Tensile properties of seminal and nodal roots and their relationship with the root diameter and planting density of maize (Zea mays)
文献类型：期刊论文
| 作者 | S. Q. Liu, X. N. Li, X. C. Zhu and F. B. Song |
| 刊名 | Crop & Pasture Science
 |
| 出版日期 | 2018 |
| 卷号 | 69期号:7页码:717-723 |
| 通讯作者 | 刘胜群，宋凤斌 |
| 中文摘要 | The tensile property of roots is an important factor for anchorage and for resistance to root lodging. In this study, a root tensile test was applied to maize (Zea mays L.) grown in the field at three planting densities, 4.5x10(4), 6.75x10(4) and 9.0x10(4) plants ha(-1), to quantify the maximum tensile force (F-max) and tensile strength (T-s) of roots at the V10 stage (tenth leaf visible) and grain-filling stage. In addition, relationships among tensile properties, diameter and turgid weight:dry weight (TW:DW) ratio of roots were investigated. The results showed that the F-max of primary and seminal adventitious roots was lower than of nodal roots. Among nodal roots, the F-max of roots on upper nodes was higher. Planting density significantly affected the tensile force of nodal roots of the sixth to eighth tiers; their F-max decreased with increasing planting density. A positive linear correlation between F-max and root diameter and a power function between T-s and root diameter was observed. In addition, there was a positive linear correlation between the TW/DW ratio and root diameter and a negative exponential correlation between T-s and TW:DW ratio. Therefore, nodal roots with a lower TW:DW ratio could have a larger T-s, because their cells are smaller and cell walls are thicker. This result suggests that nodal roots with small and thick cells benefit the tensile properties of maize. |
| 源URL | [http://ir.iga.ac.cn/handle/131322/8920]  |
| 专题 | 东北地理与农业生态研究所_湿地生态系统管理学科组 |
| 推荐引用方式 GB/T 7714 | S. Q. Liu, X. N. Li, X. C. Zhu and F. B. Song. Tensile properties of seminal and nodal roots and their relationship with the root diameter and planting density of maize (Zea mays)[J]. Crop & Pasture Science,2018,69(7):717-723. |
| APA | S. Q. Liu, X. N. Li, X. C. Zhu and F. B. Song.(2018).Tensile properties of seminal and nodal roots and their relationship with the root diameter and planting density of maize (Zea mays).Crop & Pasture Science,69(7),717-723. |
| MLA | S. Q. Liu, X. N. Li, X. C. Zhu and F. B. Song."Tensile properties of seminal and nodal roots and their relationship with the root diameter and planting density of maize (Zea mays)".Crop & Pasture Science 69.7(2018):717-723. |
入库方式： OAI收割
来源：东北地理与农业生态研究所
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