Atmospheric CO2 and tropospheric O3 are rising in many regions of the world. Little is known about how these two commonly co-occurring gases will affect reproductive fitness of important forest tree species. Here, we report on the long-term effects of CO2 and O3 for paper birch seedlings exposed for nearly their entire life history at the Aspen FACE (Free Air Carbon Dioxide Enrichment) site in ...

to investigate variation and detect of genomic regions controlling quality and quantity of malt extract in barely, a study was conducted using a set of 72 double haploid barley lines as well as their parents (stepto & morex) at experimental stations of university of mahabad and agricultural research center of mian'doab in rcbd with two replications during cropping season (2011-12). differe...

ABSTRACT Erythrina velutina Willd. (Fabaceae) is drought tolerant and has the potential for reforestation in semi-arid region. The response of its seeds to environmental conditions each production area influences their size, weight, physiological potential, health. Thus, this study aimed assess how different regions Paraíba influence biometric characteristics E. seeds. Seeds from 19 mother plan...

Specific morphological and biochemical characteristics of seeds can cause oxygen deficiency within maternal and embryonic tissues. In this study, optical sensors were used to measure O(2) profiles across developing seeds of Vicia faba and Pisum sativum and developmental and environmental modulations of internal O(2) levels were studied. In addition, the metabolic state of developing embryos was...

Backgraund: The presence or absence of fungi on the seed surface is an important aspect that determines quality seeds. Since data Fusarium spp. and other seed-borne pathogens vegetable pea in Serbia are scarce, aim this study was to isolate identify disease-causing from infected seed. Methods: Colony morphology microscopic characters isolated species were recorded cultures grown PDA CLA, respec...

in order to evaluate the genetic diversity some native populations of parsley iran, 21 parsley populations which collected from different regions of iran and cultured as an augmented design in shahid chamran university of ahvaz. in 2011-12. some of morphological characteristics including (time of emergence, plant height, fresh and dry weight, seed weight, chlorophyll content) and anti oxidant p...

In the polymorphic harvester ant Messor barbarus, the colony modulates response during foraging according to seed characteristics. The easiness of picking up small seeds (oat fragments or canary seeds) shortens the time lapse between food discovery and the return of scouts to the nest, favouring the onset of recruitment and higher mobilisation rates than bigger seeds (whole oat). However, size ...