The inheritance of late blight resistance derived from Solanum habrochaites

Elsayed, Ahmed Youssef Abdelnabi Mohamed; Silva, Derly José Henriques da; Carneiro, Pedro Crescêncio Souza; Mizubuti, Eduardo S. G.

doi:10.1590/s1984-70332012000300006

Cited by 13 publications

(12 citation statements)

References 21 publications

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“…This distribution confirms the F 1 individuals' fact that hegemony is sensitive to resistance. These results agree with the results were obtained by Elsayed et al, (2012) and Ramadan and Kamel (2014). The result showed that, Edkawy cultivar was a susceptible and the severity at the end of epidemic mean was 68.63% , while 21.97% for the resistant cultivar L03684.…”

Section: Resultssupporting

confidence: 92%

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Inheritance of Resistance against Phytophthora Infestans in Wiled Tomato Genotype (Lycopersicon hirsutum l03684) وراثة المقاومة للندوة المتاخرة فی الترکیب الوراثی البری L03684 التابع للنوع Lycopersicon hirsutum

العفیفی¹,

السید²,

السعدی³

et al. 2019

Journal of Plant Production

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Many varieties commercial's tomatoes have been grown in Egypt but most of them susceptible to the disease of late blight, which are very important and most dangerous fungal diseases that destroy the tomato crop in all its parts caused by the disease Phytophthora infestans. The L03684 wild tomato genotype was obtained from the Asian Development Center for Vegetables. The inter specific cross between L03684 and Edkawi species was done to obtained the six populations and study resistance of Late blight heredity, and assessment of genetic parameter for resistance. Results showed that, Many genes control the heredity of resistance to P. Infestans and resistant is inherited as a quantitative trait. While, susceptibility to late blight is a dominant characteristic of resistance. The heritability in broad (H b.s %) estimates were 71.8 and in narrow sense (H n.s %) estimates were 39.35% for severity detect the proportion of the environmental factors on the total variation. the inheritance of resistance to P. infestans greatly affected by dominance gene effects. While that, gene effects of estimations were low. So the effects of gene refers to epistasis more important than the additive. This study showed that, the inter actions between additive and dominance were highly significant in the inheritance of resistance to P. infestans. One of the best methods to breeding to improve this resistance by the reciprocal recurrent selection.

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Section: Resultssupporting

confidence: 92%

“…; (2) moderate 30-69% and (3) susceptible 70-99%, that depending on the parent's interval rang. (Elsayed et al, 2012).…”

Section: Data and Statistical Analysismentioning

confidence: 99%

Inheritance of Resistance against Phytophthora Infestans in Wiled Tomato Genotype (Lycopersicon hirsutum l03684) وراثة المقاومة للندوة المتاخرة فی الترکیب الوراثی البری L03684 التابع للنوع Lycopersicon hirsutum

العفیفی¹,

السید²,

السعدی³

et al. 2019

Journal of Plant Production

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“…Therefore, the weather conditions were very favourable for the increased disease appearance on the tested genotypes. The most effective and reliable methods for observing differences to late blight infection among genotypes are generally accepted to be natural infections or inoculated test plots under field conditions (Elsayed et al, 2012). Our data are in agreement to data obtained by Milošević (2014), who reported that the occurrence of potato late blight in Serbia and the region during 2014 had an epiphytotic character.…”

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confidence: 91%

Preliminary results of resistance of tomato accessions to late blight (Phytophthora infestans (Mont.) de Bary)

Medić-Pap¹,

Danojević²,

Takač³

et al. 2017

Ratar i povrt

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Summary: Late blight (LB) caused by Phytophthora infestans (Mont) de Bary is a highly destructive disease of tomato and appears worldwide. The losses caused by late blight depend on several factors, but main are weather conditions, genotype and amount of inoculum. The aim of this paper was to determine the reaction to the late blight in ten tomato genotypes under conditions of natural infection and to detect the potential sources of resistance. These genotypes are from tomato seed collection of Institute of Field and Vegetable Crops. Two wild Solanum species (S. pimpinellifolium and S. habrochaites), four varieties, two lines and one population were included in the trial. Weather conditions in Serbia in 2014 were very favourable for the disease development. Six assessments of LB intensity were performed from the end of June until the beginning of September. Per each genotype twenty four plants were evaluated according to 0-9 scale. Obtained data were transformed to percent and analysed by Kruskal-Wallis test. Intensity of LB symptoms on tomato plants in the second and third assessment in July was very low, up to 10%. In the following evaluations, the level of the infection increased and in the final assessment, wild species and local population grouped as less susceptible to the disease. However, the intensity of late blight, under extremely favourable weather conditions, was also high, 50% on wild species S. pimpinellifolium and S. habrochaites and 70% on local population Volovsko srce.

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“…Similar conclusions were found by Nkalubo et al (2009) and Elsayed et al (2011), who found that a great variability of GCA between different parents in addition to high values of mean squares of GCA over the SCA which indicating the role of additive effect in controlling the trait under study. In similar study, Elsayed et al, 2012 demonstrated that two recessive genes controlling the resistance in the inbred line '163A' with additivedominance model confirming the absence of epistasis.The segregation ratio of the F 2 population, 9:6:1, indicated that the resistant in the '163A' requires a homozygous recessive genotype beside Ph-3 gene. Probably these recessive factors not linked to Ph-3, while Ph-3 gene present minor frequency of resistance overcame (25.8%) compared to Ph-1 and Ph-2, 88.7 % and 64.5 %, respectively (Miranda et al 2010) exhibited fixed resistance against the current isolates (Elsayed et al 2011).…”

Section: Combining Ability Variancesmentioning

confidence: 63%

“…The performance stability of P8 '163A' against the pathogen was tested by Elsayed et al (2012), who reported that two recessive genes controlling the resistance of 163A line. In addition, the same authors demonstrated that the scaling test of additive-dominance model showed good fit for the data confirming the absence or neglect of epistasis.…”

Section: Introductionmentioning

confidence: 99%

THE PERFORMANCE OF LATE BLIGHT GENE Ph-3 IN TOMATO UNDER THE EFFECT OF LOCAL POPULATIONS FROM Phytophthora infestans

Elsayed

El-Said

Elsherbiny

2016

Journal of Plant Production

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Since late blight has become a frequent problem in Egypt, it's important to develop tomato varieties resistant or tolerant to this pathogen. The aim of this research was to assay the performance of late blight resistance gene Ph-3 transferred to some breeding lines and tomato varieties. Five lines (P5, P39, P17, Super marminde and Edkawy) and 3 testers (NC 2 CELBR, NC 25P and 163A) were used in a partial diallel mating desing to generate 15 F1 hybrids. Two individuals greenhouse experiments were conducted for screening the genotypes and evaluation their potencial for faverable traits. The parental varieties and their 15 F 1 crosses were screened against late blight under the artificial inoculation with local P. infestans strains. Three disease variables; severity at the end of epidemic (% DS), severity at the half way epidemic (Y 50) and the area under the disease progress curve (AUDPC) were used in the screening of resistance. The % DS ranged from 88 % to100 % for the susceptible parental lines while this rate did not exist 21 % for the resistant testes group until the end of the evaluation period. The majority of F1 hybrids exhibited acceptable level of resistance per si, except the crosses resulted from the P05 and P39 with 163A, NC 2 CELBR and NC 25P. Both additive and non-additive gene effects were involved in the inheritance of the resistance to late blight. Mean square values of GCA were larger than SCA for all disease variables where the estimated ratio GCA/SCA were more than 1.00 which indicated that the additive gene effects were more important than the non-additive effects in the inheritance of resistance. Heterosis relative to resistant parent (H 2) for % DS ranged from-5.825 % to-37.71 %. Whereas, it was ranged from-43.94 % to-78.95% for AUDPC. Highly and significant heterosis for number of branches, yield and lycopen content were noticed in the hybrid P4 x NC 25P which may be due to sumptuous growth nature of S. habrochaites. The majority of hybrids showed negative heterosis for average fruit weight, while only the hybrid S.marminde x NC 2 CELBR have significant positive heterosis and hybrid vigor. The crosses P39 x NC 25P, P17 x NC 25P and S. marminde x NC25P were the most promising crosses having high frequency of favorable alleles with high genetic variability for selection in the advanced generations.

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The inheritance of late blight resistance derived from Solanum habrochaites

Abstract: -Late blight caused by the oomycete Phytophthora infestans is a destructive disease of tomato in

Cited by 13 publications

References 21 publications

Inheritance of Resistance against Phytophthora Infestans in Wiled Tomato Genotype (Lycopersicon hirsutum l03684) وراثة المقاومة للندوة المتاخرة فی الترکیب الوراثی البری L03684 التابع للنوع Lycopersicon hirsutum

Inheritance of Resistance against Phytophthora Infestans in Wiled Tomato Genotype (Lycopersicon hirsutum l03684) وراثة المقاومة للندوة المتاخرة فی الترکیب الوراثی البری L03684 التابع للنوع Lycopersicon hirsutum

Preliminary results of resistance of tomato accessions to late blight (Phytophthora infestans (Mont.) de Bary)

THE PERFORMANCE OF LATE BLIGHT GENE Ph-3 IN TOMATO UNDER THE EFFECT OF LOCAL POPULATIONS FROM Phytophthora infestans

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