| 张明伟，王 慧，董召娣，丁锦峰，李春燕，朱新开，封超年，郭文善.扬麦系列品种植株抗倒性能的演变及与茎秆性状的关系[J].麦类作物学报,2016,36(9):1199 |
| 扬麦系列品种植株抗倒性能的演变及与茎秆性状的关系 |
| Relationship Between Lodging Resistance and Culm Traits of Yangmai Series Varieties |
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| DOI：10.7606/j.issn.1009-1041.2016.09.11 |
| 中文关键词: 小麦 品种 倒伏 抗倒伏指数 |
| 英文关键词:Wheat Variety Lodging Culm lodging resistant index |
| 基金项目:国家自然科学基金项目（31271642）；“十二五”国家科技支撑计划项目（2013BAD07B09）；农业部行业科研专项(201503130)；江苏省高校自然科学基金重大项目（13KJA210004）；江苏省自主创新项目［CX（15）1002］; 扬州市农业科技攻关计划项目(YZ2014166) |
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| 中文摘要: |
| 为了解扬麦系列品种的抗倒性变化规律及与茎秆性状的关系，研究了不同年代育成的扬麦系列品种茎秆形态结构、解剖结构、力学结构等抗倒性指标的差异。结果表明，随着育成年代的推移，小麦品种的株高下降，基部第二节间长度呈现缩短的趋势，而基部第1节间长度无明显变化。近、现代育成的扬麦品种基部节间秆壁厚度与基部节间单位长度干重在总体上大于早期育成的扬麦品种，而茎秆粗度无显著差异。育成年代越早的品种抗倒性越差，倒伏面积越大，倒伏程度越严重；近几年育成的品种抗倒性显著增强，发生倒伏的风险降低，产量提高。通径分析表明，株高是影响小麦品种抗倒性的最主要因素，基部第1、第2节间壁厚、基部二节间单位长度干重、茎粗等性状也是影响小麦品种抗倒性的重要指标。 |
| 英文摘要: |
| This test was established with eight Yangmai series varieties bred between 1980s and 2011s to analyze the main influence factors in lodging-resistant(such as morphological characteristics, anatomical structure and the mechanical structure) for comparing their lodging resistance and yield. The main results were as follows:with the lapse of time, plant height became lower and the length of the second internodes got shorter, the length of basal internodes showed no significant trend changes while plant type changed from loose to compact. The thickness and weight per unit length of the basal internodes of wheat which were bred in recent years were greater than that which were bred in early years. But the stem diameter was not significantly related to the years when the wheat was bred. Lodging risk of wheat which was bred in recent years decreased while the earlier the wheat was bred, the capacity in lodging-resistant was weaker, the lodging area was larger and the degree of lodging is higher. The path analysis showed that plant height was the most important factor on lodging-resistant. Also, there were some other important indexs , such as the thickness of the basal and second internodes, weight per unit length of second internode and stem diameter. |
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