| 干旱胁迫下不同小豆品种根系生长规律研究 |
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| 引用本文： | 王姣,张永清. 干旱胁迫下不同小豆品种根系生长规律研究[J]. 作物杂志, 2016, 32(6): 112-38. DOI: 10.16035/j.issn.1001-7283.2016.06.019 |
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| 作者姓名： | 王姣 张永清 |
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| 作者单位： | 1 山西师范大学生命科学学院,041004,山西临汾2 山西师范大学地理科学学院,041004,山西临汾 |
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| 基金项目： | 国家自然科学基金(31571604) |
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| 摘 要： | 采用盆栽人工控水的方法,研究不同小豆品种根系对干旱胁迫的响应。结果表明,干旱胁迫抑制了小豆根系的生长,随着干旱胁迫的加剧,小豆的最大根长呈先增加后减少的趋势,根重、总根长、根表面积、根体积、株高、茎粗和叶面积呈减小的趋势,根冠比呈增加的趋势;不同品种小豆对干旱胁迫的响应存在差异,抗旱型品种的根重、总根长、根表面积、根体积、株高、茎粗和叶面积随干旱胁迫的加剧下降幅度小,根冠比显著加大。重度干旱胁迫下,品种间最大根长、根重、根体积、株高、茎粗、叶面积和根冠比差异在整个生育期间达显著水平。抗旱型品种冀红8937的根系更为发达,根冠比较高,中度干旱胁迫下,最大根长的增加幅度较大,随着干旱胁迫的加剧,其根重、总根长、根表面积、根体积、株高、茎粗和叶面积下降幅度较小,根冠比显著增加。
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| 关 键 词： | 干旱胁迫 小豆 根系 生长规律 |
| 收稿时间： | 2016-06-23 |
Observation on Growth Pattern of Root System in Different Adzuki Bean Varieties under Drought Stress |
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| Jiao Wang,Yongqing Zhang. Observation on Growth Pattern of Root System in Different Adzuki Bean Varieties under Drought Stress[J]. Crops, 2016, 32(6): 112-38. DOI: 10.16035/j.issn.1001-7283.2016.06.019 |
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| Authors: | Jiao Wang Yongqing Zhang |
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| Affiliation: | 1 College of Life Science,Shanxi Normal University,Linfen 041004,Shanxi,China2 College of Urban and Environmental Science,Shanxi Normal University,Linfen 041004,Shanxi,China |
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| Abstract: | Growth pattern of root system of different adzuki bean varieties were investigated under drought stress by controlling water using pot culture. Root growth was inhibited by drought stress. With increasing the drought stress, the maximum root length was increased at first then decreased. Root weight, total root length, root surface area, root volume, plant height, stem diameter and leaf area were decreased, while the root-shoot ratio was increased; Different varieties showed the different responses of root morphology to the drought stress. For the drought resistant variety , the root weight, total root length, root surface area, root volume, plant height, stem diameter and leaf area were not significantly decreased along with the increase of drought stress while the root-shoot ratio was increased sharply. Under the severe drought stress, the maximum root length, root weight, root volume, plant height, stem diameter, leaf area, and root-shoot ratio were significantly different in the whole growth period of the two varieties (p<0.05). Jihong8937 exhibited higher drought resistance than the other, the root system was developed better, and the root-shoot ratio was higher. Under moderate drought stress, the maximum root length was increased largely. With increasing of drought stress, the root weight, total root length, root surface area, root volume, plant height, stem diameter, leaf area were not significantly decreased, while the root-shoot ratio was increased sharply. |
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| Keywords: | Drought stress Adzuki bean Root system Growth pattern |
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