| 刘龙元1，2，贺鸿志2，黎华寿2.水分胁迫对苦参生长生理及有效成分的影响[J].广东农业科学,2015,42(23):76-81 |
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水分胁迫对苦参生长生理及有效成分的影响 |
| Effects of water stress on growth and physiological-biochemicalcharacteristics of Sophora flavescens Ait. |
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| DOI： |
| 中文关键词: 苦参 水分胁迫 生长 生理特性 |
| 英文关键词: Sophora flavescens Ait. water stress growth physiological-biochemical characteristic |
| 基金项目:国家“973”计划项目（2011CB100400-G）；
国家“863”计划项目（2013AA102402）；农业部华南热
带农业环境重点实验室2013 年度开放课题 |
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| 摘要点击次数: 1287 |
| 全文下载次数: 398 |
| 中文摘要: |
| 采用盆栽试验，设置轻度干旱、中度干旱、重度干旱和正常灌水处理，测定苦参生物量、根长、株
高、小叶数、叶绿素、脯氨酸及总黄酮、生物总碱等指标，研究水分胁迫对苦参生长及生理生化特性的影响。
结果表明，水分胁迫对苦参的生长与生物量产生了显著的影响，在轻度胁迫条件下，苦参根长、株高、小叶数
均有不同程度的增加，并显著促进生物量生长，而中度、重度胁迫则显著抑制苦参生长；随着胁迫程度加剧，
轻度、中度、重度水分胁迫处理下苦参叶片的叶绿素含量分别下降2.20%、10.14%、40.51%，而脯氨酸含量逐
步增加，轻度胁迫处理的脯氨酸含量与对照差异不显著，中度、重度胁迫处理的脯氨酸含量急剧增加，分别为
对照的2.4257、10.6920 倍；随着水分胁迫的加重，苦参总黄酮和生物总碱含量逐渐减少，轻度、中度、重度胁
迫下苦参总黄酮含量分别降低23.25%、47.47%、55.09%，生物总碱含量分别降低19.95%、23.12%、51.78%。说
明苦参具有较强的水分适应性和抗旱能力，且在适度缺水（土壤含水量在土壤田间持水量的50%~75%）有助
于苦参生物量生长及有效成分积累。 |
| 英文摘要: |
| To study the effects of water stress on growth and physiological characteristics of Sophora flavescens Ait.，
the biomass，root length，plant height，number of leaflets，chlorophyll，proline and flavonoids，alkaloids of S. flavescens
were measured under three water stresses（light drought，moderate drought，severe drought）and nomal irrigation in
a pot experiment. The results showed that under light drought stress condition，the root length，plant height，number of
leaflets got varying degrees of increase，and the biomass was significantly promoted. However，the growth of S. flavescens
was significantly inhibited under moderate，severe stress. With the increase of stress level，in the light，moderate and
severe drought stress treatments，chlorophyll contents decreased by 2.20%，10.14%，40.51%. Proline content of light
water stress treatment had no significant difference with CK，but proline contents of moderate，severe water stress
increased dramatically，respectively were 2.4257 and 10.6920 times of CK. The contents of total flavonoids and alkaloids
of S. flavescens decreased as the drought intensifiing，with the content of total flavonoids reduced by 23.25%，47.47%，
55.09% respectively，and the content of alkaloid reduced
by 19.95%，23.12%，51.78% respectively. These
results suggest that S. flavescens had strong osmotic stress
resistance ability and drought resistant ability. The soil
moisture content in 50%-75% of soil field capacity，
would contribute to the biomass growth and accumulation
of effective components. |
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