An Analysis of the Development of the Graft Union in Lycopersicon esculentum

Lindsay, David William; Yeoman, M. M.; Brown, Rex V.

doi:10.1093/oxfordjournals.aob.a084849

Cited by 39 publications

(24 citation statements)

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“…Previous research on graft development (Lindsay, 1972;Lindsay et al, 1974;Miedzybrodzka, 1980) and graft incompatibility (Yeoman & Brown, 1976;Yeoman et al, 1978) using whole-plant grafts of herbaceous solanaceous species has demonstrated that graft survival is ensured by two major features of compatible grafts: (1) the presence of numerous trans-union vascular connections which presumably restore a flow of water and nutrients to the scion, and (2) the attainment of sufficient mechanical strength at the graft union to support the scion. In contrast, the development of incompatible whole-plant grafts is characterized by the absence of functional trans-union xylem connections (Yeoman et al, 1978), and the original xylem elements close to the graft union may become blocked with tyloses and is therefore unable to transport water and solutes (C. E. Jeffree, unpublished results).…”

Section: Discussionmentioning

confidence: 99%

“…Measurements of graft breaking-weight were made using the procedure described by Lindsay, Yeoman & Brown (1974) in which grafts were attached to a modified balance so that gradually increasing tensile stress could be applied between stock and scion by applying weights. The tensile load in grams which was being applied when the graft broke is defined as the 'graft breaking-weight'.…”

Section: Analytical Techniquesmentioning

confidence: 99%

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Incompatibility in Cultured Explant‐grafts Between Members of the Solanaceae

1987

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SUMMARYThe development in culture of explant-grafts between compatible and incompatible combinations of three solanaceous species parallels that of the corresponding whole-plant grafts in respect of the pattern of vascular development and the functional status of the vascular system. In culture, incompatible explant-grafts attain greater mechanical strength than corresponding whole-plant grafts, and consequently tbis parameter of their development is an unsuitable criterion for judging the compatibility of explant-grafts. The findings demonstrate that graft compatibility/incompatibility is determined by local factors operating close to the graft union, possibly at a cellular level between the opposing cells of stock and scion. Explant grafting in culture offers an ideal system for experimental analysis of the cellular basis of incompatibility in internode grafting.

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Section: Discussionmentioning

confidence: 99%

Section: Analytical Techniquesmentioning

confidence: 99%

Incompatibility in Cultured Explant‐grafts Between Members of the Solanaceae

1987

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“…We measured tensile strength as an index of the development of the graft union (Lindsay et al, 1974;Moore, 1982;Pedersen, 2005). We also measured leaf water potential and leaf conductance after storage, which indicate water status and gas exchange of cuttings, respectively, and chlorophyll fluorescence parameters during storage, which indicate photosynthetic activity (Kubota et al, 1995), as indexes of storage quality.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Graft Development in Tomato and Eggplant Grafted Cuttings by Supplying Warmed Water to Graft Union during Low-air-temperature Storage

Shibuya¹,

Nakashima²,

Shimizu-Maruo³

et al. 2007

J. Japan. Soc. Hort. Sci.

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We investigated the effects of supplying warmed water to the graft union of tomato and eggplant grafted cuttings during low-air-temperature storage on graft development and plant growth after storage. The scions of grafted cuttings were held at an air temperature of 9 to 12°C, while the region from the cut end of the rootstock cuttings to the graft union was held at 12 to 37°C in water during 4 days' storage. The tensile strength of some cuttings' graft union was measured as an index of graft development. The tensile strength of the tomato graft union was much improved when the graft union temperature ranged from 23 to 27°C. That of the eggplant graft union increased as the temperature rose up to 29°C. After 4 days' storage, the remaining cuttings were planted in vermiculite medium and grown in a growth chamber. Cuttings from the temperatures that gave a higher tensile strength tended to grow larger. We also investigated the effects of supplying the water at 28°C to the graft union on the storage quality of cuttings by measuring the water status, gas exchange, and chlorophyll fluorescence parameters after 4 days' storage at an air temperature of 9 to 11°C. The leaf water potential and leaf conductance of scions with warmed graft unions were significantly higher than those with unwarmed graft unions. The chlorophyll fluorescence parameters Φ PSII and the electron transfer rate were maintained with warmed water during storage, but were significantly decreased without warmed water application. These results indicate that keeping the graft union warm during low-air-temperature storage can improve graft development, storage quality, and plant growth after storage.

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“…En la Figura 3b se presenta la continuidad vascular en la región de unión, también se aprecian a los lados, restos de la línea de demarcación. Lindsay et al (1974) dividió el desarrollo de la continuidad vascular en injertos de jitomate en dos fases: primera (4 DDI), intensa actividad celular y aumento del número de traqueidas en el xilema y segunda (7 DDI), la diferenciación de las traqueidas formadas en la primera fase. En injertos de otras solanácea como el pimiento (Capsicum annuum L.), Chang et al (2012) reportaron el establecimiento vascular a los 14 DDI, tiempo requerido para realizar el trasplante.…”

Section: Resultados Y Discusiónunclassified

“…Figure 3b shows the vascular continuity in the join region, on the sides the remains of the demarcation line can be observed. Lindsay et al (1974) divided the development of vascular continuity in tomato grafts into two phases: first (4 DDI), intense cellular activity and increased number of tracheids in xylem and second (7 DDI), differentiation of tracheids formed in the first phase. In other solanaceous grafts such as peppers (Capsicum annuum L.), Chang et al (2012) reported the vascular establishment at 14 DDI, time required to perform the transplant.…”

Section: Conclusionesmentioning

confidence: 99%

Proceso de unión del injerto de empalme en jitomate (Solanum lycopersicum L.)

Velasco-Alvarado

Castro-Brindis

Avitia-García

et al. 2017

Remexca

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La técnica de injerto en jitomate representa una alternativa sustentable para el control de enfermedades, para incrementar el vigor de planta, mejorar la calidad de fruto y rendimiento. Los primeros factores importantes en el proceso de injerto son la compatibilidad anatómica y el tiempo de establecimiento de la continuidad vascular entre los dos tejidos vegetales, este último determina el momento del trasplante. El objetivo del presente estudio fue evaluar el proceso de unión del injerto con el método de empalme en jitomate, mediante cortes anatómicos del punto de unión; así como, determinar el tiempo de desfasamiento en la siembra entre los genotipos ‘Multifort’y ‘El Cid’(portainjerto e injerto, respectivamente) para sincronizar el diámetro de tallo. Se sembraron 100 semillas de ambos genotipos, de esas plántulas se midieron los diámetros de tallo diariamente. Se tomaron muestras de tejido del punto de unión del injerto a los 5, 10 y 15 días después de la injertación (DDI), los cortes anatómicos fueron de 10 μm de espesor obtenidos con un microtomo rotatorio. Los resultados indicaron, que se requiere sembrar el injerto o púa, dos días antes que el portainjerto para homogenizar el diámetro de tallo a 2 mm (ideal para injertar). En las imágenes de los cortes anatómicos se encontró que a los 5 DDI la línea de demarcación comenzó a reabsorberse y al mismo tiempo dio inicio la formación de nuevo tejido de conducción (xilema y floema), la completa conexión vascular se llevó a cabo a los 10 DDI.

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An Analysis of the Development of the Graft Union in Lycopersicon esculentum

Cited by 39 publications

References 5 publications

Incompatibility in Cultured Explant‐grafts Between Members of the Solanaceae

Incompatibility in Cultured Explant‐grafts Between Members of the Solanaceae

Improvement of Graft Development in Tomato and Eggplant Grafted Cuttings by Supplying Warmed Water to Graft Union during Low-air-temperature Storage

Proceso de unión del injerto de empalme en jitomate (Solanum lycopersicum L.)

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