Early selection and classification of yerba mate progênies

Wendling, Ivar; Sturion, J. A.; Stuepp, Carlos André; Reis, Cristiane Aparecida Fioravante; Ramalho, Magno Antônio Patto; Resende, Marcos Deon Vilela de

doi:10.1590/s0100-204x2018000300002

Cited by 20 publications

(13 citation statements)

References 18 publications

(18 reference statements)

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“…For example, Sturion et al (2017) estimated an individual heritability of 0.17 for LMW at 18.5 years of age, a value and age similar to those of the present study. However, in contrast to our findings, Wendling et al (2018) reported higher heritability estimates for the LMW trait at various ages, including 0.59 at age 2.5, 0.79 at age 4.5, 0.88 at age 6.5, and 0.65 at age 18.7. Concerning the crown traits, low to high values of h 2 were obtained (0.08 and 0.74), with average values of 0.38 for CH, 0.21 for CD, and 0.37 for CV (Table 2).…”

Section: Genetic Variance Heritability and Additive Genetic Coefficie...contrasting

confidence: 99%

Genetic parameter estimation for Ilex paraguariensis St. Hill. in Argentina using spatial analysis

Schoffen,

Cappa,

Gauchat

et al. 2023

Crop Breed. Appl. Biotechnol.

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Spatial and non-spatial analyses were conducted to estimate genetic parameters for the traits leaf mass weight (LMW), crown height (CH), crown diameter (CD), and crown volume (CV) for ages between 21 and 27 in 10 half-sib progeny trials of Ilex paraguariensis St. Hill. The spatial model gave a better fit than the base model in 87.2% of the analysed dataset, with reductions in residual and plot variances. The narrow-sense heritability estimates ranged from low to moderate for LMW trait (0.01 to 0.43) and from low to high for crown traits (0.08 to 0.74). The additive genetic coefficient of variation for the LMW trait was over 12.4%, while for CH and CD it was below 10%. Generally, the additive genetic correlations (r̂a) between the LMW evaluations and between LMW and crown traits were greater than 0.70.

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Section: Genetic Variance Heritability and Additive Genetic Coefficie...contrasting

confidence: 99%

Genetic parameter estimation for Ilex paraguariensis St. Hill. in Argentina using spatial analysis

Schoffen,

Cappa,

Gauchat

et al. 2023

Crop Breed. Appl. Biotechnol.

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“…Yerba mate (Ilex paraguariensis St. Hil) is a native woody tree from Araucaria Forest (Mixed Ombrophilous Forest) in South America [1,2], cultivated in Argentina, Paraguay, Uruguay, and southern Brazil, where its leaves are ground and have been used to produce a tea beverage widely consumed locally [3].…”

Section: Introductionmentioning

confidence: 99%

Inoculation of Arbuscular Mycorrhizal Fungi Improves Growth and Photosynthesis of Ilex paraguariensis (St. Hil) Seedlings

Tomazelli

Costa

Primieri

et al. 2022

Braz. arch. biol. technol.

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Yerba mate (Ilex paraguariensis St. Hill.) is an important woody tree in South America, however the production of quality seedlings is a major problem. Microorganisms that promote plant growth have shown to be efficient biotechnologies in the production of seedlings. The arbuscular mycorrhizal fungi (AMF), it establishes symbiosis with several plant species and increases the accumulation of biomass and absorption of poorly mobile nutrients such as phosphorus. Here, we test the effects of two AMF species on growth, root architecture, phosphorus accumulation and gas exchange of yerba mate seedlings cultivated under different phosphorus levels. We used seedlings in a non-sterile soil, inoculated with AMFs Rhizophagus clarus SCT720A and Acaulospora colombiana SCT115A, and non-inoculated (control) treatment under five levels of phosphorus (0; 25; 50; 100 and 200% recommendation). After 90 days of AMF inoculation, plant dry biomass, root architecture and mycorrhizal colonization were determined and after 180 days, the same parameters plus photosynthetic rate, transpiration rate, stomatal conductance and P content were evaluated. AMF inoculation increased shoot and root dry biomass, total root length, root volume. Plants inoculated with AMF showed higher photosynthesis rate. Phosphorus content and mycorrhizal colonization were increased almost three times when inoculated with AMF. Our findings highlight the importance of AMF inoculation for Ilex paraguariensis seedlings production, reducing the time needed in nurseries to enhance tree performance. HIGHLIGHTS• Arbuscular mycorrhizal fungi (AMF) inoculation increases root development and photosynthesis of yerba mate.• The inoculation of AMF improves yerba mate growth and can reduce the time needed in nurseries.• No P supply was needed to produce I. paraguariensis seedlings inoculated with AMF.

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“…Based field evaluations and the results of genetic-statistical analyzes for the traits at two (height and crown diameter) and three years old (visually estimated biomass, weighed biomass and thick branch mass), it is recommended to continue evaluating these experiments in the coming years. These considerations are also based on the evaluation of feasibility of early selection for yerba mate performed by Wendling et al (2018). In this case, early selection is effective at 6.5 years for the trait commercial biomass of leaves and branches smaller than 7 mm.…”

Section: Resultsmentioning

confidence: 99%

Genetic improvement of Ilex paraguariensis in western Santa Catarina State: estimate of phenotypic and genetic parameters

Floss

Stuepp

Wendling

et al. 2022

RSD

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An especially important species in South America, yerba mate (Ilex paraguariensis A.St.-Hil) is traditionally consumed as tea, chimarrão and tererê. Due to the formation of mate plantations with low productivity and high heterogeneity, genetic improvement actions have been conducted as a way to generate more productive cultivars of this species. In this sense, the present study aimed to estimate phenotypic and genetic parameters of yerba mate production traits earlier in provenance and progeny tests, implanted in the municipalities of Chapecó and Guatambu, in the western region of Santa Catarina State (South America). In each environment, 55 open pollinated yerba mate progenies were evaluated in a randomized complete block design, with five replications and three plants per plot. The traits measured at two years old were: height and crown diameter (m) and at three years were: visually estimated commercial biomass, weighed commercial biomass and thick branch mass (kg). The data obtained was analyzed using the genetic-statistical Selegen software. The results obtained support that there is genetic variability in the open pollinated yerba mate progenies evaluated in Santa Catarina, with possible gains by selecting the best parent trees for future production of improved seeds and for cloning.

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Early selection and classification of yerba mate progênies

Cited by 20 publications

References 18 publications

Genetic parameter estimation for Ilex paraguariensis St. Hill. in Argentina using spatial analysis

Genetic parameter estimation for Ilex paraguariensis St. Hill. in Argentina using spatial analysis

Inoculation of Arbuscular Mycorrhizal Fungi Improves Growth and Photosynthesis of Ilex paraguariensis (St. Hil) Seedlings

Genetic improvement of Ilex paraguariensis in western Santa Catarina State: estimate of phenotypic and genetic parameters

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