| 低铁胁迫与大豆品种铁效率间的关系 |
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| 引用本文： | 赵 婧,邱 强,张鸣浩,孙星邈,钱芙蓉,张 伟,闫晓艳.低铁胁迫与大豆品种铁效率间的关系[J].中国农学通报,2016,32(30):49-55. |
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| 作者姓名： | 赵 婧 邱 强 张鸣浩 孙星邈 钱芙蓉 张 伟 闫晓艳 |
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| 作者单位： | (吉林省农业科学院大豆研究所/大豆国家工程研究中心,长春 130033） |
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| 基金项目： | 国家自然科学基金“铁胁迫下不同基因大豆根系调控及对Fe-EDDHA应答生理机制”(31271647)；吉林省自然科学基金“大豆铁高效种质资源挖掘及其高效利用生理机制研究”(20150101100JC)。 |
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| 摘 要： | 笔者以铁效率差异显著的铁高效和铁低效大豆品种为试验材料，旨在探明低铁胁迫与大豆品种铁效率间的关系。研究结果表明：通过主成分分析发现，地上部光能吸收因子和根系形态因子的贡献率最高，分别为41.0%和67.2%；根据这2个因子中绝对值较高的特征向量可以看出，提高光合作用以及根系表面积有助于提高大豆耐低铁能力。从Logistic方程动态模拟结果来看，铁高效品种的地上部和根系生长的V和Vm均高于铁低效品种；低铁处理令铁低效品种根系到达Vm的时间推后，而铁高效品种则通过提高根系V来抵抗低铁对生长所造成的伤害。但当铁浓度为0 mmol/L时，无论是铁高效品种还是铁低效品种地上部的V、Vm和△t都较低，表明不同铁效率品种的划分是相对的，并不是绝对的，植物抵御胁迫的能力不仅是由自身特性所决定，与胁迫程度也是紧密相关的。
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| 关 键 词： | 猪精子 猪精子 冷冻保存 乳糖 蔗糖 海藻糖 |
| 收稿时间： | 2/2/2016 12:00:00 AM |
| 修稿时间： | 2016/10/9 0:00:00 |
Relationship Between Fe Deficiency Stress and Fe Efficiency of Soybean Cultivars |
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| Zhao Jing,Qiu Qiang,Zhang Minghao,Sun Xingmiao,Qian Furong,Zhang Wei and Yan Xiaoyan.Relationship Between Fe Deficiency Stress and Fe Efficiency of Soybean Cultivars[J].Chinese Agricultural Science Bulletin,2016,32(30):49-55. |
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| Authors: | Zhao Jing Qiu Qiang Zhang Minghao Sun Xingmiao Qian Furong Zhang Wei and Yan Xiaoyan |
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| Institution: | (Soybean Research Institute, Jinlin Academy of Agricultural Sciences/National Engineering Research Center of Soybean, Changchun 130033) |
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| Abstract: | In order to study the relationship between Fe deficiency stress and Fe efficiency of soybean cultivars, Fe-efficient and Fe-inefficient soybean varieties were used in the experiment. The results of principal components analysis showed that the contribution rate of shoot light energy absorption factor and root morphology factor were the highest, which was 41.0% and 67.2%, respectively; according to characteristic vectors with higher absolute value in these two factors, it was indicated that the improvement of photosynthesis and root surface area was helpful to enhance soybean resistance to low iron. In addition, the results of Logistic equation dynamic simulation showed that V and Vm of overground part and root growth of Fe-efficient variety were higher than that of Fe-inefficient variety; the time of arrival in Vm of Fe-inefficient variety was delayed by low iron treatment, while Fe-efficient variety resisted the growth damage caused by low iron stress through the increase of root V. When iron concentration was 0 mmol/L, V, Vm and △t of overground part in both Fe-efficient and Fe-inefficient varieties were lower, which indicated that the partition of varieties with different tolerance to low iron was relative, not absolute, and plant tolerance depended not only on cultivar characteristics, but also on stress level. |
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| Keywords: | soybean Fe deficiency Fe-efficient Fe-inefficient principal components analysis Logistic equation |
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