Maravilha: uma nova seleção de tangerina 'Sunki'

Filho, Walter dos Santos Soares; Sobrinho, Almir Pinto da Cunha; Passos, O. S.; Moitinho, Emerson Dourado Barreto

doi:10.1590/s0100-29452003000200021

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…Also, the dendrograms obtained using ISSR, SSR, and LIFS-405 yielded similar results. They clustered the Sunki selections in the same way, i.e., a cluster for TSKC and TSKFL and another for TSKTR and TSKMA, corroborating the morphological analysis described in [10], although the latter two selections exhibited similar polyembryony and seed number, but are different from their source matrices. The dendrogram obtained with LIFS-561, however, separated TSKMA from TSKTR, and identified the former as the most distinct of the four analyzed selections.…”

Section: Number Of Alleles Generatedsupporting

confidence: 76%

“…morphological standpoint, the TSKMA and TSKTR selections are easier to differentiate between themselves and between them and their respective source varieties, TSKC and TSKFL, due to having a greater number of seeds and higher polyembryony than the other Sunki selections [5] [10]. On the other hand, the differentiation between TSKC and TSKFL is far more complex because of the Sunki-specific features [10]. Despite this complexity, the LIFS technique was capable of differentiating TSKC and TSKFL with at least 70% accuracy.…”

Section: Number Of Alleles Generatedmentioning

confidence: 99%

“…Two selections of mandarin Sunki were reported by the Citrus Breeding Program at EMBRAPA Mandioca e Fruticultura (Citrus PMG-CNPMF): the tropical [5], selected from Common Sunki, and Maravilha [10], selected from Florida Sunki, which usually show maternal traits, but higher numbers of seeds, higher percentage of polyembryony, and resistance to Phytophthora root rot [10]. Morphological traits are currently used to identify these selections-Common, Florida, Tropical and Maravilha, but it is very costly due to the long time required for fruit production and subsequent evaluation.…”

Section: Introductionmentioning

confidence: 99%

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Rapid Differentiation of Closely Related <i>Citrus Genotypes</i> by Fluorescence Spectroscopy

Santana-Vieira¹,

Milori²,

Boas³

et al. 2014

ABB

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The differentiation of closely related Citrus genotypes is a meticulous, laborious, and time-consuming task that involves the assessment of complex traits such as growth, tolerance to stress, photosynthetic efficiency, yield, and many others. Such a task is generally accomplished either by analyzing specific features of adult plants or by applying molecular markers to young trees. On one hand, only after plants start yielding can distinct genotypes be differentiated by comparing their fruit sizes, shapes, taste, and the number of seeds. On the other hand, molecular markers are expensive, and demand expertise and time for the analysis of a larger number of plants. For these reasons, the development of techniques that could assist in an early, quick and accurate differentiation of closely related Citrus varieties is of utmost importance. In this context, laser-induced fluorescence spectroscopy (LIFS) is a promising technique, since it is rapid, highly sensitive, and inexpensive. Previous studies showed that LIFS can differentiate a variety of sweet orange. However, this new study aimed to determine LIFS accuracy in the differentiation and grouping of very closely varieties of four Sunki mandarin selections: Comum, Florida, Tropical, and Maravilha. Furthermore we compared the results with ISSR and SSR molecular markers for the same varieties. LIFS technique distinguished the four selections with accuracy greater than 70%. Only with molecular markers was possible distinguishing clearly Tropical from Maravilha, but not Comum from Florida selections. In this way the results suggest that LIFS may be a sound tool for helping the identification of closely Citrus varieties.

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Section: Number Of Alleles Generatedsupporting

confidence: 76%

Section: Number Of Alleles Generatedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rapid Differentiation of Closely Related <i>Citrus Genotypes</i> by Fluorescence Spectroscopy

Santana-Vieira¹,

Milori²,

Boas³

et al. 2014

ABB

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“…Rootstocks of nucellar and diploid Rangpur lime and ‘Sunki Maravilha’ were used in our proteomics experiments. The varieties were selected according to their contrasting responses to water deficit; Rangpur lime is considered to be more tolerant than ‘Sunki Maravilha’ mandarin [ 51 , 17 ]. We used the same plants that were subjected to water deficit analyses in the study conducted by Neves et al [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

Comparative study of the protein profiles of Sunki mandarin and Rangpur lime plants in response to water deficit

et al. 2015

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BackgroundRootstocks play a major role in the tolerance of citrus plants to water deficit by controlling and adjusting the water supply to meet the transpiration demand of the shoots. Alterations in protein abundance in citrus roots are crucial for plant adaptation to water deficit. We performed two-dimensional electrophoresis (2-DE) separation followed by LC/MS/MS to assess the proteome responses of the roots of two citrus rootstocks, Rangpur lime (Citrus limonia Osbeck) and ‘Sunki Maravilha’ (Citrus sunki) mandarin, which show contrasting tolerances to water deficits at the physiological and molecular levels.ResultsChanges in the abundance of 36 and 38 proteins in Rangpur lime and ‘Sunki Maravilha’ mandarin, respectively, were observed via LC/MS/MS in response to water deficit. Multivariate principal component analysis (PCA) of the data revealed major changes in the protein profile of ‘Sunki Maravilha’ in response to water deficit. Additionally, proteomics and systems biology analyses allowed for the general elucidation of the major mechanisms associated with the differential responses to water deficit of both varieties. The defense mechanisms of Rangpur lime included changes in the metabolism of carbohydrates and amino acids as well as in the activation of reactive oxygen species (ROS) detoxification and in the levels of proteins involved in water stress defense. In contrast, the adaptation of ‘Sunki Maravilha’ to stress was aided by the activation of DNA repair and processing proteins.ConclusionsOur study reveals that the levels of a number of proteins involved in various cellular pathways are affected during water deficit in the roots of citrus plants. The results show that acclimatization to water deficit involves specific responses in Rangpur lime and ‘Sunki Maravilha’ mandarin. This study provides insights into the effects of drought on the abundance of proteins in the roots of two varieties of citrus rootstocks. In addition, this work allows for a better understanding of the molecular basis of the response to water deficit in citrus. Further analysis is needed to elucidate the behaviors of the key target proteins involved in this response.Electronic supplementary materialThe online version of this article (doi:10.1186/s12870-015-0416-6) contains supplementary material, which is available to authorized users.

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“…The embryo size is an important attribute in polyembryony since smaller ones are generally found to be inviable due to insufficient food reserve (Andrade-Rodriguez et al, 2005). In citrus, as the number of embryos per seed increases, its size decreases (Soares Filho et al, 2003…”

Section: Issr and Rapd Markers For Identification Of Zygotic And Nucellar Seedlingsmentioning

confidence: 99%

Study of polyembryony and development of molecular markers for identification of zygotic and nucellar seedlings in Khasi mandarin (Citrus reticulata Blanco)

Kashyap¹,

Banu²,

Shrivastava³

et al. 2018

IJEAB

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The objective of this work was to evaluate the occurrence of polyembryonic seedlings and other morphological parameters in Khasi mandarin during three harvest years and to identify zygotic (sexual) seedlings from nucellar (asexual) ones grown under invitro conditions using molecular markers. Embryos from 27 polyembryonic and 7 monoembryonic seeds of Khasi mandarin were grown in-vitro. DNA from seedlings and mother parent was analyzed using 16 ISSR and 5 RAPD primers, of which 4 ISSR and a set of 3 RAPD primers were effective to identify zygotic or nucellar origin of the seedlings. In-vitro culture enables maximum embryos of each seed to grow, favouring the origin of seedlings to be identified as zygotic. Among 69 tested individuals, 37 zygotic and 32 nucellar seedlings were recognized. In polyembryonic and monoembryonic seeds, 59.6% and 42.8% of the seedlings, respectively, have the sexual origin. Morphological characteristics of seeds and the seedlings generated varied significantly and were not correlated with polyembryony except for the clutch size and the number of branches. Polyembryonic seeds in the cultivar are high, ranging from 50.0%, 55.5% to 83.3% over three harvest years with more clutch size and the possibility of obtaining zygotic plants from them is high. In polyembryonic seeds not all zygotic seedlings were produced by small embryos located at the micropyle. Identification of zygotic seedlings by ISSR and RAPD markers in Khasi mandarin cultivar is efficient and reliable at an early developmental stage.

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Maravilha: uma nova seleção de tangerina 'Sunki'

Cited by 10 publications

References 4 publications

Rapid Differentiation of Closely Related <i>Citrus Genotypes</i> by Fluorescence Spectroscopy

Rapid Differentiation of Closely Related <i>Citrus Genotypes</i> by Fluorescence Spectroscopy

Comparative study of the protein profiles of Sunki mandarin and Rangpur lime plants in response to water deficit

Study of polyembryony and development of molecular markers for identification of zygotic and nucellar seedlings in Khasi mandarin (Citrus reticulata Blanco)

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Maravilha: uma nova seleção de tangerina 'Sunki'

Cited by 10 publications

References 4 publications

Rapid Differentiation of Closely Related &lt;i&gt;Citrus Genotypes&lt;/i&gt; by Fluorescence Spectroscopy

Rapid Differentiation of Closely Related &lt;i&gt;Citrus Genotypes&lt;/i&gt; by Fluorescence Spectroscopy

Comparative study of the protein profiles of Sunki mandarin and Rangpur lime plants in response to water deficit

Study of polyembryony and development of molecular markers for identification of zygotic and nucellar seedlings in Khasi mandarin (Citrus reticulata Blanco)

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Rapid Differentiation of Closely Related <i>Citrus Genotypes</i> by Fluorescence Spectroscopy

Rapid Differentiation of Closely Related <i>Citrus Genotypes</i> by Fluorescence Spectroscopy