پديد آورندگان :
عصاره، محمد حسن تهران - سازمان تحقيقات،آموزس و ترويج كشاورزي - موسسه تحقيقات جنگلها و مراتع كشور , عباس زاده، بهلول تهران - سازمان تحقيقات،آموزش و ترويج كشاورزي - موسسه تحقيقات جنگلها و مراتع كشور , لايق حقيقي، معصومه تهران - سازمان تحقيقات، آموزش و ترويج كشاورزي - موسسه تحقيقات جنگلها و مراتع كشور
كليدواژه :
گياه دارويي , اكوتيپ (بومجور) , ساقه‌چه , ريشه‌چه
چكيده لاتين :
Despite the harsh and fragile ecological conditions in saline regions (Jafarian et al., 2009), There
are plants that can tolerate these conditions and, for the production of food, pharmaceutical and forage in saline
lands are suitable (Abbaszadeh, 2011). Must with the discovery of aspects and potential benefits in the salinity
lands, we must move towards environmentally sustainable use and, in this regard, medicinal and grassland plants
such as Artemisia sieberi can be among the suitable plants in this case.
Materials and methods: In order to evaluate the germination characteristics of Artemisia sieberiBesser., seeds
were collected from Ghom, Karaj and Tehran and an experiment was conducted in the laboratory of the
Research Institute of Forests and Rangelands, Tehran, Iran, during 2011. The experiment was done as factorial
layout based on a randomized complete block design with three replications. Treatments included three
populations (such as Ghom, Karaj and Tehran), three temperatures (including 10, 25 and 30oC) and four salinity
stress levels (such as 0, 100, 200 and 300 mM, induced by NaCl). Characteristics measured included germination
percentage, germination speed, plumule length, radicle length, ratio of radicle length/ plumule length and
Longley seed vigour index.
Results and discussion: Results of mean comparison of population × temperature indicated that the highest
germination percentage was achieved in Ghom × 10oC and (35.58%) the maximum plumule length was
observed in Tehran × 10oC (1.23 cm). In the interaction of population × salinity, the highest germination
percentage was achieved in Tehran × 0 mM (68.66%) and the maximum plumule length was achieved in Ghom
× 0 mM (3.52 cm). In the interaction of temperature × salinity, the highest germination percentage was achieved
at 25oC × 0 mM (60.55%) and the highest plumule length was achieved at 30oC × 0 mM (2.48 cm).
Conclusion: The results showed that different populations of sagebrush (Artemisia sieberiBesser) had different
responses to different levels of salinity and temperatures. The main cause of these differences could be due to
the effect of habitat on the mother plants in the years, habitat soil conditions, habitat climate conditions in the
seed collection and filling stages and the maturity of the seeds. Due to differences between the populations used
in the study, more than 10 % germination and climate variability Iran, it seems that investigation of more
populations can, in addition to identifying those tolerant to salinity, identify plants with different qualities suited
for medicinal uses and rangelands. Generally, the suitable temperature was 25 ° C and, despite salinity tolerance
by Artemisia sieberi Besser, the highest percentage of germination occurred under non-stress conditions. These
results indicated that Artemisia sieberiBesser is not an obligata Halophyte plant. It also concluded that the effect
of temperature and salinity combined and, so it seems, the management of salt-affected land cultivation in
addition to plants’ resistance to salinity, of tolerant plants with a relatively short growing season or cold tolerant
plants can be exploited. It was found that plant in the cooler weather conditions at the beginning and end of
growing seasons (spring and autumn), plants could easily finish their life cycle. According to the extended
natural habitat of Artemisia sieberiBesser in different habitats of the country and the medicinal and grasslands value of this plant we could assert that, as a result of this research, Artemisia sieberi Besser is one of the plants
with a high potential , and a that it merits applied research and complete studies to recommend this species.
