Allelopathic effects of Artemisia aucheri on seed germination properties of Festuca arundinacea Schreb and Dactylis glomerata

Subject Areas : Journal of Plant Ecophysiology

P. Gholami ¹ , J. Ghorbani ² , Sh. Ghaderi ³

1 - دانش آموخته کارشناسی ارشد مرتعداری، گروه مرتع و آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
2 - استادیار گروه مرتع و آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
3 - دانش آموخته کارشناسی ارشد مرتعداری، گروه مرتع و آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری

Received: 2014-06-17 Accepted : 2014-06-17 Published : 2011-08-01

Keywords:

Abstract :

    Allelopathic compounds display an important role in biodiversity, stability and ability of ecosystems production. This phenomenon that has not been considered in range improvement is of important concerns in restoration of rangelands. Artemisia aucheri due to having chemical properties may contain allelochemical components. In this study, allelopathic effect of mentioned species was tested on Festuca arundinacea and Dactylis glomerata of seed germination. To do so, aerial part powder of Artemisia aucheri (stem, leaf and seed) collected from habitats in flowering stage (end of November). Also a control treatment (distilled water) was used. A completely randomised design was carried out using six treatments and four replications in laboratory. Results showed a significant effect of aqueous extract of Artemisia aucheri on seed germination indices. The percentage of germination, seed germination rate and plumule and radicle length, and seed vigor of Festuca arundinacea, and Dactylis glomerata significantly reduced under aqueous extract of Artemisia aucheri. ishing plants in stage six branches drought stress treatments were applied. Results showed that different levels of drought stress reduced shoot and root dry weight, plant height and Essential oil yield but percentage of Essential oil significantly increased. Use of 28- Homobrassinolid improved, dry weight root and shoot, Essential oil yield and percentage of Essential oil under mild stress and high stress condition treatment.As a result,  plants treating with Article 28 - Homobrassinolid percent significantly increased oil yield and the damage caused by the deficit irrigation stress  reduced.   n plant is reducing the silt. The highest seed yield factor influencing plant nitrogen-phosphorus soils is So that the reduction of nitrogen and phosphorus on plant-soil interactions. Therefore it is concluded that different plants react differently to changes in soil properties and can be represented as a habitat for forage quality.