Predição de ganhos genéticos e seleção de progênies de mamoeiro para resistência à pinta-preta

Vivas, Marcelo; Silveira, Silvaldo Felipe da; Vivas, Janieli Maganha Silva; Pereira, Messias Gonzaga

doi:10.1590/s1982-56762013000200008

Cited by 18 publications

(20 citation statements)

References 17 publications

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“…However, the field experiment is vulnerable to unbalanced data due to various reasons. In the present study, data imbalance was caused by segregation of dioecious progenies into female and male flowers (Vivas et al, 2013b).…”

Section: Introductionmentioning

confidence: 67%

“…To increase the genetic basis, we can make use of landrace varieties. In this context, different studies have reported the use of landrace genotypes for increased genetic variability and frequency of genes for adaptation, rusticity and resistance to biotic and abiotic stress (Medeiros et al, 2008, Neitzke et al, 2009, Vivas et al, 20122013b).…”

Section: Introductionmentioning

confidence: 99%

“…In June 2011, when the disease occurred naturally in the field, only plants with female flowers were evaluated for the incidence and severity of phoma-spot. Plants with male flowers were not selected by Vivas et al (2013b) and eliminated to avoid contamination with unwanted pollen. Incidence (%) of leaves with symptoms of phoma-spot was calculated as the ratio of number of leaves with symptoms by the total number of leaves per plant multiplied by one hundred.…”

Section: Introductionmentioning

confidence: 99%

“…It is important to emphasize that selection from the additive genetic effect facilitates the achievement of superior plants, because we discarded plants with phenotypic values higher than the selected plants. Another point to be mentioned is the possibility of genetic gains for both the resistance tophoma-spot and black spot (Vivas et al, 2012(Vivas et al, , 2013b.These authors found that the progenies 'STA-02', 'STA-04', 'STA-08', 'STA-13', 'STA-15' and 'STA-16' were the most promising for reducing the severity of black spot in papaya leaves and for increasing the number of leaves without symptoms of black spot. Vivas et al (2013b), used the index of Mulamba and Mock (1978) to select the best 10 progenies and pointed beyond those described by Vivas et al (2012), the progenies 'STA-05', 'STA-17', 'STA-22' and 'STA-24'.…”

Section: Introductionmentioning

confidence: 99%

“…Another point to be mentioned is the possibility of genetic gains for both the resistance tophoma-spot and black spot (Vivas et al, 2012(Vivas et al, , 2013b.These authors found that the progenies 'STA-02', 'STA-04', 'STA-08', 'STA-13', 'STA-15' and 'STA-16' were the most promising for reducing the severity of black spot in papaya leaves and for increasing the number of leaves without symptoms of black spot. Vivas et al (2013b), used the index of Mulamba and Mock (1978) to select the best 10 progenies and pointed beyond those described by Vivas et al (2012), the progenies 'STA-05', 'STA-17', 'STA-22' and 'STA-24'. Thus, based on our results and the results presented in the aforementioned studies, it is concluded that the progenies 'STA-02', 'STA-04', 'STA-05', 'STA-16' and 'STA-22' have the potential to reduce both diseases: black spot and phoma-spot.…”

Section: Introductionmentioning

confidence: 99%

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Seleção de progênies femininas de mamoeiro para resistência a mancha-de-phoma via modelos mistos

et al. 2014

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Landrace genotypes present sources of genes for adaptation, rusticity and resistance to diseases and environmental stress. This study evaluated the potential of landrace papaya genotypes in contributing to phoma-spot resistance genes. The experiment was a randomized block design with six replications consisted of 24 half-sib progenies of dioecious papaya -which segregated for sex. Only plants with female flowers were evaluated. We used mixed models to estimate variance components and the genetic value of landraces to incidence and severity of phoma-spot. Heritability estimates and selective accuracy demonstrated a favorable situation to the selection of resistant progenies ,especially 'STA-02', 'STA-04', 'STA-05', 'STA-06', 'STA-07', 'STA-11', 'STA-12', 'STA-16', 'STA-21' and 'STA-22', which showed negative values of additive genetic effects for both incidence and severity of phoma-spot.

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Section: Introductionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Seleção de progênies femininas de mamoeiro para resistência a mancha-de-phoma via modelos mistos

et al. 2014

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Prospection of genotypes resistant to black spot in half‐sib families of papaya

et al. 2021

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Papaya (Carica papaya L.) breeding is a complex task; furthermore, Carica papaya has a sexual chromosome and is difficult to make crosses. One of the most critical papaya crop diseases is black spot, which is caused by Asperisporium caricae (Speg.) MaublSince . Therefore, we used half-sib families to combine genetic gains on the yield and resistance traits to papaya black spot. In this scenario, the present study proposed to select papaya genotypes more resistant to black spot from half-sib families.Five parents with superior attributes related to black spot resistance were pollinated with a pollen mixture from five parents considered "elite" for agronomic traits, thus generating five half-sib families. The half-sib families were evaluated for black spot resistance in a greenhouse with two control cultivars ('Golden' and 'Maradol'), for 75 d, at 15-d intervals, totaling five evaluations. The families exhibited genetic variability for all traits associated with disease resistance, surpassing even the Golden and Maradol controls. The traits associated with severity by papaya black spot are more efficient to distinguish resistance genotypes using principal components analysis, like mean incidence of black spot (MSBS) (cosš = 0.794) and area under the disease progress curve (AUDPC) (cosš = 0.697). The recommended progeny for resistance to black spot are M-1.4, M-1.5, M-3.1, M-3.3, M-2.5, and M-4.5, as they showed lower values of mean severity of black spot, MIBS, and AUDPC. These progenies from half-sib families overcame the resistant control genotype Maradol as potential to combining resistance to papaya black spot with superior agronomic traits. INTRODUCTIONBlack spot, caused by the fungus Asperisporium caricae (Speg.) Maubl, is a disease of high economic relevance for the papaya crop (Carica papaya L.) worldwide. The disease Abbreviations: AUDPC, area under the disease progress curve; MIBS, mean incidence of black spot; MSBS, mean severity of black spot.

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Identification of papaya hybrids resistant to Stagonosporopsis caricae by heterosis: a possible reality?

et al. 2019

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Predição de ganhos genéticos e seleção de progênies de mamoeiro para resistência à pinta-preta

Cited by 18 publications

References 17 publications

Seleção de progênies femininas de mamoeiro para resistência a mancha-de-phoma via modelos mistos

Seleção de progênies femininas de mamoeiro para resistência a mancha-de-phoma via modelos mistos

Prospection of genotypes resistant to black spot in half‐sib families of papaya

Identification of papaya hybrids resistant to Stagonosporopsis caricae by heterosis: a possible reality?

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