
Authors: E.J. Oliveira, O.S. Oliveira Filho and V.S. Santos
We evaluated the genetic variation of cassava accessions based on qualitative (binomial and multicategorical) and quantitative traits (continuous). We characterized 95 accessions obtained from the Cassava Germplasm Bank of Embrapa Mandioca e Fruticultura; we evaluated these accessions for 13 continuous, 10 binary, and 25 multicategorical traits. First, we.. Read More»
Authors: L.L. Bhering, V.S. Junqueira, L.A. Peixoto, C.D. Cruz and B.G. Laviola
The aim of this study was to evaluate different methods used in genomic selection, and to verify those that select a higher proportion of individuals with superior genotypes. Thus, F2 populations of different sizes were simulated (100, 200, 500, and 1000 individuals) with 10 replications each. These consisted of 10 linkage groups (LG) of 100 cM each, cont.. Read More»
Authors: F.R. Hu, H.H. Liu, F. Wang, R.L. Bao and G.X. Liu
Karyotype analysis in plants helps to reveal the affinity relationships of species and their genetic evolution. The current study aimed to observe chromosome karyotypes and structures of Hyacinthus orientalis. Twenty hyacinth cultivars were introduced from Holland, and their water-cultivated root tips were used as experimental samples. A solution of colch.. Read More»
Authors: J.P. Zhou, C.H. Yao, E.N. Yang, M.Q. Yin, C. Liu1 and Z.L. Ren1,
In this study, a new disomic addition line, 12-5-2, with 44 chromosomes that was derived from BC3F2 descendants of the hybridization between Triticum aestivum cv. CN19 and Aegilops biuncialis was created and reported. 12-5-2 was immune to both powdery mildew and stripe rust and has stable fertility. Fluorescence in situ hybrid.. Read More»
Authors: Y.D. Sun Y. Liang J.M. Wu Y.Z. Li X. Cui L. Qin
Fruit lycopene content and total soluble solid content are important factors determining fruit quality of tomatoes; however, the dynamic quantitative trait loci (QTL) controlling lycopene and soluble solid content have not been well studied. We mapped the chromosomal regions controlling these traits in different periods in F2:3 families derived from a cross .. Read More»
Authors: T.-Y. Hsieh, T.-Y. Shiu, N.-F. Chu, T.-Y. Chao, H.-C. Chu,W.-K. Chang, Y.-C. Chao and H.-H. Huang
Gilbert’s syndrome is suspected in patients with unconjugated hyperbilirubinemia caused by decreased activity of the UDP-glucuronosyltransferase 1A1 (UGT1A1) gene in the absence of abnormal liver function and hemolysis. The major genetic variants underlying Gilbert’s syndrome are TATA-box repeats of the promoter re.. Read More»
Authors: Lucena BTL, Silva-Filho EA, Coimbra MRM, Morais JOF, Simoes DA and Morais Jr. MA
Industrial ethanol fermentation is a complex microbiological process to which yeast cells must adapt for survival. One of the mechanisms for adaptation is thought to involve chromosome rearrangements. We found that changes in chromosome banding patterns measured by pulsed-field gel electrophoresis can also be produced in labor.. Read More»
Authors: N.F. Cantelmo1, R.G. Von Pinho2 and M. Balestre3
The main objective of a maize breeding program is to generate hybrid combinations that are more productive than those pre-existing in the market. However, the number of parents, and consequently the number of crosses, increases so rapidly that the phenotypic evaluation of all the possible combinations becomes economically and technically infeasible. In th.. Read More»
Authors: P.A. Moreira S.A.S. Sousa F.A. Oliveira N.H. Ara�ºjo G.W. Fernandes D.A. Oliveira
Transfer of molecular markers is widely used in conservation genetic studies. We investigated the transferability of simple sequence repeat (SSR) markers developed for Enterolobium cyclocarpum to E. contortisiliquum, a tropical tree widely distributed in dry forests. A set of 9 evaluated SSR markers were amplified in E. contortisiliquum and the degree of .. Read More»
Authors: Li JT, Yang J, Chen DC, Zhang XL and Tang ZS
In order to investigate the mutation characteristics and to further examine the genetic variation of mutant sunflower (Helianthus annuus) obtained in plants grown from seeds exposed to space conditions, only the mature tissues such as leaf and flower could be used for DNA extraction after mutation characteristics were confirme.. Read More»