| 不同海拔梯度对云南木薯生长及块根品质的影响 |
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| 引用本文： | 李月仙,段春芳,姜太玲,刘倩,严炜,熊贤坤,张林辉,宋记明,沈绍斌,周迎春,刘光华. 不同海拔梯度对云南木薯生长及块根品质的影响[J]. 作物杂志, 2022, 38(5): 153-60. DOI: 10.16035/j.issn.1001-7283.2022.05.022 |
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| 作者姓名： | 李月仙 段春芳 姜太玲 刘倩 严炜 熊贤坤 张林辉 宋记明 沈绍斌 周迎春 刘光华 |
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| 作者单位： | 1云南省农业科学院热带亚热带经济作物研究所,678000,云南保山2保山全心农业科技有限公司,678000,云南保山3云南省农业科学院生物技术与种质资源研究所,650205,云南昆明 |
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| 基金项目： | 财政部和农业农村部：国家现代农业产业技术体系——国家木薯产业技术体系保山综合试验站(CARS-11-YNLGH);滇桂黔石漠化地区特色作物产业发展关键技术——云南低热河谷石漠化生态循环农业模式集成示范(2019-2021);刘国道专家工作站(202005AF150021);保山市第八批中青年学术和技术带头人(201905);云南省科技厅科技计划项目——技术创新人才培养对象项目(202105AD160041) |
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| 摘 要： | 为了明确不同海拔梯度对云南木薯生长及块根品质的影响,研究了800、1000、1200、1400和1600m 5个海拔梯度下木薯生长和品质指标,并采用相关、逐步回归、通径和决定程度等方法分析了海拔梯度变化对其影响。随海拔梯度的变化,变异系数最大的是是否有花果和氢氰酸含量;株高、主茎高、分枝数和落叶高度指标在低海拔与高海拔差异显著,且与海拔梯度变化呈显著负相关;不同海拔梯度的变化主要影响了木薯生长的落叶高度、分枝数和株高,影响值为71.1%,对块根的L(+)-抗坏血酸和氢氰酸含量也产生影响,影响值为95.6%。随着海拔梯度的升高,块根淀粉、蛋白质、L(+)-抗坏血酸和氢氰酸含量随之增加,且与海拔梯度变化呈显著正相关,粗纤维含量基本不变。不同海拔梯度影响云南木薯生长及块根品质,其中对块根氢氰酸含量变异的直接影响最大。1400m海拔的木薯块根品质基本能满足生产需求,木薯栽培可以扩大到高海拔区域。
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| 关 键 词： | 木薯 海拔梯度 生长 块根品质 |
| 收稿时间： | 2021-06-01 |
The Influences of Different Altitudes Gradients on Growth and Rhizome Quality of Cassava in Yunnan Province |
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| Li Yuexian,Duan Chunfang,Jiang Tailing,Liu Qian,Yan Wei,Xiong Xiankun,Zhang Linhui,Song Jiming,Shen Shaobin,Zhou Yingchun,Liu Guanghua. The Influences of Different Altitudes Gradients on Growth and Rhizome Quality of Cassava in Yunnan Province[J]. Crops, 2022, 38(5): 153-60. DOI: 10.16035/j.issn.1001-7283.2022.05.022 |
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| Authors: | Li Yuexian Duan Chunfang Jiang Tailing Liu Qian Yan Wei Xiong Xiankun Zhang Linhui Song Jiming Shen Shaobin Zhou Yingchun Liu Guanghua |
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| Affiliation: | 1Tropical and Subtropical Economic Crops Institute, Yunnan Academy of Agricultural Sciences, Baoshan 678000, Yunnan, China2Baoshan Quanxin Agricultural Science and Technology Co. Ltd., Baoshan 678000, Yunnan, China3Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan, China |
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| Abstract: | To study the effects of altitude gradients on growth and rhizome quality of cassava in Yunnan province, the growth and rhizome quality of cassava at 800, 1000, 1200, 1400 and 1600m were studied by using correlation analysis, stepwise regression, path analysis and degree of determination analysis methods. The maximum variation coefficients were bearing flower and fruit or not and hydrocyanic acid content with the change of altitude gradient. There were notable differences of plant height, main stem height, branch number, and deciduous height between high altitude and low altitude. These differences almost showed a downward trend with the rise in altitude, and they were significantly negatively correlated with changes in the altitude gradients. The changes of different altitude gradients mainly affected the deciduous height, branch number and plant height of cassava, with an impact value of 71.1%, and also had impact on the L(+)-ascorbic acid and hydrocyanic acid content of roots, with an impact value of 95.6%. With the increasing of altitude, the content of starch, protein, L(+)-ascorbic acid and hydrocyanic acid of rhizome also increased, and there was a significant positive correlation with the changes of altitude gradients, while the crude fiber content remained basically unchanged. The growth and rhizome quality of cassava in Yunnan were influenced by different altitude gradients, among which the altitude gradient had the maximum direct influences on the variation of hydrocyanic acid content. The quality of cassava rhizome of 1400m can basically meet the production demand, and cassava cultivation could be expanded to high-altitude areas. |
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| Keywords: | Cassava Altitude gradient Growth Rhizome quality |
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