Genetic parameters estimates and visual selection for leaves production in Ilex paraguariensis

Sturion, J. A.; Stuepp, Carlos André; Wendling, Ivar

doi:10.1590/1678-4499.2016.419

Cited by 20 publications

(14 citation statements)

References 12 publications

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“…Ilex paraguariensis has recently been included in the list of native species with proven potential in clonal forestry (Santin et al, 2015;Sturion et al, 2017). Although it is still under evaluation in the field, it has presented promising Table 6.…”

Section: Clonal Forests Of Brazilian Native Tree Speciesmentioning

confidence: 99%

Vegetative propagation and application of clonal forestry in Brazilian native tree species

Stuepp

Wendling

Xavier

et al. 2018

Pesq. agropec. bras.

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Understanding the mechanisms involved in tree species maturation, related mainly to ontogenetic age effects, has contributed significantly to the vegetative propagation process of Brazilian native tree species, with consequent application of clonal forestry. A number of methodologies has been developed to rescue and vegetatively propagate these species for silvicultural and environmental restoration purposes. However, the types and purposes of propagation, as well as the choice of suitable processes and propagules considering the intended objectives, still need to be better aligned. In addition, there is an evident knowledge gap and great potential regarding the use of native tree species in Brazilian clonal forestry, indicating the need of a greater interaction between studies on the vegetative propagation and vigor of these materials in the field. Therefore, this review aims to help understand the different types of techniques used and their application on the vegetative propagation and clonal forestry of Brazilian native tree species, besides proposing a schematic sequence of the stages involved in these processes for productive and environmental purposes.

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Section: Clonal Forests Of Brazilian Native Tree Speciesmentioning

confidence: 99%

Vegetative propagation and application of clonal forestry in Brazilian native tree species

Stuepp

Wendling

Xavier

et al. 2018

Pesq. agropec. bras.

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“…Differences in aggressiveness between isolates may limit the establishment of effective methods for disease management, and the high level of aggressiveness of some isolates, as well as the low variability for resistance on I. paraguariensis genotypes, indicate that this information should be considered in the strategies for breeding programmes. However, the use of improved resistant clones is a viable alternative to this problem and several studies have already indicated the potential of using this technology to establish plantations of the species (Duarte et al, 2019; Santin et al, 2015; Sturion et al, 2017). The use of clones allows the selection of materials with genetic characteristics of interest (Nascimento et al, 2018), uniformity of plantations, in addition to the possibility to standardize silvicultural treatments and management, ensuring quality raw material for several purposes.…”

Section: Discussionmentioning

confidence: 99%

Aggressiveness and screening for host responses in yerba mate (Ilex paraguariensis) clones to a wilt disease caused by Ceratocystis fimbriata

et al. 2021

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Ceratocystis wilt of yerba mate (Ilex paraguariensis) caused by the fungus Ceratocystis fimbriata was observed in 2018 in commercial plantations located in São Mateus do Sul, PR and Arvorezinha, RS, Brazil, where mortality of the plants was up to 5%. Due to the need of control measures for this disease and to the lack of knowledge on the impact of this pathogen this new host, this study aimed to evaluate the aggressiveness of C. fimbriata isolates collected from yerba mate plantations and screen for host responses in yerba mate clones to Ceratocystis wilt. Two experiments were conducted in a completely randomized design, with 11 treatments (isolates) to assess aggressiveness of the isolates. Two experiments were conducted to assess resistance of yerba mate to C. fimbriata in a completely randomized design in a 6 × 2 factorial scheme (6 clones × 2 isolates) in two different environmental conditions (plant growth chamber and greenhouse). The isolates of C. fimbriata showed different levels of aggressiveness to yerba mate, and all evaluated clones were susceptible to Ceratocystis wilt. The plant growth chamber condition led to a faster death of the plants compared with greenhouse. This information will be useful to understand the pathosystem and seek strategies for controlling this disease in yerba mate.

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“…The success in breeding programs depends on choosing the best genotypes to be the parents of future generations. Selection should be based on the additive genetic values of individuals that will be used in future generations (Sturion et al, 2017). Thus, the 10 most resistant genotypes were selected for the four traits with higher heritability based on clone mean and selective accuracy.…”

Section: Selection Of Collar Rot-resistant Genotypesmentioning

confidence: 99%

Different strategies for estimating genetic parameters for collar rot resistance characteristics in Passiflora spp.

Marostega

Preisigke

Chimello

et al. 2021

Chil. j. agric. res.

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The use of several strategies for estimating genetic parameters in passion fruit (Passiflora spp.) segregating populations has important implications for understanding the nature of variances, especially the traits of resistance to collar rot. The objective of this study was to estimate genetic parameters and predict gains with the selection of genotypes resistant to collar rot in a population of interspecific passion fruit hybrids. For the analysis of restricted maximum likelihood/ best linear unbiased prediction (REML/BLUP), 40 interspecific hybrids obtained by crossing resistant wild species with Passiflora edulis Sims genotypes were analyzed. The Comstock and Robinson Design II methodology used two male parents (P. nitida Kunth and P. quadrangularis L.) and two female parents of P. edulis. The evaluations took place for 33 d and 10 variables of resistance to collar rot were characterized. The expression of most variables was due to the genetic effect. Dominance effects predominated. High estimates of heritability based on clone average and selective accuracy were observed, which provides favorable gains in reducing the severity of collar rot by selecting the genotypes 115-5,

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Genetic parameters estimates and visual selection for leaves production in Ilex paraguariensis

Cited by 20 publications

References 12 publications

Vegetative propagation and application of clonal forestry in Brazilian native tree species

Vegetative propagation and application of clonal forestry in Brazilian native tree species

Aggressiveness and screening for host responses in yerba mate (Ilex paraguariensis) clones to a wilt disease caused by Ceratocystis fimbriata

Different strategies for estimating genetic parameters for collar rot resistance characteristics in Passiflora spp.

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