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Ali Pourkhaloee,Morteza Khosh-Khui,Paul Arens,Hassan Salehi,Hooman Razi,Ali Niazi,Alireza Afsharifar,Jaap van Tuyl 한국원예학회 2018 Horticulture, Environment, and Biotechnology Vol.59 No.6
Tulip ( Tulipa L.) is one of the most important ornamental geophytes in the world. Analysis of molecular variability of tulipsis of great importance in conservation and parental lines selection in breeding programs. Of the 70 genic microsatellites, 15highly polymorphic and reproducible markers were used to assess the genetic diversity, structure, and relationships among280 individuals of 36 wild and cultivated tulip accessions from two countries: Iran and the Netherlands. The mean valuesof gene diversity and polymorphism information content were 0.69 and 0.66, respectively, which indicated the high discriminatorypower of markers. The calculated genetic diversity parameters were found to be the highest in wild T . systolaStapf (Derak region). Bayesian model-based STRU CTU RE analysis detected fi ve gene pools for 36 germplasms whichcorresponded with morphological observations and traditional classifi cations. Based on analysis of molecular variance, toconserve wild genetic resources in some geographical locations, sampling should be performed from distant locations toachieve high diversity. The unweighted pair group method with arithmetic mean dendrogram and principal component analysisplot indicated that among wild tulips, T . systola and T . micheliana Hoog exhibited the closest relationships with cultivatedtulips. Thus, it can be assumed that wild tulips from Iran and perhaps other Middle East countries played a role in the originof T . gesneriana , which is likely a tulip species hybrid of unclear origin. In conclusion, due to the high genetic variabilityof wild tulips, they can be used in tulip breeding programs as a source of useful alleles related to resistance against stresses.
Analysis of the mode of inheritance in Chrysanthemum morifolium Ramat. using SSR markers
Sang Kun Park,Hak Ki Shin,Danny Esselink,Paul Arens 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
Most of cultivated chrysanthemums (Chrysanthemum morifolium Ramat.) have been found to be polyaneuploid with hexaploid, 2n=6x=54, predominant. Cytological studies has shown that bivalent were normally formed and multivalent were rare during meiosis. These meiotic behavior reflected that the chromosome of chrysanthemum paired with its homologue preferentially and diploid-like inheritance was occurring. However, several genetic researches was in contrast to this hypothesis, based on the results of genetic analysis. Therefore, it is important to determine whether the mode of inheritance in chrysanthemum is disomic (selective pairing) or hexasomic (random pairing). ‘Dancer’ and ‘Puma White’, and their 94 crossing progenies were genotyped using 84 SSR primers. Alleles of each SSR locus were determined by length of PCR product with fluorescently labeled primers using ABI 3730 DNA Analyzer and GeneMapper 3.0 software (Applied Biosystems). A total of 210 types of alleles were detected in 49 SSR loci (4.29 allele types/locus). The observed segregation ratio of these alleles for 94 crossing progenies showed better fits to hexasomic than disomic. Moreover, based on the genotyping results, the genotypes of ‘Dancer’ and ‘Puma White’ were analyzed as BCDEFF and AACEEE in ChSSR-61 locus, respectively. And the genotypes of PD-33 and PD-51 were analyzed as ABDEEF and ABDEEF, respectively. It means that BDF alleles of PD-33 and BEE alleles of PD-51 were given from ‘Dancer’. If the chromosome is paired preferentially, the B allele would pair with C allele, D with E, and F with E at this locus of ‘Dancer’. But it was found PD-75 as AADEEF without B and C alleles. This is a clear evidence that the mode of inheritance in chrysanthemum is not disomic but hexasomic.
Heejin Han,Chungyoon Chun,Yoorim Choi,John Goins,Hui Zhang,Edward Arens 한국생활환경학회 2013 한국생활환경학회지 Vol.20 No.6
The purpose of this study is to find building and psychological variables which affect occupants" IEQ (Indoor environment quality) satisfaction in office buildings. The results showed that (1) occupants" IEQ satisfaction increased with behavior adjustability, satisfaction with interior design, and level of ensuring privacy. (2) Occupants" satisfaction with each physical condition (thermal, noise, lighting, indoor air quality) decreased when building scale is too large. Building scale also had a significant effect on behavior adjustability. (3) The linear relationship between all psychological variables and IEQ satisfaction was proved. (4) As IEQ satisfaction (thermal, noise, lighting, indoor air quality) increased, overall workspace satisfaction did also increase. Especially, among four IEQ satisfactions, noise satisfaction was the most effective factor on overall workspace satisfaction.
Development of the ASHRAE Global Thermal Comfort Database II
Fö,ldvá,ry Lič,ina, Veronika,Cheung, Toby,Zhang, Hui,de Dear, Richard,Parkinson, Thomas,Arens, Edward,Chun, Chungyoon,Schiavon, Stefano,Luo, Maohui,Brager, Gail,Li, Peixian,Kaam, Soazig Elsevier 2018 Building and environment Vol.142 No.-
<P><B>Abstract</B></P> <P>Recognizing the value of open-source research databases in advancing the art and science of HVAC, in 2014 the ASHRAE Global Thermal Comfort Database II project was launched under the leadership of University of California at Berkeley's Center for the Built Environment and The University of Sydney's Indoor Environmental Quality (IEQ) Laboratory. The exercise began with a systematic collection and harmonization of raw data from the last two decades of thermal comfort field studies around the world. The ASHRAE Global Thermal Comfort Database II (Comfort Database), now an online, open-source database, includes approximately 81,846 complete sets of objective indoor climatic observations with accompanying “<I>right-here-right-now</I>” subjective evaluations by the building occupants who were exposed to them. The database is intended to support diverse inquiries about thermal comfort in field settings. A simple web-based interface to the database enables filtering on multiple criteria, including building typology, occupancy type, subjects' demographic variables, subjective thermal comfort states, indoor thermal environmental criteria, calculated comfort indices, environmental control criteria and outdoor meteorological information. Furthermore, a web-based interactive thermal comfort visualization tool has been developed that allows end-users to quickly and interactively explore the data.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The scope, development, contents, and accessibility of the Comfort Database is documented. </LI> <LI> The Comfort Database II includes approximately 76,000 complete sets of thermal comfort data. </LI> <LI> The Comfort Database provides access to the collected raw data. </LI> <LI> Web-based interactive visualization tool was developed that allows end-users to interactively explore the data. </LI> </UL> </P>