| 谷子育成品种的抗倒性评价 |
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| 引用本文： | 刘艳丽,田伯红,张立新,宋淑贤,王建广.谷子育成品种的抗倒性评价[J].河北农业科学,2014(4):8-12. |
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| 作者姓名： | 刘艳丽 田伯红 张立新 宋淑贤 王建广 |
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| 作者单位： | 沧州市农林科学院,河北 沧州061001 |
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| 基金项目： | 国家现代农业产业技术体系（CARS-07-12.5-BI） |
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| 摘 要： | 倒伏对谷子产量和品质以及机械化收获均有显著影响。为了筛选适宜机械化收获的谷子品种，以近几年通过国家鉴定、省级审定和参加国家区试的22个谷子育成品种为试材，利用倒伏系数评价了参试谷子品种的抗倒性；通过分析茎秆性状（株高、单茎鲜重、根量、茎秆抗折力、基部4节的长度、茎秆机械强度）与品种倒伏系数的相关关系，明确了影响谷子抗倒性的关键性状指标；并以抗倒性有显著差异的几个谷子品种为代表，探讨了这些关键性状指标如何影响谷子的抗倒伏能力。结果表明：济谷14、济谷16和冀谷31的倒伏系数均＜0.15，抗倒伏能力很强； M2173、济谷13、衡0950和济谷12的倒伏系数均＞0.29 ，抗倒伏能力较弱。本研究条件下，谷子株高和单茎鲜重与倒伏系数呈正相关，基部4节的长度与倒伏系数呈负相关，但关系程度均不密切；根量、茎秆抗折力和茎秆机械强度与谷子抗倒性有非常密切的关系。将抗倒性明显不同的7个谷子品种进行了3个关键性状指标的对比分析，结果发现，根量越大，茎秆抗折力越大，茎秆的机械强度越大，谷子品种的抗倒伏能力越强，越适合机械化收获。
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| 关 键 词： | 谷子 育成品种 抗倒性 倒伏系数 评价指标 |
The Evaluation on Lodging Resistance of Foxtail Millet Bred Varieties |
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| LIU Yan-li,TIAN Bo-hong,ZHANG Li-xin,SONG Shu-xian,WANG Jian-guang.The Evaluation on Lodging Resistance of Foxtail Millet Bred Varieties[J].Journal of Hebei Agricultural Sciences,2014(4):8-12. |
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| Authors: | LIU Yan-li TIAN Bo-hong ZHANG Li-xin SONG Shu-xian WANG Jian-guang |
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| Institution: | (Cangzhou Academy of Agriculture and Forestry Sciences, Cangzhou 061001, China) |
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| Abstract: | Lodging had serious affect on grain yield and quality of foxtail millet as well as mechanized harvesting.In order to select millet varieties suitable for mechanized harvesting , taking 22 millet bred varieties as experimental materials, which through the national identification, the provincial approval and had joined the national or regional test recent years, the lodging resisitance of 22 foxtail millet varieties were evaluated using lodging coefficient , the key character index affect the foxtail millet lodging resistance was definited by analyzing the correlation of stalk traits （ plant height, fresh weight of above-ground stem and head, root weight, stem broken strength, length of 4 internode, mechanical strength ） and lodging coefficient, then taking several varieties of foxtail millet with significant difference in lodging resistance as represents , these key indicators is how to affect the lodging resistance of foxtail millet was discussed.The results showed that the lodging coefficient of Jigu14, Jigu16 and Jigu31 all smaller than 0.15, the lodging resistance ability was very strong.The lodging coefficient of M2173, Jigu13, Heng0950 and Jigu12 were greater than 0.29, the resistance lodging ability was weaker.Under the conditions of this study, there was a positive correlation between plant height, fresh weight and lodging coefficient, there was a negative correlation between length of 4 internode and lodging coefficient , but the relationship of both were not close, the relationship of root weight, stem broken strength, stalk and mechanical strength were very close with lodging coefficient.And the contrastive analysis was made with three key indicators of seven foxtail millet varieties with significant difference in lodging resistance, theresults showed that the root weight greater, stalkstem broken strength stronger, stalk mechanicalstrength greater, the lodging resisitance ability offoxtail millet stronger, the more suitable for mechanized harvesting. |
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| Keywords: | Foxtail millet Bred variety Lodging resistance Lodging coefficient Evaluation index |
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