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| 药隔期低温对小麦植株形态和产量性状的影响及抗寒性评价 |
| Effects of Low Temperature at the Anther Interval Formation Stage on Plant Morphology and Yield Traits of Wheat and Coldness Resistance Evaluation |
| 投稿时间：2025-02-26 修订日期：2025-05-23 |
| DOI： |
| 中文关键词: 小麦 药隔期 植株形态 产量性状 抗寒性 |
| 英文关键词:Wheat Anther interval formation stage Plant morphology Yield traits Coldness resistance |
| 基金项目:陕西省重点产业创新链项目（2021ZDLNY01-02） |
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| 中文摘要: |
| 为探讨倒春寒对小麦植株形态和产量性状的影响,以 C112-8、矮抗58、百农207等18个小麦品种(系)为试验材料,在药隔期通过低温培养箱低温胁迫模拟倒春寒,分析倒春寒发生后小麦的叶片和穗部冻害、株高和产量的变化及不同材料的抗寒性。结果表明,药隔期低温胁迫后小麦叶片发黄,叶面积减小,株高提取出3个特征值大于1的主成分,其累计贡献率达82.954%。基于隶属函数综合值(D 值)对18个小麦降低,穗变小。低温胁迫导致穗数、穗粒数和千粒重下降,最终降低产量。通过对13个性状进行主成分分析,材料进行聚类分析,其中矮抗58、宝研12和菏麦918对倒春寒抗性较强,衡H195105、农大1980、郑麦366、西农529、陕麦139、泰科麦0311、西农20、婴泊700和百农207对倒春寒抗性中等,其余材料的抗性较弱。 |
| 英文摘要: |
| To investigate the effects of late spring coldness on wheat plant morphology and yield traits, 18 wheat materials, including C112-8, Aikang 58, and Bainong 207, were used as experimental materials. During the the anther interval formation stage, low temperature stress was simulated using a low-temperature incubator to mimic late spring coldness. The study analyzed changes in leaf and spike frost damage, plant height, and yield after the occurrence of late spring coldness, as well as the cold resistance of different wheat materials.The results showed that wheat leaf yellowed, leaf area decreased, plant height decreased and spike type decreased after low temperature stress treatment. Low temperature stress resulted in the decrease of panicle number, grain number per spike and 1000-grain weight, and finally the yield was decreased. Through principal component analysis of 13 traits, 3 principal components with characteristic values greater than 1 were extracted, and their cumulative contribution rate reached 82.954%. Cluster analysis was conducted on 18 wheat materials based on the comprehensive value of membership functions (D-value), where Aikang 58, Baoyan 12, and Hemai 918 exhibited strong resistance to late spring coldness. Hengmai H195105, Nongda 1980, Zhengmai 366, Xinong 529, Shanmai 139, Taikemai 0311, Xinong 20, Yingbo 700, and Bainong 207 showed medium resistance to late spring coldness, while the remaining wheat materials had weaker resistance. |
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