Desenvolvimento vegetativo e produtivo da cultivar 'Maciel' em diferentes porta-enxertos

Picolotto, Luciano; Schmitz, Juliano Dutra; Pasa, Mateus da Silveira; Bianchi, Valmor João; Fachinello, José Carlos

doi:10.1590/s0103-84782012005000034

Cited by 7 publications

(10 citation statements)

References 16 publications

(12 reference statements)

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“…Under conditions similar to our study, Picolotto et al (2007) obtained seedlings of the 'Aldrighi', 'Capdeboscq' and 'Okinawa' with a mean height of 15.0 cm and diameter of 1.90 mm, 35 days after germination. However, Schmitz et al (2014), studying rootstocks 'Okinawa' and 'Capdeboscq' obtained a mean height of 12.72 and 15.30 cm, respectively at 58 DAS.…”

Section: Germination Potential Of Seeds Without Endocarpssupporting

confidence: 51%

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Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

et al. 2017

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-The present study evaluated the germination potential of seeds from eight peach tree rootstocks under different stratification methods, aiming at the production of high quality seedlings. In the first experiment, seeds with endocarp from eight genotypes ('Aldrighi', 'Capdeboscq', 'Flordaguard', 'Okinawa', 'Okinawa roxo', 'Tsukuba 1', 'Tsukuba 2', 'Tsukuba 3') were stratified on sand and moist vermiculite, at 7 ºC for 60 days. In the second experiment, endocarpless seeds of the same genotypes were stratified on Petri dishes at 7 ºC. In the third experiment, the time at which at least 75% of the seedlings reached transplanting height (15 cm high) was verified. The endocarp was a limiting factor for seed germination of the eight rootstocks, since the highest germination percentages were 21% and 48.3% for 'Aldrighi' and 'Capdeboscq', respectively. Germination of 'Okinawa' was only 19.2% and 4.2%, in sand and vermiculite, respectively. Seeds stratified without the endocarp, showed 100% germination, except for 'Flordaguard' and 'Tsukuba 2' and 3', with 93% germination. Seed mass presented a positive correlation with the germination speed index and the initial growth of the seedlings. 'Aldrighi' and 'Capdeboscq' presented more vigorous seedlings with greater growth in height, stem diameter, and Dickson quality index.

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Section: Germination Potential Of Seeds Without Endocarpssupporting

confidence: 51%

“…After that step, the asepsis of all the material utilized in the experiment was performed according to the methodology proposed by Picolotto et al (2007). To reach the objectives of the study, three independent experiments were conducted, as follow.…”

Section: Description Of the Study Area And General Plant Materials Prementioning

confidence: 99%

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

et al. 2017

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“…However, there are no studies correlating the SPAD index with optimum levels of leaf N for peach trees grown in Southern Brazil. For grafting incompatibility studies, the SPAD index can only support the diagnostic, as no definition of threshold values that can be used to determine if a combination scion/rootstock is compatible exists (PICOLOTTO et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Graft incompatibility in Prunus spp. preceded by SPAD index reduction

Neves

Mayer

Ueno

2017

SCA

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This study aimed to measure the leaf chlorophyll index (SPAD 502 Plus) in three peach cultivars grafted on different clonal rootstocks, totaling 68 scion/rootstock combinations, between five and nine months after planting in the field to determine possible graft incompatibility symptoms in Prunus spp. Three field trials with peach scion cultivars 'BRS-Kampai', 'Jade', and 'Maciel' grafted on 18, 25, and 25 clonal rootstocks, respectively, were established in July and August 2014. Own-rooted scion trees (without rootstock) were used as controls in each trial and all rootstocks were propagated from herbaceous cuttings. The experimental design was a randomized block with four replications and each plot consisting of a single plant. Three SPAD measurements were taken between January and April 2015. SPAD index values for rootstocks 'Mirabolano 29C' (P. cerasifera) and 'Marianna 2624' (P. cerasifera x P. munsoniana) were significantly lower in the three scion cultivars, culminating with tree death from graft incompatibility. Rootstocks 'Mirabolano 29C' and 'Marianna 2624' showed translocated graft incompatibility with scion cultivars BRS-Kampai, Jade, and Maciel and tree death was preceded by a reduction in SPAD index values five months after field planting. No reduction in SPAD index values was observed in the other scion/rootstock combinations nine months after planting, but these combinations should be monitored for a longer period to confirm their graft compatibility. Key words: Chlorophyll meter. Stone fruit trees. Rootstock. Rosaceae. ResumoO objetivo deste trabalho foi mensurar o índice de clorofila (SPAD 502 Plus) em folhas de três cultivares de pessegueiros enxertados em diferentes porta-enxertos clonais, totalizando 68 combinações copa/ porta-enxerto, entre cinco e nove meses após o plantio no campo, para qualificar os possíveis sintomas que antecedem a incompatibilidade de enxertia em Prunus spp. Três unidades de observação (UO) com as cultivares copa 'BRS-Kampai', 'Jade' e 'Maciel' foram estabelecidas sobre 18, 25 e 25 portaenxertos clonais, respectivamente, no inverno de 2014. Como testemunhas, utilizaram-se as respectivas cultivares-copa autoenraizadas (sem porta-enxerto) que, assim como os porta-enxertos, também foram propagadas por estacas herbáceas. Adotou-se o delineamento experimental em blocos ao acaso com quatro repetições, sendo cada parcela composta por uma planta. O índice SPAD foi determinado em três avaliações, entre janeiro e abril de 2015. Os porta-enxertos 'Mirabolano 29C' (P.cerasifera) e 'Marianna 2624' (P.cerasifera x P.munsoniana) reduziram os índices SPAD nas avaliações realizadas nas três cultivares copa de pessegueiro, que culminaram com a morte das plantas por incompatibilidade. Conclui-se que os porta-enxertos 'Mirabolano 29C' (P.cerasifera) e 'Marianna 2624' (P.cerasifera P.munsoniana) apresentam incompatibilidade de enxertia do tipo "translocada" com as cultivares de pessegueiro BRS-Kampai, Jade e Maciel e a morte dessas plantas foi precedida pela redução dos índices SPA...

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“…This type of plant material is not proper to be used as a rootstock (Picolotto et al, 2012), due to the susceptibility to various biotic and abiotic stressful factors, which occur into the soil and may affect the longevity and productivity of plants.…”

Section: Introductionmentioning

confidence: 99%

Correlation of biometrical characteristics of fruit and seed with twinning and vigor of Prunus persica rootstocks

et al. 2016

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-This study aimed at determining and correlating the main morphometric characteristics of fruits and seeds with the germination potential and vigor of eight peach rootstocks. The experimental design was completely randomized, with four replications of 50 seeds per treatment. The analyzed variables were: length, width, thickness, fresh mass of fruit and seeds, moisture content of seeds, percentage of seeds attacked by fungi and intact seeds, germination percentage, germination speed index (GSI) and mean germination time (MGT). The Capdeboscq, Aldrighi and Tsukuba 1 cultivars showed higher values of length, width, thickness and fresh mass of seeds compared to other cultivars, presenting a relationship with the later period of fruit ripening. Regardless of the fruit ripening time, the germination percentage was high, ranging between 93% and 100% for all cultivars. In addition, the fresh mass of fruits has showed a high positive correlation with the fresh mass of seeds for the eight evaluated peach rootstocks. The GSI and MGT have a high relationship with the fresh mass of seeds.Index terms: Rosaceae, morphobiometry, seeds, cultivars, peach.Correlação de características biométricas de frutos e sementes com a germinação e vigor de porta-enxertos de Prunus persica RESUMO -Objetivou-se determinar e correlacionar as principais características morfométricas de frutos e sementes sobre o potencial de germinação e o vigor de oito porta-enxertos de pessegueiro. O delineamento experimental foi inteiramente casualizado com quatro repetições de 50 sementes por tratamento. As variáveis analisadas foram: comprimento, largura, espessura, massa fresca dos frutos e sementes, grau de umidade de sementes, porcentagem de sementes intactas e infectadas por fungos, porcentagem de germinação, índice de velocidade de germinação (IVG) e tempo médio de germinação (TMG). As cultivares Capdeboscq, Aldrighi e Tsukuba 1 apresentaram maiores valores médios de comprimento, largura, espessura e massa fresca de sementes comparados com as demais cultivares, apresentando relação com o período mais tardio de maturação dos frutos. Independente da época de maturação dos frutos, a porcentagem de germinação foi alta variando entre 93% e 100% para todas as cultivares. Somado a isso, a massa fresca do fruto apresenta alta correlação positiva com a massa fresca das sementes dos oito porta-enxertos de pessegueiro avaliados. O IVG e o TMG possuem alta relação com a massa fresca das sementes.

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Desenvolvimento vegetativo e produtivo da cultivar 'Maciel' em diferentes porta-enxertos

Cited by 7 publications

References 16 publications

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

Graft incompatibility in Prunus spp. preceded by SPAD index reduction

Correlation of biometrical characteristics of fruit and seed with twinning and vigor of Prunus persica rootstocks

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