Genetic analysis of tropical rust resistance in popcorn lines

Sanches, Rafael Egéa; Scapim, Carlos Alberto; Tessmann, Dauri José; Vieira, Rafael Augusto; Rodovalho, Marcos de Araújo; Milani, Klayton Flávio

doi:10.1590/s0103-84782011000600008

Cited by 4 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the disease-resistance traits, although there are no analogous studies on Fusarium spp. causing ear rots in popcorn, dominance effects were reported in other pathosystems such as with Fusarium solani in soyben (Fronza (2003); Giberella zeae in common corn (Butron et al 2006); Physopella zeae in popcorn (Sanches et al 2011); E. turcicum, Physopella. zeae, and Puccinia polysora in corn (Nihei and Ferreira (2012).…”

mentioning

confidence: 89%

Diallel analysis of resistance to Fusarium ear rot in Brazilian popcorn genotypes

Schwantes

Júnior

Gerhardt

et al. 2017

Trop. plant pathol.

View full text Add to dashboard Cite

Among the ear rot pathogens, species of Fusarium cause significant economic losses to popcorn production. To generate popcorn genotypes resistant to Fusarium ear rot, the combining ability of popcorn lines in diallel crosses were assessed during two cropping years: the first from Mar to Sep 2015 and the second from Sep 2015 to Jan 2016. The traits analyzed were: average ear weight (AEW, kg ha −1); grain yield (GY, kg ha −1); popping expansion (PE, g mL −1), Fusarium incidence on ears (EIF U , %); Fusarium ear rot severity index (FSI, %), percentage of fungal-infected kernels (KIF), and percentage of Fusarium-infected kernels (KIF U). Non-additive genetic effects prevailed in the expression of resistance to Fusarium ear rot and grain yield, while additive effects were the most prominent in the expression of popping expansion. Among 56 hybrids, seven showed outstanding grain yield, desirable popping expansion, and resistance to Fusarium ear rot. The less susceptible hybrids to ear rot produced high grain yield and popping expansion. Two diseaserelated traits, KIFu and EIFu, allowed to best differentiate among the genotypes.

show abstract

mentioning

confidence: 89%

Diallel analysis of resistance to Fusarium ear rot in Brazilian popcorn genotypes

Schwantes

Júnior

Gerhardt

et al. 2017

Trop. plant pathol.

View full text Add to dashboard Cite

show abstract

“…mays) is a specialized type of maize in which harvested kernels have the ability to form flakes when heated; this trait distinguishes popcorn from other types of corn (JELE, 2014). In Brazil, there is an increasing demand for popcorn (MOTERLE et al, 2012); however, breeding new varieties is hampered by the narrow genetic base present in the germplasm (PAJIC et al, 2008, SANCHES, 2011. As a consequence, agronomic performance for traits of interest, such as reduced susceptibility to pests and diseases, are poorer in Brazil (LI et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Popcorn genotypes resistance to fall armyworm

Oliveira¹,

Suzukawa

Pereira

et al. 2018

Cienc. Rural

Self Cite

View full text Add to dashboard Cite

The aim of this study was to evaluate popcorn genotypes for resistance to the fall armyworm, Spodoptera frugiperda. The experiment used a completely randomized design with 30 replicates. The popcorn genotypes Aelton, Arzm 05 083, Beija-Flor, Colombiana, Composto Chico, Composto Gaúcha, Márcia, Mateus, Ufvm Barão Viçosa, Vanin, and Viviane were evaluated,along with the common maize variety Zapalote Chico. Newly hatched fall armyworm larvae were individually assessed with regard to biological development and consumption of food. The data were subjected to multivariate analyses of variance and genetic divergence among genotypes was evaluated through the clustering methods of Tocher based on generalized Mahalanobis distances and canonical variable analyses. Seven popcorn genotypes, namely, Aelton, Arzm 05 083, Composto Chico, Composto Gaúcha, Márcia, Mateus, and Viviane,were shown to form a cluster (cluster I) that had antibiosis as the mechanism of resistance to the pest. Cluster I genotypes and the Zapalote Chico genotype could be used for stacking genes for antibiosis and non-preference resistance.

show abstract

“…Only in the last decade, studies about the control of diseases in popcorn have become a concern to breeders (Arnhold 2008;Vieira et al 2011;Sanches et al 2011;Vieira et al 2012;Noor et al 2015;Vieira et al 2016). To complicate matters, no research has been developed on resistance to ear rot in popcorn.…”

Section: Introductionmentioning

confidence: 99%

“…To complicate matters, no research has been developed on resistance to ear rot in popcorn. In this regard, the evaluation of germplasm banks is of great importance during pre-breeding, mainly to support breeding programs in the identification of sources of resistance genes (Sanches et al 2011;Resh et al 2015;Vivas et al 2015).…”

Section: Introductionmentioning

confidence: 99%