نتایج جستجو برای: 9 plant traits including life form
تعداد نتایج: 2932083 فیلتر نتایج به سال:
abstract this research was conducted in hamadan province for evaluation of potato cultivars reaction to cultivation date. this experiment was performed in split plot design based on randomized complete block in thee replication with two factors, containing, i. main plots are planting date including: 9 april, 25 april, 10may, 26may, 10 june, 26 june 2. and subplots are cultivar with three levels...
In approximately 3.2% of bird species individuals regularly forgo the opportunity to breed independently and instead breed cooperatively with other conspeci¢cs, either as non-reproductive `helpers' or as co-breeders. The traditional explanation for cooperative breeding is that the opportunities for breeding independently are limited owing to peculiar features of the species' breeding ecology. H...
The Mojave Desert of North America has become fire-prone in recent decades due to invasive annual grasses that fuel wildfires following years of high rainfall. Perennial species are poorly adapted to fire in this system, and post-fire shifts in species composition have been substantial but variable across community types. To generalize across a range of conditions, we investigated whether simpl...
Epigenetic variation is likely to contribute to the phenotypic plasticity and adaptative capacity of plant species, and may be especially important for long-lived organisms with complex life cycles, including forest trees. Diverse environmental stresses and hybridization/polyploidization events can create reversible heritable epigenetic marks that can be transmitted to subsequent generations as...
genotypic variation is useful to breeders when selecting genotypes to improve particular traits. inorder to study of genetic diversity 20 genotypes of hordeum murynum studied in the form of randomized complete block design the experimental field of islamic azad university shahre rey branch with 3 replication in the year 2012. notes traits was conducted including days to heading, days to maturit...
in order to evaluate phenological and morphological responses of cold tolerant chickpea genotypes to entezary culture in mashhad conditions, 81 cold tolerant chickpea accessions were cultured during growing year 2006-2007 in research farm of faculty of agriculture, ferdowsi university of mashhad. the experiment was carried out in lattice design with three replications including 9 blocks per rep...
We investigated the effects of major environmental drivers associated with urbanization on species diversity and plant functional traits (PFTs) in the remnant subtropical evergreen broad-leaved forests in Metropolitan Guangzhou (Guangdong, China). Twenty environmental factors including topography, light, and soil properties were used to quantify the effects of urbanization. Vegetation data and ...
In order to study the effect of various amounts of nitrogen (N) and Iranian natural zeolite on the quantitative and qualitative forage yield of winter canola (Brassica napus L.) in light soil, a field experiment was conducted on research farm of Tarbiat Modares University, Tehran, during 2006-2007. Treatments were arranged in the form of RCBD with 3 replications. The experimental treatments wer...
this experiment was conducted, to study the effect of planting time and planting density on savory (satureja sahendica bornm.) in 2012 in alborz research station, research institute of forests and rangelands, karaj, iran. the experiment was carried out in split plot in time in the form of a randomized complete block design with three replicates. the main plots were planting times in two levels ...
The consequences of plant species loss are rarely assessed in a multi-trophic context and especially effects on life-history traits of organisms at higher trophic levels have remained largely unstudied. We used a grassland biodiversity experiment and measured the effects of two components of plant diversity, plant species richness and the presence of nitrogen-fixing legumes, on several life-his...
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