
Authors: E.J. Oliveira, C.F. Ferreira, V.S. Santos and G.A.F. Oliveira
Single nucleotide polymorphism (SNP) markers were used in the largest cassava (Manihot esculenta Crantz) germplasm collection from Brazil to develop core collections based on the maximization strategy. Subsets with 61, 64, 84, 128, 256, and 384 cassava accessions were selected and named PoHEU, MST64, PoRAN, MST128, MS.. Read More»
Authors: Y. Wang, J.F. Wang, H. Yin, H.Q. Gao, N.S. Zhuang and J.P. Liu
Physical localization of molecular markers and assignment of the 15th linkage group to chromosome 11 of the karyotype in cassava (Manihot esculenta Crantz) were achieved using primed in situ labeling. Amplified signals for both the EST507-1 and SSRY13-5 markers were consistently observed in different stages of cell division. A comparison of the length, ar.. Read More»
Authors: E.J. Oliveira, F.A. Santana, L.A. Oliveira and V.S. Santos
The aim of this study was to estimate the genetic parameters and predict the genotypic values of root quality traits in cassava (Manihot esculenta Crantz) using restricted maximum likelihood (REML) and best linear unbiased prediction (BLUP). A total of 471 cassava accessions were evaluated over two years of cultivatio.. Read More»
Authors: L.M. Vasconcelos, A.C. Brito, C.D. Carmo and E.J. Oliveira
The distribution and frequency of single nucleotide polymorphisms (SNPs) can help to understand changes associated with characteristics of interest. We aimed to evaluate nucleotide diversity in six genes involved in starch biosynthesis in cassava using a panel of 96 unrelated accessions. The genes were sequenced, aligned, and .. Read More»
Authors: A.V. Tiago, A.A.B. Rossi, P.V. Tiago, A.A. Carpejani, B.M. Silva, E.S.S. Hoogerheide and O.M. Yamashita
Brazil is considered one of the domestication centers of cassava (Manihot esculenta), containing a large part of the biological diversity and traditional knowledge of the species. The aim of the present study was to evaluate the genetic diversity of cassava landraces grown by farmers in the north of Mato Grosso State, Brazil, .. Read More»
Authors: M.T. Venturini, L.R. Santos, C.I.A. Vildoso, V.S. Santos and E.J. Oliveira
Tolerant varieties can effectively control post-harvest physiological deterioration (PPD) of cassava, although knowledge on the genetic variability and inheritance of this trait is needed. The objective of this study was to estimate genetic parameters and identify sources of tolerance to PPD and their stability in cassava acce.. Read More»
Authors: M. de J. da S. de Carvalho, V.B. Gomes, A. da S. Souza, F.F. Aud, J.A. Santos-Serejo and E.J. Oliveira
Polyploid induction has been used for plant breeding to produce bigger and more robust plants than diploid types. The present study aimed to develop a methodology for in vitro induction of polyploidy in cassava. Apical and lateral microcuttings from the BRS Formosa variety were treated with six oryzalin concentrations for 24 and 48 h. The same methodology.. Read More»
Authors: N.M.A. Nassar
Controlled and natural hybridization between cassava and wild relatives does occur. Barriers within the genus appear to be weak due to recent evolution of the group. All Manihot species examined cytogenetically have a chromosome number of 2n = 36. However, they behave meiotically as diploids. The weak interspecific barriers ha.. Read More»
Authors: N.M.A. Nassar
Central Brasil is one of the four centers of diversity of Manihot species. Of 26 wild Manihot species reported to occur in this region, 20 were collected from two limited areas, each less than 100 km in diameter. These two areas are Goiás Velho and Corumbá de Goiás. Considering the Harlan concept of geogra.. Read More»