基于抗倒伏性的大豆耐密性资源评价与筛选
- Title:
- Evaluation and Screening of Soybean Density Tolerance Resources Based on Lodging Resistance
- 摘要:
- 为筛选在黑龙江省不同地区稳定耐密植的大豆资源，为大豆的区域栽培生产提供指导和理论依据，以黑龙江省不同生态区20份春大豆资源为材料，以哈尔滨、海伦和五大连池为环境背景，设置常规栽培区和高密度处理区两个处理，以高密区未倒伏占比与常规区未倒伏占比的比值作为耐密指数，基于耐密指数值，利用欧氏距离组间平均联接法对不同大豆品种进行聚类分析，对供试材料进行等级划分。同时，利用双标图数据分析方法进行耐密性种质资源的综合评价。结果显示：哈尔滨区域背景条件下，当欧氏距离为3.0时，初步将20个参试品种(系)划分为5大类，获得耐密植品种(系)7个；海伦区域背景下，欧氏距离为4.0时，初步将20个参试品种(系)划分为4大类，获得耐密植品种(系)3个；欧氏距离为4.0时，初步将20个参试品种(系)划分为4大类，获得耐密植品种(系)5个。双标图显示，耐密品种的耐密能力顺序为克豆87>牡豆56>黑农94>黑农531>克小粒1号>黑农311>龙海1号，多环境稳定性顺序为黑农94>龙海1号>克豆87>黑农531>黑农311>牡豆56>克小粒1号。综合比较而言，耐密性强且多环境稳定性较好的品种为黑农94、克豆87和黑农531。研究结果为提升区域大豆增产能力提供了理论依据和技术支持。
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