The use of genetically resistant cultivars is the best method to reduce losses caused by white mold (Sclerotinia sclerotiorum (Lib.) de Bary).As known resistance sources are not adapted, genetic control in common bean must be understood guide breeding more efficiently.The objective present study was identify an indirect using oxalic acid.For this, descendents VC3 cross (susceptible) x G122 (resistant) were used.The trait assessed a descriptive key scores after treatment with acid.The...

ABSTRACT Forest plantation costs can be reduced by the income from annual crops that are intercropped with trees. An experiment was carried out over two years to assess viability of agroforestry systems including sabiá (Mimosa caesalpiniifolia), gliricidia (Gliricidia sepium) and maize (cultivar AG 1051). In 2010, legumes were grown both as monocrops (taungya system) in randomized blocks five replications. Three rows planted between each legume (at a spacing 4.0 m x m). 2011, cut down, young...

The aim of this study was to characterize and estimate the genetic similarity among 93 cassava accessions. DNA amplification performed with 14 microsatellite primers. products were separated by a polyacrylamide gel electrophoresis, showing polymorphism formation, through which accessions discriminated against. estimated Dice coefficient. Cluster analysis carried out using UPGMA method. polymorphic primers amplified total 26 alleles 2-4 per loci. ranged from 0.16 0.96. average values for...

The objective of the research was to investigate nature and magnitude genetic factors involved in resistance common bean white mold. lines G122 (resistant) M20 (susceptible) were crossed yield F1 F2 generations F2:3 progenies. experiment set up using random block design with two replications, each which evaluated twice fungal inoculations being performed on 28 38 day-old plants straw test method. Six eight days after inoculation evaluations conducted individual at level means progenies a...

The aims of this study were to i) identify the influence GxE interaction in selection inbred lines melon, and ii) test efficiency different indexes with a higher yield potential better quality fruit. For these purposes, 98 yellow melon two commercial controls, Vereda AF-646, evaluated randomized block design replications, at conditions present Mossoró Baraúna. Analyses following traits performed: fruit yield, mean weight, pulp thickness, firmness soluble solids content. A complex portion was...

ABSTRACT: Melon or muskmelon (Cucumis melo L.) is of considerable economic importance in Brazil. Nearly all the cultivars currently grown are hybrids. Heterosis has been used to advantage melon plant, and use uniform hybrids one reasons for successful cultivation. The aim present study was evaluate agronomic potential yellow lines An experiment conducted randomized blocks with three replications 24 generated by crosses among elite as female parents (AF-01, AF-02, AF-03) eight male (LAM-01,...

Apparently, there are no custard apple cultivars defined for the northeastern region of Brazil. The establishment breeding programs aimed at selection types from productive locations later cloning is desirable. This work's objective was to evaluate yield (during first three crops) and quality (first crop) fruits 20 half-sibling tree progenies, selected home orchards. An additional estimate genetic parameters traits evaluated. A micro sprinkling-irrigated experiment conducted in Mossoró-RN,...

ABSTRACT This study aimed to characterize buffel grass accessions of the Cenchrus Germplasm Active Bank (CGAB) from Embrapa Semi-Arid in a morphoagronomic way, checking descriptors variability and efficiency on two consecutive cuts. Twenty-five five cultivars were used randomized complete block design with three replications. Evaluations conducted after cuts, each evaluation performed 90 days cut. Characterization was based 15 quantitative qualitative descriptors. Quantitative subjected...

RESUMO: O míldio, causado pelo fungo Pseudoperonospora cubensis é uma das principais doenças foliares que acometem a cultura do meloeiro no período chuvoso da região Nordeste brasileira. objetivo presente trabalho foi identificar e caracterizar morfologicamente fontes de resistência P. cubensis. Trinta seis acessos quatro cultivares comerciais foram avaliados em delineamento blocos casualizados com três repetições. A unidade experimental composta por sete plantas. E avaliação realizada...

Climate changes can influence the genetic diversity of forage plants, which may contribute to improvement and development new species. Therefore, this research aimed evaluate temperature increase on Macroptilium accessions based morphoagronomic descriptors. The experiment was carried out in a growth chamber 2×16 factorial arrangement (temperature regimes x accessions), with temperatures consisting T1 (20–26–33 °C) T2 (24.8–30.8–37.8 16 accessions. Eleven descriptors allowed estimating among...

The selection of native forage species with yield potential under climate change scenarios can strengthen resilience the Brazilian semiarid region. This study aimed to evaluate effect increasing temperature on growth and morphological responses plants genus Manihot. experimental design was completely randomized in a 2×9 factorial arrangement (two regimes nine genotypes). increase promoted higher plant dry mass (PDM) for genotypes A:24, A:79, A:102, A:EL, A:GO during establishment. percentage...

The aim of this study was to identify sources resistance toMyrothecium roridum and Podosphaeria xanthii. Initially, 86 inbred lines the crossing AM-04 x Goldex, 91 AM-12 Rochedo, 75 ACP AF-646 were evaluated. trials carried out in a greenhouse randomized block design with five replications. Seventeen identified as resistant M. roridum. These lines, well parents seven differential cultivars (checks) evaluated for reaction P. Ten selected moderately

Genetic parameters and genotypic values of fruits from umbu-cajazeira clones were determined using the restricted maximum likelihood/best linear unbiased prediction (REML/BLUP) method, morphological, physicochemical chemical characterization fruits. The experiment was composed six experimental clones, in three randomized complete block designs replicates per plot an unbalanced arrangement Ipanguaçu/RN, due to non-fructification some experiment. Morphological, 20 each clone performed....

The genus Stylosanthes has economic importance in semi-arid regions and requires studies that reveal complex relationships between species involving different ploidies. aim of this study was to cytogenetically investigate accessions identified as S. scabra, order properly identify the number, morphology, pattern distribution heterochromatin, analyzing karyological variability these species. Accessions with 2n=40 2n=20 were identified, exhibiting semi-reticulate interphase nuclei, symmetric...

ABSTRACT: This research studied the genetic control of traits related to melon fruit quality. The F1, F2, BC1, BC2 generations from OL x A-16 and PV crossings were evaluated in two separate trials conducted randomized blocks with three replications. were: average weight, shape index, pulp thickness, firmness, soluble solids content cracking rate. analyses accomplished through a classic study involving mixed models. parameters on heritability number loci controlling broad narrow sense....

Cassava (Manihot esculenta Crantz) is an important forage source for livestock, while wild cassavas (maniçoba and pornunça – Manihot sp.), native from Brazilian semi-arid have the potential to feed ruminants in drylands. We hypothesized that maniçoba a chemical composition morphophysiological responses similar cassava cultivars. Nine plants were evaluated, six accessions (BGMS 20, BGMS 21, 22, 26, 79, 102), 24) two cultivars (gema-de-ovo [GO] engana-ladrão [EL]). evaluated 6-month crop...