Graft incompatibility in Prunus spp. preceded by SPAD index reduction

Neves, Tainá Rodrigues das; Mayer, Newton Alex; Ueno, B.

doi:10.5433/1679-0359.2017v38n2p635

Cited by 9 publications

(12 citation statements)

References 14 publications

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“…However, the overall yield average observed in the present study resembles that found in southern Brazil (Barreto et al, 2017), northern Tunisia (Yahmed et al, 2016) and northern and southern Italy (Scalisi et al, 2018). (Zarrouk et al, 2006;Neves et al, 2017) and in pear (Melo et al, 2017), in order to introduce useful characteristics such as vigor control, pest resistance and edaphoclimatic adaptation, such a combination does not always result in success.…”

Section: Heritability Of Individual Plots Average Genotype Heritabilsupporting

confidence: 59%

Simultaneous selection of peach rootstocks by mixed models

et al. 2020

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The term adaptability refers to the ability of a genotype to respond favorably to environmental spur, while stability is the predictability of genotypic behavior. Therefore, the objective was to select Prunus rootstock cultivars with greater adaptability and genotypic stability for subtropical environmental conditions using the HMPRVG method. The experiment was conducted in Chapecó, Santa Catarina State, Brazil. Twenty-one rootstock genotypes were evaluated under the ‘BRS-Libra’ canopy cultivar and one genotype from self-rooted seedlings. The 22 genotypes were evaluated for canopy volume, yield, fruit diameter and fruit set in the growing seasons 2015/16, 2016/17, 2017/18 and 2018/19. Adaptability and stability were measured by means of the harmonic mean relative performance of genotypic values (HMRPGV). In addition, genetic parameters for heritability and ratio test were measured. According to the results, the self-rooted, ‘De Guia’, ‘I-67-52-4’, ‘Mexico Row 1’ and ‘Rosaflor’ genotypes coincided most frequently in the ranking of the three most adaptable and stable genotypes. On the other hand, the ‘P. mandshurica’, ‘Rigitano’ and ‘Santa Rosa’ genotypes corresponded to the lowest adaptability and stability values, thus constituting low quality genetic materials for cultivation. It can be concluded that under the tested conditions the HMPRVG method is efficient for the Prunus rootstock selection cultivars and the ‘BRS-Libra’ grafted on ‘Mexico Row 1’, ‘Rosaflor’ rootstocks and trees from self-rooted seedlings have greater adaptability and phenotypic stability under the subtropical cultivation conditions.

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Section: Heritability Of Individual Plots Average Genotype Heritabilsupporting

confidence: 59%

Simultaneous selection of peach rootstocks by mixed models

et al. 2020

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“…values did not decrease in other scion/rootstock combinations after 9 months of planting, indicative of their compatibility (Figures 5A,B; Neves et al, 2017). Thus, SPAD chlorophyll meter serves as an effective and non-destructive tool for the prediction of incompatible graft combinations.…”

Section: Graft Incompatibility: Types and Determining Techniquesmentioning

confidence: 74%

“…The rootstocks showing translocated graft incompatibility symptoms like reddening of leaves, excessive leaf curling, leaf drop, etc., with scion cultivars died 5 months after planting. SPAD index values did not decrease in other scion/rootstock combinations after 9 months of planting, indicative of their compatibility ( Figures 5A,B ; Neves et al, 2017 ). Thus, SPAD chlorophyll meter serves as an effective and non-destructive tool for the prediction of incompatible graft combinations.…”

Section: Graft Incompatibility: Types and Determining Techniquesmentioning

confidence: 87%

Mechanisms Underlying Graft Union Formation and Rootstock Scion Interaction in Horticultural Plants

et al. 2020

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Grafting is a common practice for vegetative propagation and trait improvement in horticultural plants. A general prerequisite for successful grafting and long term survival of grafted plants is taxonomic proximity between the root stock and scion. For the success of a grafting operation, rootstock and scion should essentially be closely related. Interaction between the rootstock and scion involves complex physiological-biochemical and molecular mechanisms. Successful graft union formation involves a series of steps viz., lining up of vascular cambium, generation of a wound healing response, callus bridge formation, followed by vascular cambium formation and subsequent formation of the secondary xylem and phloem. For grafted trees compatibility between the rootstock/scion is the most essential factor for their better performance and longevity. Graft incompatibility occurs on account of a number of factors including of unfavorable physiological responses across the graft union, transmission of virus or phytoplasma and anatomical deformities of vascular tissue at the graft junction. In order to avoid the incompatibility problems, it is important to predict the same at an early stage. Phytohormones, especially auxins regulate key events in graft union formation between the rootstock and scion, while others function to facilitate the signaling pathways. Transport of macro as well as micro molecules across long distances results in phenotypic variation shown by grafted plants, therefore grafting can be used to determine the pattern and rate of recurrence of this transport. A better understanding of rootstock scion interactions, endogenous growth substances, soil or climatic factors needs to be studied, which would facilitate efficient selection and use of rootstocks in the future. Protein, hormones, mRNA and small RNA transport across the junction is currently emerging as an important mechanism which controls the stock/scion communication and simultaneously may play a crucial role in understanding the physiology of grafting more precisely. This review provides an understanding of the physiological, biochemical and molecular basis underlying grafting with special reference to horticultural plants.

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“…A incompatibilidade de enxertia de 'Mirabolano 29C' com 'BRS Libra' já foi observada por Pressi (2015) na região sul do Brasil, em Chapecó-SC, onde o portaenxerto apresentou engrossamento excessivo do caule e induziu baixo vigor à cultivar copa. Neves et al (2017) também verificaram que tanto 'Marianna 2624' quanto 'Mirabolano 29C' reduziram os índices de clorofila em folhas e ocasionaram morte de plantas das cultivares Kampai, Jade e Maciel.…”

Section: Resultsunclassified

Desempenho de pessegueiro ‘BRS Libra’ autoenraizado e enxertado sobre porta-enxertos clonais em Minas Gerais

Gonçalves

Monteiro

Mayer

et al. 2019

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AGRONOMIA (AGRONOMY) RESUMO: Um dos principais problemas da persicultura brasileira é a falta de homogeneidade das plantas em função da propagação sexuada dos porta-enxertos, o que provoca grande variação no desempenho agronômico da cultivar copa. Diante disso, objetivou-se avaliar, nas condições edafoclimáticas do sul de Minas Gerais, o desempenho vegetativo, produtivo e a qualidade de frutos de pessegueiro 'BRS Libra' autoenraizado e enxertado em 23 porta-enxertos clonais. O estudo foi desenvolvido de 2014 a 2017 na Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG). O experimento foi instalado em delineamento casualizado em blocos e as plantas foram conduzidas no sistema Y com espaçamento de 5,0 x 1,5 m, sem irrigação. Foram avaliados o incremento anual do diâmetro do caule dos porta-enxertos e enxertos, sobrevivência das plantas, eficiência produtiva, produção e produtividade, além da massa fresca, tamanho e teor de sólidos solúveis dos frutos. Os porta-enxertos com melhor desempenho agronômico e possibilidade de utilização no sul de Minas Gerais foram 'Okinawa', 'Flordaguard', 'Tsukuba-2', 'De Guia' e 'Rigitano', além das plantas autoenraizadas. Palavras-chave: compatibilidade de enxertia; eficiência produtiva; Prunus persica (L.

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Graft incompatibility in Prunus spp. preceded by SPAD index reduction

Cited by 9 publications

References 14 publications

Simultaneous selection of peach rootstocks by mixed models

Simultaneous selection of peach rootstocks by mixed models

Mechanisms Underlying Graft Union Formation and Rootstock Scion Interaction in Horticultural Plants

Desempenho de pessegueiro ‘BRS Libra’ autoenraizado e enxertado sobre porta-enxertos clonais em Minas Gerais

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