‘Brs Mandinho’: The First Platycarpa Peach Cultivar Released in Brazil

Raseira, M. do C. B.; Scaranari, Ciro; Franzon, Rodrigo Cezar; Feldberg, Nelson Pires; Nakasu, B. H.

doi:10.1590/0100-29452016616

Cited by 2 publications

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References 2 publications

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“…Peach seedlings of the cultivar BRS-Mandinho, which produces flat or platycarp fruit (Raseira et al, 2016), were produced in a container (citropotes) with a capacity of 3.78 L. The containers were conditioned on benches in an alternative system equipped with fertigation in agricultural greenhouses. During the seedling production period, which was around 18 months, the internal temperature of the greenhouse was around 24°C.…”

Section: Plant Materialsmentioning

confidence: 99%

Tolerance of cultivars and clonal selections of peach rootstocks to excess aluminum

Aguilar,

Moura-Bueno,

Mayer

et al. 2023

Sem. Ci. Agr.

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Forms of aluminum (Al) present in the solution of tropical and subtropical soils can cause toxicity in rootstocks and peach cultivars, impairing growth and productivity. This can be minimized by growing Al-tolerant rootstocks and cultivars. However, this is not sufficiently known, especially because plant breeding programs do not always consider tolerance as a selection variable for genetic materials. The study aimed to (a) select cultivars and clonal selections of Al-tolerant peach rootstocks, (b) identify variables that confer Al tolerance for use in genetic improvement programs, and (c) propose critical levels (NC) and ranges of toxicity (TF) of Al in relation to morphological variables of the root system. The experimental design was completely randomized, comprising a factorial of 13 (cultivars and clonal selections) x 2 (with and without Al) with three replications. Own-rooted ‘BRS Mandinho’ peach seedlings (without rootstock) and grafted seedlings of ‘BRS Mandinho’ on different cultivars and clonal rootstock selections were cultivated in a hydroponic system, composing two levels for the Al factor (absence and presence at 100 mg L−1). The morphological variables of the canopy and root system, Al accumulation in tissues, translocation factor, and the critical level (NC) and toxicity range (TF) of Al in the roots were evaluated. Rootstocks FB-SM-09-43, JB-ESM-09-13, SAS-SAU-09-71, SS-CHI-09-40, ‘Sharpe’ and VEH-GRA-09-55 were tolerant at high Al concentrations. The NC of Al in the roots in relation to the root surface area of peach rootstocks was 1400 mg Al kg−1, and the FT was between 1200 and 1500 mg Al kg−1.

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Section: Plant Materialsmentioning

confidence: 99%

Tolerance of cultivars and clonal selections of peach rootstocks to excess aluminum

Aguilar,

Moura-Bueno,

Mayer

et al. 2023

Sem. Ci. Agr.

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Oxidative stress as markers in identification of aluminum-tolerant peach tree rootstock cultivars and clonal selections

Aguilar,

Wertonge,

Birck

et al. 2024

Revista Brasileira De Ciência Do Solo

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Peach rootstock and scion cultivars are selected in breeding programs considering resistance to pests and diseases, salt tolerance, drought tolerance, and vigor. However, rootstock tolerance to aluminum (Al), which is markedly present in tropical and subtropical soils of the world, is not considered. Thus, it is essential to define potential markers that can contribute to the selection of Al-resistant or Al-tolerant peach rootstocks. The objective of this study was to identify Al-tolerant peach tree rootstock cultivars and clonal selections using physiological and oxidative stress variables. A completely randomized experimental design was used in a 13 (rootstock cultivars and clonal selections) × 2 (with and without Al) factorial arrangement, with three replications. Nursery peach trees of own-rooted ‘BRS Mandinho’ (without rootstock) and nursery trees of ‘BRS Mandinho’ grafted on different rootstock cultivars and clonal selections were grown in a hydroponic system, consisting of two treatments, with and without 100 mg L -1 of Al. Dry biomass, photosynthetic variables, pigment concentration, hydrogen peroxide content, membrane lipid peroxidation, and activity of the antioxidant enzymes were evaluated. The total dry matter production of the own-rooted ‘BRS Mandinho’ trees and the SS-CHI-09-39 and SS-CHI-09-40 selections is affected by the Al presence, representing a decline of 35.4, 37.2, and 24.4 %, respectively, compared to the treatment with Al. The highest total dry matter production in Al presence was observed for the ‘Sharpe’ rootstock. ‘Capdeboscq’, DB-SEN-09-23, FB-ESM-09-43, JB-ESM-09-13, JAH-MAC-09-77, SAS-SAU-09-71, and VEH-GRA-09-55 rootstock selections are tolerant to Al. The use of physiological and biochemical variables shows potential for the selection of clonal rootstocks tolerant or resistant to Al.

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‘Brs Mandinho’: The First Platycarpa Peach Cultivar Released in Brazil

Cited by 2 publications

References 2 publications

Tolerance of cultivars and clonal selections of peach rootstocks to excess aluminum

Tolerance of cultivars and clonal selections of peach rootstocks to excess aluminum

Oxidative stress as markers in identification of aluminum-tolerant peach tree rootstock cultivars and clonal selections

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