نتایج جستجو برای: hybrid sunflower

تعداد نتایج: 198490  

Journal: :Molecular ecology 2006
J R Ellis C H Pashley J M Burke D E McCauley

Determining the genetic structure of isolated or fragmented species is of critical importance when planning a suitable conservation strategy. In this study, we use nuclear and chloroplast SSRs (simple sequence repeats) to investigate the population genetics of an extremely rare sunflower, Helianthus verticillatus Small, which is known from only three locations in North America. We investigated ...

2008
Juchen Guo F. Joseph Schork J. Guo F. J. Schork

Acrylate–alkyd hybrid latex via miniemulsion polymerizations show promise as water-borne coating systems. However, poor homogeneity of the particles caused by the immiscibility of the alkyd in polyacrylate limits monomer conversion and film formation. To resolve this problem, the hybrid miniemulsion polymerization of acrylate in the presence of linoleic acid and sunflower seed oil was carried o...

Genetic diversity estimation of plant materials is one of the important pre-breeding activities in breeding field crops. Twenty-one microsatellite markers used to assess genetic diversity and relationship of 68 sunflower genotypes (Helianthus annuus L.). All of 21 pairs of SSR (Simple Sequence Repeats) markers produced a total number of 49 polymorphic bands. DNA fragments ranged from 9...

ژورنال: علوم آب و خاک 2006
انوشیروان فروزنده شهرکی, , محمدرضا خواجه‌پور, ,

Under irrigation and in double-cropping system, a large amount of plant residue remains after harvest that along with the limited time for residue decomposition and complete seedbed preparation, necessitates reduced tillage and special residue management. In the present study, the effects of various seedbed preparation methods on vegetative growth, yield components and seed and oil yields of su...

Ahmad Tobeh Gorban Didehbaz Mahrokh Bolandi Amoughein,

 In order to evaluate the effects of cover crops on reduced weed biomass in hybrid sunflower an experiment was carried in the research stations, Natural Resources Medicinal Plants (Samian_Ardabile) with 3 replicates in 1390-1391. The first factor was considered three type of cover crops, winter rye, spring barley, winter wheat with 2 control treatment, second factor was mulch management at two ...

Journal: :Proceedings of the National Academy of Sciences 2006

2011
Takeshi Kawakami Preeti Dhakal Angela N. Katterhenry Chelsea A. Heatherington Mark C. Ungerer

Hybridization is a natural phenomenon that has been linked in several organismal groups to transposable element derepression and copy number amplification. A noteworthy example involves three diploid annual sunflower species from North America that have arisen via ancient hybridization between the same two parental taxa, Helianthus annuus and H. petiolaris. The genomes of the hybrid species hav...

Journal: :Journal of Agricultural Sciences, Belgrade 2010

Journal: :Scientific Papers of the Institute of Bioenergy Crops and Sugar Beet 2020

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