Substratos na emergência de plântulas e expressão da poliembrionia em porta-enxertos de citros

Schäfer, Gilmar; Souza, Paulo Vítor Dutra de; Daudt, Rafael Henrique Schuur; Dornelles, Ana Lúcia Cunha

doi:10.1590/s0103-84782005000200039

Cited by 5 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1 notes the characteristics: emergence percentage and emergence rate index, the Rangpur lime rootstock does not differ from lemon Volkameriano, but these differ statistically from Trifoliate orange, 'Swingle' citrumelo and Flying Dragon, which do not differ when evaluated 60 days after sowing (DAS). These results are partly similar to those found by Schafer et al (2005), who observed that the Rangpur lime rootstock has higher emergence rate index in relation to rootstock P. trifoliata orange and 'Swingle' citrumelo, however, these do not differ. In regards to the dry mass of the root, there is only a significant difference between the rootstock 'Swingle' citrumelo and Rangpur lime.…”

supporting

confidence: 90%

Seedling emergence of five varieties of citric rootstocks grown in environments with different levels of shading

Martins¹,

Coelho²,

Marçal³

et al. 2014

Plant Sci Today

View full text Add to dashboard Cite

The emergence of citrus seedlings is influenced by several factors. One is the degree of brightness. The objective of the experiment was to evaluate the influence of four environments in the emergence of seedlings of five citrus varieties rootstocks. The work was carried out on private property located in the city of Alegre-ES, located at 20° 49' south latitude and 41° 32' west longitude and 322 m altitude. The experimental design was completely randomized in a split plot, with four rooms consisting of 0, 30, 50 and 80% shading in the plot and five varieties of rootstocks subplots, with four repetitions and twenty-five seeds per replicate. The rootstocks used were the Rangpur lime, lemon Volkameriano, Poncirus trifoliata, 'Swingle' citrumelo and Flying Dragon. After 60 days of sowing, emergence rate index, emergence percentage, leaf number and height were evaluated. At 124 days, leaf area, total chlorophyll (a + b), root dry mass and shoot were evaluated. The citric rootstocks tested responded differently when subjected to shading, and can use physiological and morphological mechanisms to maintain or even improve the emergence and seedling vigor. It was observed that the P. trifoliata rootstock obtained better performance when compared to others and that 50% shading can be adopted in this stage of citrus seedling production since it reduces seedling time in the tubes and does not affect the seedling quality.

show abstract

supporting

confidence: 90%

Seedling emergence of five varieties of citric rootstocks grown in environments with different levels of shading

Martins¹,

Coelho²,

Marçal³

et al. 2014

Plant Sci Today

View full text Add to dashboard Cite

show abstract

“…Para Schaffer et al (2005) a escolha do tipo de substrato é importante tanto para a propagação vegetativa quanto por sementes e constitui um dos fatores de maior influência no enraizamento de estacas, pois além de sustentá-las, mantém a base úmida, aerada e protegida da luz. Sendo que estes fatores podem variar em função do material utilizado (WAGNER JÚNIOR et al, 2006).…”

Section: Resultsunclassified

Substratos e regulador vegetal no enraizamento de estacas de pitaya

Santos¹,

Cerqueira²,

Fernandes³

et al. 2010

Rev. Ciênc. Agron.

View full text Add to dashboard Cite

Resumo -A pitaya é uma cactácea originária das florestas tropicais americanas que produz frutos exóticos bem apreciados e comercializados, principalmente no continente asiático. Contudo, ainda é uma espécie vegetal que demanda informações técnicas de cultivo nas áreas agrícolas brasileiras, motivando pesquisas em várias áreas do conhecimento. Objetivou-se avaliar diferentes substratos no enraizamento de cladódios imersos e não imersos no regulador de crescimento, ácido naftalenacético (ANA), na formação e desenvolvimento inicial de raízes em estacas de Hylocereus undatus, resultando em mudas mais vigorosas e de melhor qualidade. O experimento foi conduzido sob ripado no Departamento de Produção Vegetal -setor de Horticultura da Faculdade de Ciências Agronômicas no campus de Botucatu -UNESP. O delineamento experimental foi o inteiramente aleatorizado em esquema fatorial 4 x 2 (substratos x condições) com quatro repetições. Após 60 dias da instalação do experimento foram avaliados: massa fresca e seca da parte aérea, massa fresca e seca das raízes e o comprimento da maior raiz. O crescimento e desenvolvimento radicular inicial de mudas não são influenciados pelo regulador vegetal ANA. Os substratos com a presença de areia são os mais adequados para a formação de mudas vigorosas e de boa qualidade. A mistura areia + esterco bovino proporciona maior acúmulo de fitomassa no sistema radicular de pitaya (H. undatus).Palavras-chave -Cactácea. Estaquia. Raízes Adventícias. Abstract -The pitaya, a cactaceous species native to American tropical forests, produces well-appreciated and commercialized exotic fruits, mainly in the Asian continent. However, this plant species still requires technical information regarding cultivation in Brazilian agricultural areas, encouraging thus studies in several knowledge areas. This work aimed to evaluate the effect of different substrates on the rooting of cladodes immersed or not in the plant growth regulator naphthaleneacetic acid (ANA), as well as on root formation and initial development of Hylocereus undatus cuttings, which provides more vigorous and higher-quality seedlings. The experiment was carried out in a lath house of the Department of Plant Production -Horticulture Sector, College of Agronomical Sciences, Botucatu Campus, São Paulo State University (UNESP). Experimental design was completely randomized, in a 4x2 (substrates x conditions) factorial arrangement, with four replicates. At 60 days after the experiment establishment, shoot fresh and dry matter, root fresh and dry matter, and the highest root length were evaluated. The initial root growth and development of seedlings were not influenced by ANA. Substrates containing sand were the most suitable to produce vigorous and high-quality seedlings. Sand+manure bovine mixture provided higher phytomass accumulation in the root system of pitaya (H. undatus).

show abstract

“…En este caso, la obstrucción en el sitio de la malformación puede disminuir el transporte, aun cuando el agua del suelo no sea limitante. El aumento en área foliar implica mayor área de incidencia de radiación, y por lo tanto mayor transpiración y fotosíntesis (Pire et al, 2007). En este caso, las plantas no están respondiendo a una condición del ambiente, sino a una limitación propia.…”

Section: Discussionunclassified

“…We have found differences in the degree of polyembryony, germination percentage (Shinde et al, 2007), plant vigor (leaf area and height), leaf nutrient content, water relations (Shãfer et al, 2005), flooding and drought stress resistance (García-Sánchez et al, 2007), hydraulic conductivity, root length, transpiration and salt stress conditions (Castle et al, 2009;Gimeno et al, 2009).…”

Section: Introductionmentioning

confidence: 96%

“…Se han encontrado diferencias en el grado de poliembrionía, porcentaje de germinación (Shinde et al, 2007), vigor de las plantas (área foliar y altura), contenido nutrimental de hojas, relaciones hídricas (Shãfer et al, 2005), resistencia a estrés por inundación y sequía (García-Sánchez et al, 2007), conductividad hidráulica, longitud de raíces, transpiración y condiciones de estrés por sales (Castle et al, 2009;Gimeno et al, 2009).…”

Section: Introductionunclassified

See 1 more Smart Citation