Distribuição do sistema radicular de porta-enxertos sob laranjeira ‘Folha Murcha’ em clima subtropical

Zaccheo, Paulo Vicente Contador; Neves, Carmen Sílvia Vieira Janeiro; Stenzel, Neusa Maria Colauto; Okumura, Ricardo Shigueru

doi:10.5433/1679-0359.2012v33n3p921

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The citrus roots system concentrated in the soil surface layers were also found in other studies, even in conditions with soil without physical barriers (Alves Júnior et al, 2012;Zaccheo et al, 2012). According to Santana et al (2006), root concentration in surface soil horizons is associated to their higher biological activity and water and nutrients availability.…”

Section: Resultssupporting

confidence: 72%

Rootstocks and planting types on root architecture and vegetative vigor of ‘Pera’ sweet orange trees

Meneses

Filho

et al. 2020

Rev. bras. eng. agríc. ambient.

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Root architecture affects plant growth and agricultural productions. Although it is related to genetic factors, soil physical limitations can affect the root system and volume of explored soil, compromising plant growth and fruit production. Considering the need to mitigate these restrictions, the objective of the present study was to evaluate two planting types (planting of protected seedlings and planting of seeds in definitive place) and two scion-rootstock combinations (‘Pera’ sweet orange, CNPMF D-6 selection, combined with ‘Santa Cruz Rangpur’ lime and ‘Sunki Tropical’ mandarin rootstocks). The experiment was conducted at the Lagoa do Coco Farm, Rio Real, BA, Brazil, in a Oxisol under rainfed conditions. Biometric, physiological, and soil water content evaluations were made during the experiment. Soil mechanical resistance to root penetration and root system characteristics were also evaluated. Roots were concentrated on the soil surface layers (0-0.40 m), extending horizontally up to 1.50 m from the plant, regardless of the management practices used. The total root length in each root diameter classes studied, root length density, and total root mean diameter were higher for planting of protected seedling, resulting in greater root development. Plants from ‘Pera’ sweet orange scion grafted on ‘Santa Cruz Rangpur’ lime rootstock had earlier production and were more vigorous. Soil structure affects root growth, and the root distribution up to 0.40 m depth is correlated with plant vigor, yield, and water status under rainfed conditions.

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Section: Resultssupporting

confidence: 72%

Rootstocks and planting types on root architecture and vegetative vigor of ‘Pera’ sweet orange trees

Meneses

Filho

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…Roots had lower concentrations in the layers below 40 cm, showing a parallel with nutrient concentrations (P, K, and Ca) ( Table 1 (1) Means followed by equal letters, in the columns, do not differ, by Tukey's test, at 5% probability. root systems can also be observed for other species, such as passion fruit (Sousa et al, 2002;Lucas et al, 2012) and orange rootstocks (Zaccheo et al, 2012). Although root development in coffee is mainly related to the genetic characteristics of the plant (Martins et al, 2013), other factors may also interfere in the spatial distribution, such as the propagation form, seedling stage, and amount of water in the soil (Franco & Inforzato, 1946).…”

Section: Resultsmentioning

confidence: 99%

Root system distribution and yield of 'Conilon' coffee propagated by seeds or cuttings

Partelli

Covre

Oliveira

et al. 2014

Pesq. agropec. bras.

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-The objective of this work was to evaluate the root system distribution and the yield of 'Conilon' coffee (Coffea canephora) propagated by seeds or cuttings. The experiment was carried out with 2x1 m spacing, in an Oxisol with sandy clay loam texture. A randomized complete block design was used, following a 2x9x6 factorial arrangement, with two propagation methods (seeds and cuttings), nine sampling spacings (0.15, 0.30, 0.45, 0.60, 0.75, and 0.90 m between rows, and 0.15, 0.30, and 0.45 between plants within rows), six soil depths (0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.50, and 0.50-0.60 m), and six replicates. Soil cores (27 cm 3 ) with roots were taken from 12 experimental units, 146 months after planting. The surface area of the root system and root diameter, length, and volume were assessed for 13 years and, then, correlated with grain yield. The highest fine root concentration occurred at the superficial soil layers. The variables used to characterize the root system did not differ between propagation methods. Moreover, no differences were observed for net photosynthetic CO 2 assimilation rate, stomatal conductance, internal CO 2 concentrations, and instantaneous water-use efficiency in the leaves. Cutting-propagated plants were more productive than seed-propagated ones.Index terms: Coffea canephora, root diameter, root length, root volume, vegetative propagation. Distribuição do sistema radicular e produtividade do café 'Conilon' propagado por sementes ou estaquiaResumo -O objetivo deste trabalho foi avaliar a produtividade e a distribuição do sistema radicular do café 'Conilon' (Coffea canephora) propagado por sementes ou estaquia. O experimento foi realizado no espaçamento 2x1 m, em Latossolo com textura franco-argilo-arenosa. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo fatorial 2x9x6, com dois métodos de propagação (semente e estaca), nove espaçamentos (0,15, 0,30, 0,45, 0,60, 0,75 e 0,90 m, nas entrelinhas, e 0,15, 0,30 e 0,45 entre plantas), seis profundidades (0,20, 0,30, 0,40, 0,,50 e 0,50-0,60 m) e seis repetições. Foram retirados monólitos (27 cm 3 ) de solo com raízes de 12 unidades experimentais, 146 meses após o plantio. A área superficial do sistema radicular bem como o diâmetro, o comprimento e o volume das raízes foram avaliados por 13 anos e correlacionados à produtividade de grãos. A maior concentração de raízes mais finas ocorreu nas camadas superficiais do solo. As variáveis utilizadas para caracterizar o sistema radicular não diferiram entre os métodos de propagação. Além disso, não se observaram diferenças quanto à taxa de assimilação fotossintética líquida de CO 2 , nem quanto à condutância estomática, às concentrações internas de CO 2 e à eficiência do uso da água nas folhas. Plantas propagadas por estaquia foram mais produtivas do que as propagadas por sementes.Termos para indexação: Coffea canephora, diâmetro de raízes, comprimento de raízes, volume de raízes, propagação vegetativa.

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“…To achieve diversification, studies are needed to test different species with rootstock potential and that have, for example, resistance to diseases, tolerance to abiotic stresses, and affinity with scion varieties of market interest. In addition, the performance should be analyzed throughout the production cycle, from clonal seedling formation in the nursery, during the initial growth in the orchard, and during the full fruit production (Zaccheo et al, 2012;Gonzatto et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Growth and physiology of the citrange ‘Fepagro C37 Reck’ rootstock innoculated with arbuscular mycorrhizal fungi

2018

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The use of arbuscular mycorrhizal fungi (AMF) in the production of rootstocks is a strategy to promote faster plant growth. However, this response depends on the symbiont species. The objective of this study was to evaluate the influence of different species of arbuscular mycorrhizal fungus (AMF) on the development and physiology of citrange 'Fepagro C37 Reck' rootstock. Four species of AMF were used in the experiment: Scutellospora heterogama, Gigaspora margarita, Glomus etunicatum, and Acaulospora sp., and a control treatment. The experiment was arranged in a randomized blocks design, with 5 treatments, 3 replicates, and 10 plants per plot. Every 15 days, height (cm) and stem diameter (mm) of plants were measured in the nursery. At 330 days, the number of leaves, leaf area (cm²), fresh and dry mass of roots and shoot (g/plant), root and shoot reserve content, and AMF colonization were evaluated. The AMF inoculation promoted an accelerated vegetative growth, resulting in greater height and diameter. The fungi also promoted greater absorption of most of the nutrients and increase in all other parameters evaluated. However, no effect was found on the reserve content of the rootstock. Roots were colonized with moderate presence of arbuscules and low presence of vesicles. AMF, regardless of species, influence the development and physiology of the citrange 'Fepagro C37 Reck' rootstock.

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Distribuição do sistema radicular de porta-enxertos sob laranjeira ‘Folha Murcha’ em clima subtropical

Cited by 5 publications

References 11 publications

Rootstocks and planting types on root architecture and vegetative vigor of ‘Pera’ sweet orange trees

Rootstocks and planting types on root architecture and vegetative vigor of ‘Pera’ sweet orange trees

Root system distribution and yield of 'Conilon' coffee propagated by seeds or cuttings

Growth and physiology of the citrange ‘Fepagro C37 Reck’ rootstock innoculated with arbuscular mycorrhizal fungi

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