Abstract A seed and flower color marker (P), nine protein, isozyme 224 restriction fragment length polymorphism loci were used to construct a linkage map of the common bean, Phaseolus vulgaris L. (n = 11). The mapping population consisted backcross progeny between Mesoamerican breeding line 'XR-235-1-1' Andean cultivar 'Calima'; former was as recurrent parent. bean PstI genomic library enriched for single copy sequences (95%) source DNA probes. Sixty percent probes tested detected...

Genomic Selection (GS) has allowed the maximization of genetic gains per unit time in several annual and perennial plant species. However, no GS studies have addressed Coffea arabica, most economically important species genus Coffea. Therefore, this study aimed (i) to evaluate applicability accuracy prediction genomic estimated breeding value; (ii) estimate parameters; (iii) reduction selection cycle by Arabica coffee breeding. A total 195 individuals, belonging 13 families generation F2,...

Abstract The I locus of the common bean, Phaseolus vulgaris, controls development four different phenotypes in response to inoculation with Bean mosaic virus, necrosis several other related potyviruses, and one comovirus. We have generated a high-resolution linkage map around this aligned it physical constructed BAC clones. These clones were obtained from library cultivar “Sprite,” which carries dominant allele at locus. identified large cluster TIR–NBS–LRR sequences associated within locus,...

ABSTRACT Specialty coffees can be differentiated in various ways, including the environmental conditions which they are produced and sensory composition of drink. This study aimed to evaluate effect altitude, slope exposure fruit color on attributes cafes region Matas de Minas. Sampling points were georeferenced four altitude ranges (< 700 m; ≤ x 825 m, < 950 m ≥ m) coffee crop; two colors var. Catuaí (yellow red); exposures (North-facing South-facing). Coffee at cherry stage processed...

The root-knot nematode Meloidogyne exigua is a parasite which attacks the Arabica coffee tree (Coffea sp.) and its eradication from infested areas practically impossible. wide dissemination of this across plantations in south state Minas Gerais has been causing great damage to producers area. Previous studies showed that simple inheritance gene present C. canephora, designated Mex-1, controls M. resistance. Some genetic breeding programs have developed resistant lines through introgression...

This work aimed to characterize accessions that represent the C. canephora germplasm conserved and cultivated in Brazil. A total of 130 from banks IAC (São Paulo), UFV (Minas Gerais) also collected plantations State Espírito Santo Rondônia were evaluated with a set 20 new microsatellite primers. Multivariate methods used estimate relationship among accessions. High level polymorphism two major diversity clusters identified. First cluster was composed by collections second formed areas under...

Over the past three decades, molecular marker studies reached extraordinary advances, especially for sequencing and bioinformatics techniques. Marker-assisted selection became part of breeding program routines important seed companies, in order to accelerate optimize cultivar developing processes. Private companies increasingly use marker-assisted selection, species great importance market, e.g. corn, soybean, cotton, sunflower. In Brazilian public institutions few programs it efficiently....

The biotrophic fungus Hemileia vastatrix causes coffee leaf rust (CLR), one of the most devastating diseases in Coffea arabica . Coffee, like other plants, has developed effective mechanisms to recognize and respond infections caused by pathogens. Plant resistance gene analogs (RGAs) have been identified certain plants as candidates for ( R ) genes or membrane receptors that activate genes. RGAs different possess conserved domains play specific roles fight against Despite importance RGAs,...

Um ensaio de competição linhagens café (Coffea arábica L. “Catimor”) (Rubiaceae) foi conduzido com o objetivo estimar as correlações genotípicas e relações causa-efeito entre a produtividade beneficiado outras características agronômicas. A apresentou maiores vigor vegetativo, seca ponteiros época maturação. Pela análise trilha, verificou-se que maior efeito direto sobre do quem também correlação. Houve beneficiado. Apesar da alta correlação genotípica detectada maturação, estas não...

ABSTRACT The coefficient of parentage among 121 cultivars Coffea arabica L. in Brazil released from 1939 to 2009 was estimated and used study the genetic diversity breeding pattern programs. A low observed within C. Brazil. base between defined by 13 ancestors. Seven ancestors contribute with 97.55% cultivars. Bourbon Vermelho contributed 52.76% for pool followed Sumatra (19.05%) Híbrido de Timor (11.59%). Mundo Novo Icatu 87.65% It calculated that Brazilian is derived seven ancestors,...

AFLP, RAPD and SSR molecular markers were used to study the genetic diversity structure of Híbrido de Timor germplasm. The principal coordinate analysis, UPGMA cluster analysis based on dissimilarity Jaccard, Bayesian model-based percentage polymorphic loci, Shannon's information index Nei gene employed assess diversity. analyses demonstrated a high among accessions. grouped accessions into three clusters. is reported. management germplasm variability its potential use in breeding programs...

The specialty coffee market has grown significantly in the past decades and several cultivars with productive potential. objective of this study was to evaluate sensory profile beverage produced from Coffea arabica L. genotypes based on postharvest processing identify greatest genetic potential for cultivation city Araponga, Minas Gerais, Brazil. experiment a randomized complete block design two replicates 11 different levels resistance rust. demonstrated an interaction between genotype...

Híbrido de Timor is the principal source for disease and pest resistance genes in C. arabica breeding program worldwide. The part of chromosome responsible introgressed from canephora to are claimed affect cup quality cultivars derived crossing Timor. Therefore, this work was done study genome introgression its impact on cultivars. For genetic relationship analysis, seventy-six accessions arabica, were analyzed using AFLP SSR molecular markers. To understand effect quality, three...

Breeding programs of the species Coffea canephora rely heavily on significant genetic variability between and within its two varietal groups (conilon robusta). The use hybrid families individuals has been less common. objectives this study were to evaluate parents from populations conilon, robusta, hybrids define best breeding selection strategies for productivity disease resistance traits. As such, 71 conilon clones, 56 robusta 20 evaluated over several years following traits: vegetative...

Coffee is one of the main agrifood commodities traded worldwide.In 2009, coffee accounted for 6.1% value Brazilian agricultural production, generating a revenue US$6 billion.Despite importance production in Brazil, it supported by narrow genetic base, with few accessions.Molecular differentiation and diversity breeding program were assessed gSSR EST-SSR markers.The study comprised 24 accessions according to their origin: arabica (six traditional genotypes C. arabica), resistant leaf...