biomass enhancement.The DW1 and DW2 dominant haplotype(DW1DW1DW2DW2)significantly promoted plant height(152.31 cm in the double dominant genotypes),while the recessive homozygous genotype(dw1dw1dw2dw2)specifically in-creased neck exsertion length(14.00 cm)and panicle neck length(39.89 cm).[Conclusion]This study demonstrated synergis-tic effects of DW1/DW2 dominant alleles on plant height and specific regulation of panicle neck elongation by recessive homo-zygotes,providing both theoretical insights and practical germplasm resources for plant architecture-oriented breeding pro-grams.关键词
高粱/株高/基因型/分子标记辅助选择Key words
Sorghum/Plant Height/Genotype/Molecular Marker-Assisted Selection分类
农业科技引用本文复制引用
张旷野,张飞,柯福来,吴晗,王佳旭,杨琳琳,陈柏志,赵泽阳,段有厚,张志鹏,王艳秋..43个高粱恢复系的株型评价与株高基因效应分析[J].山西农业大学学报（自然科学版）,2025,45(4):27-36,10.基金项目
国家现代农业产业技术体系(CARS-06-14.5-A11) （CARS-06-14.5-A11）
辽宁省农业科学院院长基金项目(2022BS0705) （2022BS0705）
辽宁省藏粮于技重大专项(2023JH1/10200001) （2023JH1/10200001）
沈阳市种业创新专项(24-215-2-02) （24-215-2-02）
