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[1]范海兰,洪伟,吴承祯,等.水分胁迫对短葶山麦冬生长和总皂苷量的影响[J].应用与环境生物学报,2011,17(03):345-349.[doi:10.3724/SP.J.1145.2011.00345]
 FAN Hailan,HONG Wei,WU Chengzhen,et al.Effects of Water Stress on Growth and Total Saponin Content of Liriope muscari (Decne.) Bailey[J].Chinese Journal of Applied & Environmental Biology,2011,17(03):345-349.[doi:10.3724/SP.J.1145.2011.00345]
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水分胁迫对短葶山麦冬生长和总皂苷量的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
17卷
期数:
2011年03期
页码:
345-349
栏目:
研究论文
出版日期:
2011-06-24

文章信息/Info

Title:
Effects of Water Stress on Growth and Total Saponin Content of Liriope muscari (Decne.) Bailey
作者:
范海兰洪伟吴承祯李键陈灿黄锦湖荣海
(福建农林大学林学院,福建省高校森林生态系统过程与经营重点实验室 福州 350002)
Author(s):
FAN Hailan HONG Wei WU Chengzhen LI Jian CHEN Can HUANG Jinhu RONG Hai
(Forestry College of Fujian Agriculture and Forestry University, Key Laboratory of Fujian Universities for Forest Ecological System Process and Management, Fuzhou 350002, China)
关键词:
水分胁迫短葶山麦冬生物量总皂苷田间持水量
Keywords:
water stress Liriope muscari (Decne.) Bailey biomass total saponin field capacity
分类号:
Q945.78
DOI:
10.3724/SP.J.1145.2011.00345
文献标志码:
A
摘要:
以盆栽的短葶山麦冬为材料,采用称重控制浇水的方法,设置对照(CK)、轻度胁迫(W1)、中度胁迫(W2)、重度胁迫(W3)4个处理[土壤含水量分别为土壤田间持水量(FC)的80%、65%、50%和35%],研究不同程度土壤水分胁迫对短葶山麦冬生长和总皂苷量的影响规律. 结果表明:短葶山麦冬生物量总体分配格局表现为叶片>根茎>须根>叶基>块根. 在胁迫至d 75(块根发生期)和d 130(块根膨大前期)时中度胁迫(50% FC)组具有最大的叶片和须根生物量及须根分配比例,d 195(块根膨大后期)时对照(80% FC)具有最大的叶片和须根生物量,但各处理差异未达显著水平. 随土壤水分胁迫的加剧,叶生物量分配比例总体呈下降趋势. 中度胁迫组具有最大的块根生物量和块根分配比例及根冠比,而重度胁迫推迟了块根的萌生. 各土壤水分条件下须根总皂苷含量差异不显著,对照的须根总皂苷产量显著高于轻度和重度胁迫组. 表明短葶山麦冬对土壤水分有较强的适应性,随土壤水分减少,趋于将更多的资源分配给根系以提高根冠比,50% FC土壤水分条件可提高块根产量,80% FC下可获最大的须根总皂苷产量. 图3 表1 参19
Abstract:
Four different levels of water stress, mild water stress (W1, 65% FC), moderate water stress (W2, 50% FC), severe water stress (W3, 35% FC) and the control (CK, 80% FC), were applied to study the effects of water stress on the growth and total saponin content of fibrous root of Liriope muscari (Decne.) Bailey by pot culture. The results showed that the biomass distribution of organs in order was leaf > rhizome > fibrous root > leaf base > tuber root. The moderate stress treatment had the biggest leaf and fibrous root biomass, and fibrous root biomass proportion at d 75 (tuber-bearing stage) and d 130 (tuber-expanding stage), while at d 195 (tuber-expanding late stage) CK group had the biggest leaf and fibrous root biomass, but had no significant difference compared with the other treatments. The distribution proportion of leaf biomass showed a descend trend as a whole with the decreasing of soil water content. The biomass, proportion of tuber and ratio of root and shoot were biggest in the moderate water stress treatment. The severe water stress retarded the tuber initiation. The total saponin contents of fibrous root had no significant difference among the different water stress treatments. The total saponin yield of fibrous root of the control treatment was significantly higher than those of the mild and severe water treatments. The results indicated that L. muscari (Decne.) Bailey had the great adaptability to different soil water condition and tended to allocate more resources to roots to raise root/shoot ratio under water stress. The tuber yield could increase under 50% FC and the total saponin yield of fibrous root would be highest under 80% FC. Fig 3, Tab 1, Ref 19

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备注/Memo

备注/Memo:
国家自然科学基金项目(No. 31070606)和教育部博士点学科专项基金(No. 20093515110006)资助
更新日期/Last Update: 2011-06-23