摘要
为了研究了不同水分胁迫对桔梗生长发育以及有效成分积累的影响。通过对桔梗采用室外盆栽控水,试验设土壤相对含水量40%,60%,80%三个梯度,测定不同生长发育阶段地上、地下部分的质量以及有效成分含量。结果表明随着水分胁迫程度的加强,地上、地下部分的生长均受到抑制,但对地上部分的抑制更明显,而对有效成分的积累有显著的促进作用。因此水分条件是影响桔梗生长发育的重要因子之一;当土壤相对含水量在60%的条件下,桔梗的产量和质量兼顾。
To study the effect of water stress on the growth and component ingredients of Platycodon grandiflorum.By pot planting,weight changes of shoot and root,and component ingredients in different phase of growth and development of two-year-old plant of Platycodon grandiflorum were measured at 3 different soil water gradients of 40%,60%,80%,respectively.Result showed that worsening of water stress,the shoot and root were restrained especially to up the shoot and improved the accumulation of effective component significantly.Water condition was an important factor affecting the growth and development of Platycodon grandiflorum.With the relative water content at 60% in soil,it benefits both yield and quality of Platycodon grandiflorum.
出处
《陕西林业科技》
2010年第1期5-8,共4页
Shaanxi Forest Science and Technology
基金
陕西省科学院青年人才培养专项(2005K-21)
关键词
水分胁迫
桔梗
生长发育
有效成分
Water stress
Platycodon grandiflorum
growth and development
effective component
