Auto-incompatibilidade em plantas

Schifino-Wittmann, María Teresa; Dall'Agnol, Miguel

doi:10.1590/s0103-84782002000600027

Cited by 20 publications

(8 citation statements)

References 48 publications

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“…Further studies are needed to technically assess the compatibility between genotype of Coffea canephora, in order to identify the interaction of the materials for planting indication to farmers. Knowledge of compatibility or self-incompatibility between genotypes allows for increased productivity and final uniformity in Coffee cultivation (Ferrão et al, 2017;Schifino-Wittmann & Dall'agnol, 2002).…”

Section: Resultsmentioning

confidence: 99%

Compatibility Test and Agronomic Performance of Coffee Genotypes (Coffea canephora Pierre ex Froehner) in the State of Rondônia, Brazil

Silva¹,

Silva²,

Damaceno³

et al. 2019

JAS

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The objective of this work was to evaluate the degree of compatibility and agronomic performance in clonal genotypes of canephora coffee plants (Coffea canephora ex Froehner) for cultivation in the state of Rondônia, Brazil. The study was conducted with nine genotypes with three replications of Coffea canephora Arranged in the field: UFRO-60; UFRO-31; UFRO-61; UFRO-25; UFRO-03; UFRO-08; UFRO-21; UFRO-05 and UFRO-138 In adulthood and in two years of harvest (2013/2014 and 2014/2015). We evaluated: productivity, profitability, conversion index fruit cherry/grain benefited, mass of one hundred grains benefited, average diameter of the fruits, number of rosettes per branch, average distance between rosettes and number of fruits per rosette. Additionally, the degree of compatibility between the clones of clonal. The genotypes of Coffea canephora with the best agronomic performances evaluated for the edafoclimatic conditions of the State of Rondônia in this study were UFRO-08, UFRO-25, UFRO-03 and UFRO-138. According to the compatibility tests, the sequence of correct disposition in the field of Coffea canephora among the genotypes studied in this study are: UFRO-138; UFRO-31; UFRO-25; UFRO-08; UFRO-60; UFRO-21; UFRO-61; UFRO-03 and; UFRO-05. Close to 74% of the tests Were and self-pollination tests resulted in low fruiting, evidencing the characteristic of self-incompatibility.

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Section: Resultsmentioning

confidence: 99%

Compatibility Test and Agronomic Performance of Coffee Genotypes (Coffea canephora Pierre ex Froehner) in the State of Rondônia, Brazil

Silva¹,

Silva²,

Damaceno³

et al. 2019

JAS

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“…In addition, it should be considered that most Brassica species are self-incompatible; therefore, insect visits are necessary for seed production [6,29]. In Brassica species with auto incompatibility (AI), incompatible pollen grains barely germinate on stigma and, when germinated, their pollen tubes fail to grow on papillary cells on the stigmatic surface [30]. Self-incompatibility is a widespread mechanism in flowering plants that prevent self-fertilization.…”

Section: Pollination Requirements In Rapeseed Flowersmentioning

confidence: 99%

Benefits of Entomophile Pollination in Crops of Brassica napus and Aspects of Plant Floral Biology

Chambó¹,

Camargo²,

Garcia³

et al. 2018

Brassica Germplasm - Characterization, Breeding and Utilization

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Rapeseed (Brassica napus L. var. oleifera) is an oleaginous species of the Brassicaceae family, being the third most produced oleaginous in the world. Rapeseed can produce fruits and seeds from both self-pollination and cross-pollination. However, cross-pollination rate is approximately 30% and may suffer variations due to the abundance and diversity of pollinator insects, cultivar and meteorological conditions. Different researchers have reported that pollination by insects, especially Apis mellifera honeybee, on rapeseed flowers provides an increase in productivity, improving yield and contributing to the uniformity and initial pod establishment. It is estimated that the economic value of A. mellifera honeybees for rapeseed cultivation in Brazil is US$ 8.2 million. The objective of this chapter is gathering data for a compilation of information regarding rapeseed culture and the importance of A. mellifera in Brassica napus pollination.

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“…The ornamental potential of the genus is highly valued in Europe and North America and many of the varieties used for this purpose are derived from interspecific hybrids (Abreu et al, 2009). Interspecific hybrids are comparatively easy to generate in this genus because of weak reproductive barriers and weak self-incompatibility; these characteristics are a hallmark of the genus (Schifino-Wittmann and Dall'Agnol, 2002). In general, interspecific hybridization has been the main strategy used for breeding ornamental Passiflora varieties and for the improvement of quantitative and qualitative characteristics of the plants and the development of genotypes with unique characteristics for the ornamental plant market (Abreu et al, 2009;Belo, 2010;Santos et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Multivariate analysis of backcross progeny of Passiflora L. (Passifloraceae) for pre-breeding genotype selection

Melo¹,

Souza²,

Sousa³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. The Ward-MLM procedure was used to evaluate genetic variation in four backcross progenies and in their parents, hybrid F1 HD13 and donor parent Passiflora sublanceolata. Sixteen quantitative descriptors and five qualitative characteristics of relevance to ornamental flower production were assessed. Using the pseudo-F and pseudo-T² criteria, we identified four groups among these plants in two evaluation periods. In both evaluations, the BC 1 plants showed greater dissimilarity to their recurrent parent, but showed high genetic similarity with the P. sublanceolata parent. The first two canonical variables produced by the Ward-MLM procedure accounted for over 90% of the variation in both evaluation periods, enabling the representation of diversity through two-dimensional graphics. Groups II and IV were formed in the first assessment period. Groups I and IV formed in the second period and showed plants with selection potential. We found that it was essential to use both qualitative and quantitative variables for this analysis. Assessments of quantitative descriptors indicate that the 15377 Genetic diversity for Passiflora breeding ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (4): 15376-15389 (2015) selection of BC 1 plants can be performed in any of the four progenies. Because of the similarities observed for some floral descriptors between BC 1 and the P. sublanceolata parent, a second generation backcross was not recommended. However, the selection of BC 1 plants for evaluation and direct use as an ornamental cultivar, or as a resource in other breeding programs, can be recommended.

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Auto-incompatibilidade em plantas

Cited by 20 publications

References 48 publications

Compatibility Test and Agronomic Performance of Coffee Genotypes (Coffea canephora Pierre ex Froehner) in the State of Rondônia, Brazil

Compatibility Test and Agronomic Performance of Coffee Genotypes (Coffea canephora Pierre ex Froehner) in the State of Rondônia, Brazil

Benefits of Entomophile Pollination in Crops of Brassica napus and Aspects of Plant Floral Biology

Multivariate analysis of backcross progeny of Passiflora L. (Passifloraceae) for pre-breeding genotype selection

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