S.H. Kamphorst

Intraspecific variability of popcorn S7 lines for phosphorus efficiency in the soil

• I.F.S. Gerhardt
• A.T. Amaral Júnior
• L.J.M. Guimarães
• A. Santos
• S.H. Kamphorst
• V.J. Lima
• F.M. Poblete
• G.O. Myers

The expansion of agriculture, coupled with the need for sustainable cropping, is one of the greatest challenges of the scientific community working on the generation of new cultivars adapted to abiotic stress conditions. The aim of this study was to evaluate the variability of popcorn lines as to responsiveness and efficiency in phosphorus use, as a first step towar.. Read More»

Genet. Mol. Res. 16(3):

Inference of genetic diversity in popcorn S3 progenies

G.F. Pena, A.T. do Amaral Jr, R.M. Ribeiro, H.C.C. Ramos,M.S.B. Boechat, J.S. Santos, G.S. Mafra, S.H. Kamphorst, V.J. de Lima, M. Vivas and G.A. de Souza Filho

Molecular markers are a useful tool for identification of complementary heterotic groups in breeding programs aimed at the production of superior hybrids, particularly for crops such as popcorn in which heterotic groups are not well-defined. The objective of the present study was to analyze the genetic diversity of 47 genotypes of tropical popcorn to identify possib.. Read More»

Genet. Mol. Res. 15(2): gmr.15028456

DOI: 10.4238/gmr.15028456

Combining ability of S3 progenies for key agronomic traits in popcorn: comparison of testers in top-crosses

V.J. de Lima, A.T. do Amaral Junior, S.H. Kamphorst, G.F. Pena,J.T. Leite, K.F.M. Schmitt, C. Vittorazzi, J.E. de Almeida Filho and F. Mora

The successful development of hybrid cultivars depends on the reliability of estimated combining ability of the parent lines. The objectives of this study were to assess the combining ability of partially inbred S3 families of popcorn derived from the open-pollinated variety UENF 14, via top-crosses with four testers, and to compare the testers for their ability to .. Read More»

Genet. Mol. Res. 15(4): gmr15049319

DOI: 10.4238/gmr15049319

Multivariate approach in popcorn genotypes using the Ward-MLM strategy: morpho-agronomic analysis and incidence of Fusarium spp

R.N.F. Kurosawa, A.T. do Amaral Junior, F.H.L. Silva, A. dos Santos,M. Vivas, S.H. Kamphorst and G.F. Pena

The multivariate analyses are useful tools to estimate the genetic variability between accessions. In the breeding programs, the Ward-Modified Location Model (MLM) multivariate method has been a powerful strategy to quantify variability using quantitative and qualitative variables simultaneously. The present study was proposed in view of the dearth of information ab.. Read More»

Genet. Mol. Res. 16(1): gmr16019528

DOI: 10.4238/gmr16019528