Authors: N. Ercelen, E. Turtar, M. Gultomruk, H. Comert, H. Coskun, R. Mercan and A. Nuhoglu
Preimplantation genetic diagnosis is a preventive approach for identifying genetic abnormalities in early stages of reproduction. We used preimplantation genetic aneuploidy screening in 230 cycles of patients with indications of advanced maternal age, recurrent implantation failure, recurrent spontaneous abortions, or severe m.. Read More»
Authors: E.N. Yang, Z.J. Yang, J.F. Zhang, Y.C. Zou and Z.L. Ren
Leaf rolling occurs in some cereal genotypes in response to drought. We identified and made a phenotypic, cytological and physiological analysis of a leaf-rolling genotype (CMH83) of hexaploid triticale (X Triticosecale Wittmack) that exhibited reduced plant height, rolled and narrow leaves. Gliadin electrophoresis of seed pro.. Read More»
Authors: L.-L. Li, Y. Dong, R.-X. Wang, N. An, X. Yun and R.-Z. Liu
A reciprocal translocation between the short arm of chromosome 1 and the long arm of chromosome 3 was observed in a pedigree of three carriers (proband, and his brother and mother). In this study, the three carriers had different clinical manifestations: the proband with infertility, his brother with spousal miscarriages, and his mother with no adverse re.. Read More»
Authors: H.Y. Yang, X.W. Xia, W. Fang, Y. Fu, M.M. An and M.B. Zhou
Spontaneous leaf color variation in bamboo provides the opportunity to study the mechanisms of leaf color formation and the breeding of ornamental bamboos. Despite the fact that many genes are known to be involved in leaf color variation in model plants, molecular mechanisms governing natural leaf color variation in bamboo hav.. Read More»
Authors: G.C.L. Ricci, M.S. Pagliarini and C.B. Valle
Polyploidy is a prominent and significant force in plant evolution, taking place since ancient times and continuing until today. Recent cytogenetic studies in the genus Brachiaria using germplasm collected from wild African savannas in the 1980s revealed that most species and accessions within species are polyploid. Diploid, t.. Read More»
Authors: L.B. Minasi, I.P. Pinto, J.G. de Almeida, A.V. de Melo,D.M.C. Cunha, C.L. Ribeiro, G.P. Silva, M.G. Brasil, D.M. Silva, C.C. da Silva and A.D. da Cruz
We describe the first postnatal diagnosis of a child from Central Brazil with de novo cytogenetic alterations in 13q showing malformations of the brain, eyes, distal limbs, and genitourinary tract, and severe intellectual disability. The karyotype was a constitutive 46,XX,r(13)[77]/45,XX,-13[17]/46,XX,idic r(13)[6]. Interphase and metaphase fluorescence i.. Read More»
Authors: C.Y. Ng, R. Wickneswari and C.Y. Choong
Calamus palustris Griff. is an economically important dioecious rattan species in Southeast Asia. However, dioecy and onset of flowering at 3-4 years old render uncertainties in desired female:male seedling ratios to establish a productive seed orchard for this rattan species. We constructed a subtractive library for .. Read More»
Authors: W. Ji, Z.-Q. Li, Q. Zhou, W.-K. Yao and Y.-J. Wang
This project aimed at breeding new seedless grape cultivars by embryo rescue through three hybridization methods: 1) using cross-breeding between seedless Vitis vinifera cultivars and wild Chinese Vitis spp; 2) crossing with two seedless cultivars, and 3) hybridization between grapes of different ploidy. Genotype, sampling times, and media were confirmed .. Read More»
Authors: C. Risso-Pascotto, M.S. Pagliarini and C.B. Valle
Microsporogenesis was analyzed in five accessions of Brachiaria dictyoneura presenting x = 6 as the basic chromosome number. All accessions were tetraploid (2n = 4x = 24) with chromosome pairing in bi-, tri-, and quadrivalents. The recorded meiotic abnormalities were those typical of polyploids, including precocious chromosome.. Read More»
Authors: P.R.L. Moreira and E. Morielle-Versute
Random amplified polymorphic DNA molecular marker was utilized as a means of analyzing genetic variability in seven bat species: Molossus molossus, M. rufus, Eumops glaucinus, E. perotis, Myotis nigricans, Eptesicus furinalis, and Artibeus planirostris. The determination of genetic diversity was based on 741 bands produced by .. Read More»