in order to study the effects of different sowing dates on yield potential of cumin ecotypes and to appoint the best sowing dates of cumin at kerman, the present experiment was performed base on rcbd with split plot arrangement and 3 replications during growing season of 2011-2012. different sowing dates (25th december, 9th january, 24th january, 8th february and 23th february) as main plot, an...

Investigation of Some Physiological Traits in Dracocephalum Moldavica L. Ecotypes under Salt Stress Condition

in order to investigate the absorption and translocation of glyphosate and 2,4-d during various stages of growth in swallow-worts weed populations, this study was carried out in 2010 at the iranian agricultural, medical and industerial research institute of atomic energy organization. treatments used in this study included three different stages of growth, four weed ecotypes of swallow-worts, a...

Chromosomal inversions have long been recognized for their role in local adaptation. By suppressing recombination heterozygous individuals, they can maintain coadapted gene complexes and protect them from homogenizing effects of flow. However, to fully understand importance adaptation we need know influence on phenotypes under divergent selection. For this, the marine snail Littorina saxatilis ...

ajowan is one of the endemic plants in khorasan province, and there is a little information on its tolerance to cold stress. in order to study freezing tolerance of ajowan, an experiment was conducted in faculty of agriculture, ferdowsi university of mashhad, based on factorial-completely randomized design with three replications and three ecotypes of ajowan (neishabour, birjand and torbat-e-he...

Despite recent development in producing chemical medicines, associated side effects have led to increased use of medicinal plants and natural compounds. Soil salinity, especially in arid and semi-arid regions, is a serious threat to global agriculture. Nowadays, efforts have been made to find benchmarks that can effectively select salt-tolerant or salt-resistant genotypes. In this regard, the u...

The cyanobacterium Prochlorococcus is the most abundant photosynthetic cell on Earth and contributes to global ocean carbon cycling food webs. known for its extensive diversity that falls into two groups of ecotypes, low-light (LL) high-light (HL) adapted ecotypes. Previous work has shown niche partitioning very HL ecotypes subecotypes across oceanographic gradients including temperature, nutri...

Morphologically cryptic taxa must be accounted for when quantifying biodiversity and implementing effective conservation measures. Some orchids pollinated by sexual deception of male insects contain morphologically ecotypes, such as the warty hammer orchid Drakaea livida (Orchidaceae). This species is comprised three pollination which can distinguished based on differences in pollinator floral ...

in order to evaluate the quantitative and qualitative forage characteristics of different sainfoin ecotypes, a field experiment was conducted in a randomized complete block design (rcbd) with three replications at the research station of agricultural college of shahrekord university. in this experiment, the amount of wet and dry weight of above-ground plants, plant height, and the protein and f...