Vegetative propagation of Campomanesia phaea by the air-layering and grafting techniques

Santoro, Marcelo Brossi; Brogio, Bruna do Amaral; Bueno, Silvana Catarina Sales; Tanaka, Francisco André Ossamu; Jacomino, Ângelo Pedro; Silva, Simone Rodrigues da

doi:10.1590/s1678-3921.pab2021.v56.02402

Cited by 2 publications

(1 citation statement)

References 19 publications

(21 reference statements)

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“…Some genotypes are difficult to graft, even for intraspecific and autografts. This is considered to be the case for many different reasons, from endogenous aspects to environmental conditions [74][75][76]. Interestingly, Orange jasmine was found to have better performance as a scion, although it has been previously reported to be incompatible with Citrus [17,18].…”

Section: Discussionmentioning

confidence: 99%

Graft Compatibility Classification within Aurantioideae Based on Biometric Traits and the Anatomy of Graft Union

et al. 2022

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Citrus relatives are a relevant source of valuable traits for use in citrus breeding, including resistance to diseases such as Huanglongbing (HLB). Resistant rootstocks may impact tree responses to HLB. This requires graft compatibility, which has been poorly investigated within the Aurantioideae. In this study, the biometric characteristics and the anatomy of the graft union of 86 scion/rootstock combinations were assessed. This comprised 18 genotypes/species and 8 genera from Citrinae, Balsamocitrinae, and Clauseninae subtribes sensu Swingle and Reece. Most graft combinations were found to be noncompatible. Phylogenetic proximity did not ensure successful grafting as, for example, Orange jasmine autografts failed, whereas some intergeneric grafts were successful (>60% of graft-take). Plant scion height was directly related to graft-take, but the correlation between the scion and rootstock stem diameters was not a reliable indicator of graft compatibility. Rangpur/Tabog, Tabog/Rangpur, Wampee/Rangpur, Wampee/Pomeroy, Wampee/Swingle, Pomeroy/Wampee, and Swingle/Wampee were the most compatible intergeneric graft combinations. Graft-take success for this was at similar levels to those of sweet orange grafted on common citrus rootstocks. The position as a scion or rootstock in the combination affected the performance and was specific to the genotypes tested. The lack of differentiation between xylem-derived calli and the accumulation of phenolic compounds at the graft union were clear anatomical and biochemical markers, respectively, of incompatibility for most Aurantioideae combinations. In the field, within a set of the ten most promising combinations, Hamlin/Rangpur (control) was the only one that became infected by ‘Candidatus Liberibacter asiaticus’. This was first observed 12 months after planting. Overall, the assessment of biometric traits and anatomy of the graft union allowed Aurantioideae genotypes to be divided into four clusters, with respect to their graft compatibility, as follows: fully compatible with high graft-take and plant growth; potentially compatible with high graft-take but lower plant growth; partially incompatible with lower graft-take and poor plant growth; and fully incompatible with a complete absence of graft-take.

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Section: Discussionmentioning

confidence: 99%

Graft Compatibility Classification within Aurantioideae Based on Biometric Traits and the Anatomy of Graft Union

et al. 2022

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Vegetative multiplication of the Atlantic Rainforest species Eugenia involucrata

Santoro

Brogio

Forte

et al. 2022

Pesq. agropec. bras.

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The objective of this work was to evaluate air layering, cutting, and grafting, with different indolebutyric acid (IBA) rates, for the vegetative propagation of Eugenia involucrata. Air layering was carried out for two consecutive years with five different IBA rates. Cutting was tested for woody and herbaceous cuttings, using four IBA rates, in three seasons. The grafting methods – cleft graft and splice graft – were tested in two seasons. For the air layering, cutting, and grafting trials the experimental designs were randomized complete blocks, completely randomized in a 3x4 factorial arrangement, and completely randomized, respectively. Plants were evaluated for rooting, survival percentage, and shoot development. In air layering, low rooting rates of 0 to 50% were observed, the use of IBA showed no consistent results, and no resulting propagules survived after being transplanted. The cutting technique showed low survival, rooting, and leaf retention rates, with no consistent effect of IBA rates. Grafting showed 35 to 50% graft fixation, with no significant difference between the splice and cleft grafting techniques. The air layering and cutting techniques are not efficient for the propagation of E. involucrata, as they do not favor the survival and rooting of seedlings. Grafting, by both techniques, is the most efficient method for E. involucrata propagation.

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Vegetative propagation of Campomanesia phaea by the air-layering and grafting techniques

Cited by 2 publications

References 19 publications

Graft Compatibility Classification within Aurantioideae Based on Biometric Traits and the Anatomy of Graft Union

Graft Compatibility Classification within Aurantioideae Based on Biometric Traits and the Anatomy of Graft Union

Vegetative multiplication of the Atlantic Rainforest species Eugenia involucrata

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