Rooting Potential of Ilex Paraguariensis Cuttings of Two Populations of Southern Brazil in Two Rooting Environments

Nascimento, Bruno; Sá, Alexandra Cristina Schatz; Bittencourt, Larissa; Silva, Douglas Trautmann e; Navroski, Márcio Carlos; Mantovani, Adelar

doi:10.5380/rf.v52i2.81688

Cited by 4 publications

(1 citation statement)

References 12 publications

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“…Pine seed shells are a popular designation for the seeds of several tree species, including both Pinaceae and Araucariaceae families, and are a popular ingredient for typical dishes from Brazilian gastronomy. Similarly, yerba mate is a traditional South American beverage prepared by infusion, which is widely consumed in countries such as Argentina, Paraguay and Uruguay [17,18]. Although pine seed shells and yerba mate leaves are important goods from the South American culture and cuisine, their consumption also generates wet waste that needs to be managed [19].…”

Section: Introductionmentioning

confidence: 99%

Rigid Polyurethane Biofoams Filled with Pine Seed Shell and Yerba Mate Wastes

et al. 2023

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Pine seed shells and yerba mate are common wastes leftover from the food and beverage industry. This study presents the development of rigid polyurethane foams (RPUFs) filled with pine seed shells and yerba mate at 5, 10 and 15 wt%. The fillers were characterized for chemical properties using bench chemistry analyses, and the RPUFs were investigated in terms of chemical, morphological, mechanical, thermal and colorimetric characteristics. The main results indicated that yerba mate showed good compatibility with the polyurethane system, probably because its available hydroxyl groups reacted with isocyanate groups to form urethane bonds, producing increases in mechanical and thermal properties. However, pine seed shell did not appear to be compatible. Anisotropy increased slightly, as there was an increase in the percentage of reinforcement. The mechanical properties of the yerba mate reinforced foams proved stable, while there was a loss of overall up to ~50% for all mechanical properties in those reinforced with pine seed shell. Thermal properties were improved up to ~40% for the yerba mate reinforced foams, while those reinforced with pine nuts were stable. It was possible to observe a decrease in the glass transition temperature (Tg) of ~−5 °C for the yerba mate reinforced foams and ~−14 °C for the pine seed shell reinforced ones.

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Section: Introductionmentioning

confidence: 99%

Rigid Polyurethane Biofoams Filled with Pine Seed Shell and Yerba Mate Wastes

et al. 2023

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VEGETATIVE RESCUE AND PROPAGATION OF NATIVE Ilex paraguariensis POPULATIONS IN SANTA CATARINA STATE, BRAZIL

et al. 2023

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When producing Ilex paraguariensis seedlings through vegetative propagation, selecting the correct populations and genotypes, and obtaining juvenile material, may be fundamental for its success. Therefore, this search aimed to test its vegetative propagation through cutting and rescue using detached branches of different populations in Santa Catarina state, Brazil. Thus, two experiments were installed in September 2019 in order to test: I) the cuttings of four populations belonging to the municipalities of Catanduvas (CT), Painel (PL), Três Barras (TB), and Urupema (UR), using ten randomly chosen genotypes from each, and; II) the epicormic sprouting of detached branches from these same populations. Both experiments were carried out in Lages, Santa Catarina. In February 2020, the cutting was evaluated according to the percentages of survival, callus, rooting, new sprouts, and original leaves permanence. The branches were evaluated every 30 days after storing, observing the percentages of sprouting branches, number of sprouts, and length of sprouts in centimeters. As for cutting, there was a low survival percentage in all populations (<15%), but some genotypes presented greater vigor, such as TB1 (46%), TB7, and TB3 (both 28%). Most live cuttings presented calluses (>70%), characteristic of material of high maturity. Rooting was low for populations (<1.5%) and genotypes (<10%). Branches presented sprouts up to 60 days, with TB presenting the highest total number of sprouts (approximately 300) and the greatest average length (2.8 cm). In general, survival and rooting of cuttings were affected by both populations and genotypes, highlighting TB. A similar response was observed for the branches’ sprouting. New studies with more populations, further analyses of the branches’ characteristics, and better storage conditions are recommended.

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A broad analysis of vegetative rescue and propagation of Moquiniastrum polymorphum (Less.) G. Sancho

Schatz Sá,

Nascimento,

Jan Schramm Corrêa

et al. 2024

NZJFS

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Background: The primary method for propagating forest species is through seeds, which is cost-effective and ensures genetic adaptability to environmental changes. However, germination issues and genetic variability can hinder standardisation of productivity. In the case of Moquiniastrum polymorphum, a species known for its remarkable wood quality and pharmacological potential, seedling production and genetic improvement efforts have been limited. This study focused on the rescue and vegetative propagation of M. polymorphum, which are crucial steps for species selection and genetic enhancement. Methods: Protocols were tested to rescue and propagate propagules from different individuals collected in Lages, Santa Catarina (2020/2022). The vegetative rescue tests were: (I) epicormic sprouting induction through girdling techniques and detached branches; and (II) influence of individuals, disposition sense and time on the epicormic sprouting of detached branches. Vegetative propagation analyses included: (I) cutting according to individuals; and (II) relation between rooting environments and individuals on cutting. Results: The results indicated that the girdling techniques were not efficient for vegetative rescue, as only 8% of individuals produced epicormic sprouts. In contrast, detached branches showed a much higher success rate of 80% for epicormic sprouting, revealing significant differences in sprout development among individuals over time. Vertically oriented branches produced nearly three times more sprouts compared to horizontally oriented branches. Regarding vegetative propagation, certain individuals exhibited remarkable rooting rates of over 75%. However, no conclusive results were obtained when using epicormic materials or when considering different rooting environments. Conclusions: Given the significance of rescue and vegetative propagation in plant genetic improvement and the limited research addressing these aspects in M. polymorphum, this study holds substantial importance for future investigations. It is recommended to expand rescue and vegetative propagation studies to encompass additional populations, different individuals, and rooting environments, further advancing our understanding and efforts to enhance this species.

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Rooting Potential of Ilex Paraguariensis Cuttings of Two Populations of Southern Brazil in Two Rooting Environments

Cited by 4 publications

References 12 publications

Rigid Polyurethane Biofoams Filled with Pine Seed Shell and Yerba Mate Wastes

Rigid Polyurethane Biofoams Filled with Pine Seed Shell and Yerba Mate Wastes

VEGETATIVE RESCUE AND PROPAGATION OF NATIVE Ilex paraguariensis POPULATIONS IN SANTA CATARINA STATE, BRAZIL

A broad analysis of vegetative rescue and propagation of Moquiniastrum polymorphum (Less.) G. Sancho

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