11 documents found, page 1 of 2
Genetic diversity and diallel analysis of elite popcorn lines
Castro,Camila Rodrigues; Gonçalves,Leandro Simões Azeredo; Pinto,Ronald Barth; Scapim,Carlos Alberto; Baba,Viviane Yumi; Zeffa,Douglas MarianiABSTRACT Popcorn is an important agricultural crop that is consumed as a snack food worldwide. In Brazil, the lack of cultivars with high potential grain yield and popping expansion volume is a vital problem. Therefore, the present study aimed to evaluate the genetic divergence among elite popcorn lines using amplified fragment length polymorphism (AFLP) markers to estimate the general and specific combining ab...
Acylsugars in tomato varieties confer resistance to the whitefly and reduce the...
Dias,Diego Munhoz; Corte,Ligia Erpen-Dalla; Resende,Juliano Tadeu Vilela; Zeffa,Douglas Mariani; Resende,Nathalia Campos Vilela; Zanin,Daniel SuekABSTRACT Whiteflies (Bemisia tabaci) are a serious threat to tomato (Solanum lycopersicum) yield and production since all varieties are highly susceptible to this insect. The wild tomato Solanum pennellii shows resistance towards whiteflies infestation due the high contents of acylsugars presents in its leaflets, which is not observed in S. lycopersicum. Thus, plants from the F2BC2 population derived from the c...
Methods of application of indolebutyric acid and basal lesion on ‘Woodard’ blue...
Higuchi,Maíra Tiaki; Ribeiro,Luana Tainá Machado; Aguiar,Aline Cristina de; Zeffa,Douglas Mariani; Roberto,Sergio Ruffo; Koyama,RenataAbstract Blueberry cuttings are difficult to root, so alternatives that maximize their rhizogenic potential are essential for the expansion of the crop. The objective of this work was to evaluate the effect of the basal lesion and different methods of indolebutyric acid (IBA) on the rooting of ‘Woodard’ herbaceous cuttings, collected in two seasons. The experimental design used was completely randomized in a 3x...
Performance of the double-cross tomato hybrids from a partial diallel
Matos,Rafael de; Resende,Juliano Tadeu Vilela de; Zeist,André Ricardo; Corte,Lígia Erpen-Dalla; Da-Silva,Paulo Roberto; Zeffa,Douglas MarianiABSTRACT Knowledge of the combining ability of genotypes, genetic diversity, and heterosis play the paramount role in obtaining double-cross hybrids with high productivity. This study was aimed at evaluating these parameters in tomato genotypes using partial diallel crosses among the commercial single-cross hybrids, which verified the possibility of using double-cross hybrids for commercial purposes. Tomato gen...
Genetic variability in peppers accessions based on morphological, biochemical a...
Constantino,Leonel Vinicius; Fukuji,Anderson Yusei Suzuki; Zeffa,Douglas Mariani; Baba,Viviane Yumi; Erpen-Dalla Corte,Ligia; Giacomin,Renata MussoiABSTRACT The evaluation of genetic diversity among the accessions of a germplasm collection results in information about promising materials suitable for breeding programs. Thus, the goal of this work was to characterize Capsicum baccatum accessions from different Brazilian regions, based on morphological, biochemical and molecular traits, aiming to support chili pepper breeding programs. The fruits were morpho...
Bayesian AMMI applied to food-type soybean multi-environment trials
Freiria,Gustavo Henrique; Gonçalves,Leandro Simões Azeredo; Zeffa,Douglas Mariani; Lima,Wilmar Ferreira; Fonseca Júnior,Nelson da SilvaABSTRACT A complicating factor for the selection of plant strains is the influence of a genotype-environment (GE) interaction. The Bayesian approach is a tool to increase the efficiency of adaptability and stability methodologies. In this context, the objective of this study was to evaluate the linear and bi-linear parameters of the additive main effects and multiplicative interaction (AMMI) analysis using the ...
Amino acid concentration, total phenolic compound content and antioxidant activ...
Fukuji,Anderson Yusei Suzuki; Constantino,Leonel Vinicius; Zeffa,Douglas Mariani; Andrade,Felipe Aranha de; Silva,Mayara Barbosa daAbstract The snap bean (Phaseolus vulgaris L.) is an economically important legume worldwide due to its good nutritional quality, being considered as a source of protein, fibre, vitamins and minerals. Furthermore, snap beans present high phenolic compound levels and antioxidant activity, factors that contribute in the prevention of the oxidation effects by free radicals. Hence, the present study characterized f...
Multivariate analysis reveals key traits of fall armyworm resistance in tropica...
Sanches,Rafael Egea; Suzukawa,Andréia Kazumi; Contreras-Soto,Rodrigo Iván; Rizzardi,Diego Ary; Kuki,Mauricio Carlos; Zeffa,Douglas MarianiABSTRACT In the present study it is hypothesized that the germplasm of popcorn of tropical regions shows resistance to FAW, and the multivariate analysis can characterize the main traits of this resistance. Thus, the aim of this study was to identify key traits used to select fall armyworm resistance in popcorn by using factor and cluster analyses. Sixteen biological traits were evaluated at larval and pupae st...
Morphological characterization and selection of castor bean accessions for mech...
Oliveira Neto,Sebastião Soares de; Manjavachi,Matheus Kainan de Paula; Zeffa,Douglas Mariani; Sartori,Maria Márcia Pereira; Zanotto,Maurício DutraABSTRACT Castor bean (Ricinus communis L.) is an oilseed found in different regions worldwide, due to its easy propagation and adaptability. Cropping more productive disease-resistant genotypes that enable a mechanized production ensures greater economic returns for farmers. This study aimed to morphologically characterize and select promising castor bean accessions for mechanized cropping, mainly as a source o...
The influence of topdressing nitrogen on Azospirillum spp. inoculation in maize...
Zeffa,Douglas Mariani; Fantin,Lucas Henrique; Santos,Odair José Andrade Pais dos; Oliveira,André Luiz Martinez de; Canteri,Marcelo GiovanettiABSTRACT The Azospirillum is considered one of the most studied plant growth promoter genus. These bacteria are capable of promoting plant growth through several factors. However, the effect of Azospirillum spp. associated to nitrogen fertilization on maize grain yield has brought about controversial results. Thus, the objective of this study was to verify the influence of topdressing nitrogen on the effect of ...