
Authors: K. Elmeer and I. Mattat
The genetic diversity in the date palm germplasm of 59 female accessions representing 12 cultivars from different locations in Qatar was investigated using 14 loci of simple-sequence repeat (SSR) primers. A total of 94 alleles, with a mean of 6.7 alleles per locus, were scored. The number of alleles per locus varied from 3 (primer mPdCIR090) to 11.. Read More»
Authors: Y. Wang, P.Y. Fong, F.C.C. Leung, W. Mak and P.C. Sham
The human genome has linkage disequilibrium (LD) blocks, within which single-nucleotide polymorphisms show strong association with each other. We examined data from the International HapMap Project to define LD blocks and to detect DNA sequence features inside of them. We used permutation tests to determine the empirical signi.. Read More»
Authors: K.J. Sa, J.Y. Park, S.H. Choi, B.W. Kim, K.J. Park and J.K. Lee
Understanding genetic diversity, population structure, and linkage disequilibrium is a prerequisite for the association mapping of complex traits in a target population. In this study, the genetic diversity and population structure of 40 waxy and 40 normal inbred maize lines were investigated using 10 morphological traits and 200 simple sequence repeat (S.. Read More»
Authors: X.D. Zhang, H.H. Wang, C.X. Zhang, Q.H. Li, X.H. Chen and L.F. Lou
This study evaluated the effects of the autosomal dominant Fm gene in conjunction with the sex-linked Id gene on skin color and related gene expression. Ten Dongxiang black cocks were selected to build ten families by mating 60 individuals of ISA B-line layers. The skin color of the F1 generation was observed at different time points. At 126 days, 36 chic.. Read More»
Authors: S. Ghafoor, M.M. Shah, H. Ahmad, Z.A. Swati, S.H. Shah, A. Pervez and U. Farooq
Ephedra, also known as “ma huang”, is a dioecious, drought- and frost-resistant, perennial, evergreen shrub with compelling medicinal value. The genus is represented by 42 species around the world, 9 of which were provisionally reported from Pakistan. Species of the genus have a controversial taxonomy due to their .. Read More»
Authors: Campos SRC, Rieger TT and Santos JF
The drosophilid Zaprionus indianus due to its economical importance as an insect pest in Brazil deserves more investigation into its genetics. Its mitotic karyotype and a line-drawing map of its polytene chromosomes are already available. This paper presents a photomap of Z. indianus polytene chromosomes, which was used as the.. Read More»
Authors: X. Cao, Z. Wu, R. Zhou, F.L. Jiang and Z.E. Yang
Cultivar identification diagrams (CIDs) provide a rapid and efficient approach for identifying cultivars based on random amplified polymorphic DNA (RAPD) markers. In this paper, 64 tomato cultivars were identified using a CID. Using RAPD profiles, clustering analysis was performed to analyze genetic diversity. The results showed that 8 RAPD primers could .. Read More»
Authors: Y.M. Xie, L. Jin, X.J. Chen, M.N. He, Y. Wang, R. Liu, M.Z. Li and X.W. Li
Mitochondrial DNA (mtDNA) content is dependent on the energy requirements of tissues. To date, no comprehensive study has been conducted to examine mtDNA copy number variations in pigs. In the current study, quantitative polymerase chain reaction was performed to quantify the mtDNA copy number in 15 pig tissue types at 5 growth stages from embryo to adult.. Read More»
Authors: X.D. Ren, H.M. Liu, Y.H. Liu, Y.F. Hu, J.J. Zhang and Y.B. Huang
Starch is the major storage product in the endosperm of cereals. Its synthesis is closely related to sucrose metabolism. In our previous study, we found that the expression of most of the genes involved in starch synthesis might be regulated by sugars and hormones in the maize endosperm. However, little is known regarding the transcriptional regulation of.. Read More»
Authors: V.A. Fuzinatto, M.S. Pagliarini and C.B. Valle
Three sexual interspecific hybrids of Brachiaria (HBGC076, HBGC009, and HBGC014) resulting from crosses between B. ruziziensis (female genitor) and B. decumbens and B. brizantha (male genitors) produced by Embrapa Beef Cattle in the 1980s were cytologically analyzed by conventional methods for meiotic studies. The cytogenetic .. Read More»