| 钾素调控植物光合作用的生理机制 |
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| 引用本文： | 韦海南, 张金燕, 龙光强, 等. 不同钾水平对二年生三七生长特征及皂苷含量的影响[J]. 云南农业大学学报（自然科学）, 2019, 34(4): 695-704. DOI: 10.12101/j.issn.1004-390X(n).201903038 |
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| 作者姓名： | 韦海南 张金燕 龙光强 范伟 孟珍贵 李龙根 陈中坚 陈军文 |
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| 作者单位： | 1.云南农业大学 农学与生物技术学院，云南 昆明 650201;2.云南农业大学，西南中药材种质创新与利用国家地方联合工程研究中心，云南 昆明 650201;3.云南农业大学 药用植物生物学重点实验室，云南 昆明 650201;4.文山学院，文山三七研究院，云南 文山 663000 |
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| 基金项目： | 国家自然科学基金项目（81860676）；云南省科技重大专项项目（2017ZF001，2016ZF001）；云南省中青年学术技术带头人后备人才培养项目（2014HB011） |
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| 摘 要： | 
ttttt目的ttttt探究钾水平对二年生三七[Panax notoginseng (Burk) F·H·Chen]农艺性状和质量性状的影响。tttttttttttttttttt方法ttttt通过盆栽试验研究不同钾水平[0、225、450、900、1 350 kg/hm2氧化钾(K2O)]对二年生三七植株的外观形态、生物量、叶片解剖结构及皂苷含量的影响。tttttttttttttttttt结果ttttt三七的株高、冠幅、叶面积、茎粗及植株的干重在450 kg/hm2钾水平下最高，但是根冠比、根质比和叶质比差异不显著。须根数在900 kg/hm2处理下最多，主根长、块根长、块根直径和根系体积在450 kg/hm2处理下达到最大值。450 kg/hm2 处理下，叶片厚度、上表皮厚度、栅栏组织/海绵组织和栅栏组织/叶片厚度显著低于其他处理(P<0.05)。剪口和主根的总皂苷百分含量在450 kg/hm2钾水平下达到最大，须根的总皂苷百分含量在1 350 kg/hm2达到最大。剪口、主根和须根的单株总皂苷含量均在450 kg/hm2处理下达到最大。tttttttttttttttttt结论ttttt本试验条件下，450 kg/hm2的钾水平最有利于二年生三七生长及皂苷含量的积累。ttttttttt
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| 关 键 词： | 三七 钾素水平 农艺性状 解剖结构 生物量 皂苷 |
| 收稿时间： | 2019-03-17 |
| 修稿时间： | 2019-04-23 |
Potassium in agriculture-status and perspectives |
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| Hainan WEI, Jinyan ZHANG, Guangqiang LONG, et al. The Growth Characteristics and Ginsenoside Content in Two-year-old Panax notoginseng under Potassium Regimes[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2019, 34(4): 695-704. DOI: 10.12101/j.issn.1004-390X(n).201903038 |
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| Authors: | Hainan WEI Jinyan ZHANG Guangqiang LONG Wei FAN Zhengui MENG Longgen LI Zhongjian CHEN Junwen CHEN |
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| Affiliation: | 1.College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China;2.National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming 650201, China;3.Yunnan Provincial Key Laboratory of Medicinal Plant Biology, Yunnan Agricultural University, Kunming 650201, China;4.Sanqi Research Institute of Wenshan, Wenshan University, Wenshan 663000, China |
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| Abstract: |
tttttPurpose tttttTo explore the effects of different potassium levels on agronomic traits and quality traits of the two-year-old Panax notoginseng.ttttttttttttttttttMethodtttttThe effects of different potassium levels [0, 225, 450, 900, 1 350 kg/hm2 potassium oxide (K2O)] on the appearance, biomass, leaf anatomical structure and saponin content of two-year-old P. notoginseng were examined by pot experiment.ttttttttttttttttttResulttttttAt the 450 kg/hm2 level of potassium, the plant height, crown width, leaf area, stem diameter and plant dry weight of P. notoginseng reached a maximum value, however, there were no significant differences in root-shoot ratio, root-mass ratio and leaf-mass ratio. At the 900 kg/hm2 level of potassium, the number of fibrous roots were the most, and at the 450 kg/hm2 level of potassium, the taproot length, tuber root length, tuber root diameter and root volume reached the maximum. Leaf thickness, upper epidermis thickness, palisade tissue/sponge tissue and palisade tissue/leaf thickness were significantly lower than those of other potassium treatments at 450 kg/hm2 potassium level. Both the percentage of total saponins in rhizome and taproot reached the maximum value at the level of 450 kg/hm2 potassium level, and the highest percentage of total saponins in fibrous root was appearance under 1 350 kg/hm2 potassium level. The content of total saponins per plant of rhizome, taproot and fibrous root reached the maximum under 450 kg/hm2 potassium level.ttttttttttttttttttConclusiontttttIn the present experimental conditions, the potassium level of 450 kg/hm2 was most beneficial to the growth and accumulation of saponins in two-year-old P. notoginseng.ttttttttt
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| Keywords: | Panax notoginseng potassium levels agronomic traits anatomical structure biomass saponin |
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