Reproductive biology and hybridization of Physalis L. species

Júnior, André Dutra Silva; Zeist, André Ricardo; Silva, Daniel Fernandes da; Leal, Murilo Henrique Souza; Oliveira, Guilherme José Almeida; Oliveira, Joana Nascimento Merces de; Youssef, Khamis; Toroco, Bruno da Rocha

doi:10.1007/s40415-022-00811-6

Cited by 3 publications

(4 citation statements)

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“…The pollen viability test was performed according to Douglas and Freyre (2010). Pollen grains were collected from open flowers with tweezers and manual vibration and immediately disposed of on glass slides and a histochemical test was performed (Silva Junior et al, 2022). Three drops of dye solution 0.5 % chloride of 2,3,5-triphenyl tetrazolium (TTC) without sucrose were used in each glass slide.…”

Section: Stigma Receptivity and Pollen Viabilitymentioning

confidence: 99%

“…Unlike prezygotic barriers that operate before fertilization, these barriers can hardly be overcome, making the speciation process irreversible (Roth et al, 2018). The broad definition of intrinsic postzygotic barriers encompasses a variety of developmental failures, which may occur at the beginning of seed development or, in some situations, even due to sterility or unviability of subsequent hybrid generations (Silva Junior et al, 2022).…”

Section: Hybrid Evaluationmentioning

confidence: 99%

“…Many reproductive barriers are genetic mechanisms that remain unclear despite previous studies (Chalivendra et al, 2013;Gao et al, 2015;Muñoz-Sanz et al, 2022). In addition, pollen viability and stigma receptivity also require attention in controlled self-pollinations and crosses, since these features may affect the fruit formation rate (Xu et al, 2012;Silva Junior et al, 2022). This study aimed to evaluate the compatibility of selfpollination, intra-and interspecific controlled crosses, stigma receptivity, and pollen viability in tomatoes to provide the basis for breeding programs.…”

Section: Introductionmentioning

confidence: 99%

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Self-pollination, intra- and interspecific crosses in tomatoes

Zeist

Resende

Silva

et al. 2023

Sci. agric. (Piracicaba, Braz.)

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Tomato genotypes (Solanum spp.) have genetic variability of most desirable features, such as resistance to biotic and abiotic stresses. However, incompatibility of crosses of wild genotypes with domesticated tomatoes, or even between wild genotypes, hinders the breeding process. Thus, knowledge of the reproductive biology of genotypes and conditions is necessary to maximize the success of artificial crossings. This study evaluated the compatibility of self-pollination, intra-and interspecific controlled crosses, stigma receptivity, and pollen viability in tomato genotypes. We used two commercial genotypes S. lycopersicum ('RVTM08' and 'Redenção') and seven accessions of wild tomato genotypes ('AF 26970', 'LA-1401', 'AF 19684', 'LA-1967', 'PI-127826', 'PI-134417', and 'LA-716'). We evaluated all crosses and their reciprocals, besides the self-pollinations. The variables evaluated were fruit index (FI), number of seeds per fruit (SN), and seed germination percentage (GP). Stigma receptivity and grains' pollen viability index (PVI) were also assessed. The results showed that 'LA-1967' was self-incompatible, had a low PVI, and generated fruit without seeds in most crosses. As female parents, 'RVTM08', 'Redenção', 'AF 26970', 'LA-1401', and 'AF 19684' showed higher FI and SN. There was a wide diversity of reproductive characteristics between the genotypes and crosses that did not influence GP. Compatibility of crosses in tomatoes is determined by the female parent choice and can be affected by stigma receptivity and the PVI.

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Section: Stigma Receptivity and Pollen Viabilitymentioning

confidence: 99%

Section: Hybrid Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Self-pollination, intra- and interspecific crosses in tomatoes

Zeist

Resende

Silva

et al. 2023

Sci. agric. (Piracicaba, Braz.)

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“…The genus Physalis belongs to the family Solanaceae, which counts more than 2300 species (Jagatheeswari 2014;Medina-Medrano et al 2015). Its center of diversity is in South and North America and is found particularly in tropical and subtropical countries around the world (Mexico, Colombia, Brazil, China, Japan and some African countries; Silva Junior et al 2022). Several species of the Physalis genus are object of studies, such as Physalis alkekengi L., Physalis angulata L., Physalis ixocarpa Brot., Physalis minima L., Physalis peruviana L. and Physalis philadelphica Brot.…”

Section: Introductionmentioning

confidence: 99%

Performance and repeatability in fruit traits of Physalis angulata L. accessions

Toupe,

Lima,

de Oliveira Souza

et al. 2024

Genet Resour Crop Evol

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Desempenho e repetibilidade de características de frutos de acessos de Physalis angulata L..

Silva

2023

Preprint

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The Physalis angulata L. species, better known in Brazil as camapu, is most found in the northern regions of the country. It is used for human consumption, in medicine and as an ornamental plant. Because of its potential economic and nutritional value, studies have carried out to known the genetic variability of fruit traits. Repeatability is the fraction of phenotypic variation that is due to permanent genetic and environmental factors. The estimation of repeatability coefficient allows breeders to estimate the ideal number of measurements for a trait. This work aims to evaluate the performance of P. angulata accessions and to estimate the coefficients of repeatability and minimum number of repetitions for fruit characteristics, in two environments and two seasons. The present work was conducted at the Horto Florestal Experimental Unity of Universidade Estadual de Feira de Santana, using seven accessions of P. angulata from the Germplasm Collection of LAGEM/UEFS. Four experiments were conducted, two in the experimental field and two in the greenhouse, in an entirely randomized design with 24 replicates, using five accessions in the first two experiments, and six accessions in the last two in each environment, totaling 120 and 144 experimental units, respectively. The characteristics number of fruits per plant (NFP), soluble solids content (SSC), longitudinal diameter (LFD) and transversal diameter (TFD) of the fruits, and average fruit mass (AFM) were evaluated. Data were submitted to analysis of variance (ANOVA) and estimates of repeatability coefficients were obtained by ANOVA, principal components (PC), and structural analysis (SA) methods. There was significant variance among accessions for the characteristics LFD, TFD, AFM and SSC in the experimental field, and for TFD, LFD NFP in the greenhouse. Heritability ranged from 61.63–91.91% in both environments. PC showed the highest estimates of repeatability coefficient. The repeatability and determination coefficients by PC analysis ranged from TFD (r = 0.51; R2 = 96.19%) to SSC (r = 0.72; R2 = 98.47) in the field, and from NFP (r = 0.40; R2 = 93.92%) to LFD (r = 0.51; R2 = 79.38%) in the greenhouse. Twenty measurements can achieve 95% and 90% reliability for experimental field and greenhouse experiments, respectively, for the evaluated traits.

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Reproductive biology and hybridization of Physalis L. species

Cited by 3 publications

References 42 publications

Self-pollination, intra- and interspecific crosses in tomatoes

Self-pollination, intra- and interspecific crosses in tomatoes

Performance and repeatability in fruit traits of Physalis angulata L. accessions

Desempenho e repetibilidade de características de frutos de acessos de Physalis angulata L..

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