Inheritance pattern of fire blight resistance in pear

Evrenosoğlu, Yasemin; Mertoğlu, Kerem; Bilgin, Nihal Acarsoy; Mısırlı, Adalet; Özsoy, Abdullah Nuri

doi:10.1016/j.scienta.2018.11.069

Cited by 12 publications

(7 citation statements)

References 37 publications

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“…However, the fact that seeds obtained from fruits with red fruit flesh were more resistant to salinity-induced stress can be interpreted as the effect of the maternal environment. The maternal environment, defined as the maternal parent effects other than gene effects, has shown significant effects on resistance to different biotic and abiotic stress conditions [10,48]. Considering the fact that saline and arid areas will increase under the current global climate change, H. polyrhizus cultivars may be promising as parents in hybridizations in order to develop stress-resistant genotypes with superior fruit characteristics such as high antioxidant activity due to their diverse and higher phytochemicals [49], in addition to their resistance [16].…”

Section: Resultsmentioning

confidence: 99%

“…For this reason, recently, efforts have been accelerated to develop early, middle and late varieties with high yield and attractiveness, resistant to biotic and abiotic stress conditions in combination, self-fertile, rich in chemicals with high antioxidant effects, suitable for different cultivation systems (open/greenhouse) [9]. Due to the quantitative nature of the desired traits and the complexity of inheritance mechanisms, hybrid breeding is still the most widely used method [10]. However, information on the factors affecting the germination of cactus seeds from the genus Hylocereus is very limited [11].…”

Section: Introductionmentioning

confidence: 99%

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Maternal Environment and Priming Agents Effect Germination and Seedling Quality in Pitaya under Salt Stress

Kenanoğlu,

Mertoğlu,

Sülüşoğlu Durul

et al. 2023

Horticulturae

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Lack of water and salinity are common problems in many parts of the world. Therefore, some types of cacti can present as promising crops. Therefore, the ability of cactus species to survive and adapt under natural stress conditions should be evaluated. The experiment was aimed at evaluating the effect of salt stress on germination and emergence of pitaya seeds obtained from different species (Hyloceresu undatus (Haw.) Britton and Rose and Hylocereus polyrhizus (Lem.) Britton and Rose), priming with plant growth regulators, namely salicylic acid (SA), oxalic acid (OA) and mepiquat chloride (MC). The experiment had a completely randomized design with a 2 × 4 × 3 factorial scheme corresponding to two pitaya cultivars (white- and red-fleshed), four NaCl concentrations (0, 2500, 5000 and 10,000 ppm), and three PGRs (150 ppm/MC, SA, OC). According to the results, the maternal environment of the seed was important in salt stress resistance, while seeds matured in the environment with red fruit flesh were more tolerant to salt stress. Although Pitaya species are relatively salt-tolerant, growth (about 30%) was significantly reduced above 2500 ppm and germination (about 45%) above 5000 ppm. Germination percentage stood out as the most important trait determining seed quality and had positive effects on the germination stress tolerance index (r: 0.63), seedling length (r: 0.74) and fresh seedling weight (r: 0.56). This is the first study of how maternal environment affects germination and seedling quality under saline conditions in Hylocereus. The results obtained may contribute to pitaya cultivation and breeding.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Maternal Environment and Priming Agents Effect Germination and Seedling Quality in Pitaya under Salt Stress

Kenanoğlu,

Mertoğlu,

Sülüşoğlu Durul

et al. 2023

Horticulturae

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“…Previous studies have shown that many widely cultivated cultivars, recognized for their overall value and fruit quality, are highly susceptible to fire blight [ 81 , 82 , 83 ], and the need for fire-blight-resistant cultivars is considered more pressing than ever [ 84 ]. There are various sources of genes identified for resistance to E. amylovora [ 85 , 86 , 87 ], and controlled hybridization is commonly used in breeding programs due to the generally polygenic nature of fire blight resistance and the complexity of its mechanism [ 88 , 89 , 90 ]. Probably, the complexity of genotypes’ responses and their inconstancy to fire blight attack emerged in the current study from their random classification in attack classes, without the frequency of the distribution resembling a quantitative histogram.…”

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of Phenotypic and Molecular Data on Response to Main Pear Diseases and Pest Attack in a Germplasm Collection

Mărcășan

Oltean

Popa

et al. 2023

IJMS

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The pear is an important fruit tree in temperate areas, but due to its sensitivity, fruit yield and quality are often affected by disease and pest attacks. Pear genotypes from a germplasm collection comprising 13 Pyrus species, 17 Romanian varieties, and 50 non-Romanian varieties from a worldwide assortment were investigated in this study. Throughout four years, response to attack of the principal pathogens and pests was investigated phenotypically under natural conditions of infection and infestation. SSR markers were used to analyze the genetic diversity of the genotypes. A standardized method for the evaluation of responses to biotic stressors was proposed, which highlighted significant differences between genotypes. The species and varieties with the lowest degrees of attack (DA%), calculated based on the frequency and intensity of attack, were identified for pear scab (Venturia pyrina), septoria (Septoria pyricola), fire blight (Erwinia amylovora), and psyllids (Psylla sp.). These accessions could provide valuable sources of genes of interest to develop resistant varieties in new pear breeding programs. By combining phenotypic and molecular analyses, significant information was obtained that can be exploited to generate high variability for selection through artificial hybridization by harnessing accessions with complementary molecular fingerprints and high genetic distances.

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“…As a result of breeding studies, the new genotypes may contain the genes that provide resistance to biotic and abiotic stress conditions as much as possible, with a broad genetic base (Sekhwal et al, 2015). At this point, before the breeding studies, it is the most important criterion that the use of genetic pool as rich as possible to be able to choose the variety that will serve the desired characteristics (Dumanoglu et al, 2018;Evrenosoğlu et al, 2019). In the last periods of the production season, when the winter fruits are not yet in the market, the lack of product as variety and quantity in the market increases the importance of fall cultivar breeding.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Fall Pear Variety Candidates Obtained by Hybridization in Terms of Fire Blight Disease Resistance, Pomological and Commercial Values

Mertoğlu¹,

Evrenosoğlu²,

Yeşilbaş³

et al. 2020

Ege Üniversitesi Ziraat Fakültesi Dergisi

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Objective: In this research, evaluations of F1 fall pear hybrids, that obtained from different cross combinations, were made to contribute to our country' s agriculture and gene pool.Material and Methods: 11 hybrids investigated in this research were obtained from the cross combinations that 'Magness' , 'Kiefer' , 'Williams' and 'Santa Maria' cultivars were maternal and, 'Güz' , 'Santa Maria' and 'Kiefer' cultivars were used as pollinator parents. Susceptibilities of those hybrids to fire blight disease, pomological and biochemical characteristics were determinated. Besides, sensory parameters were added to the data attained by the measurements, and promising hybrids were detected through the modified weighted ranking method.Results: Fruit width, fruit length, shape index, fruit weight, fruit firmness, soluble solid content, pH, titratable acidity, vitamin C and antioxidant activity characteristics were varied between 53.22 -84.25 mm, 52.91 -105.01 mm, 0.95 -1.62, 86.51 -317.70 g, 3.32 -8.41 kg/cm2, %8.77 -16.53, 3.52 -4.73, %0.14 -0.59, 0.53 -3.17 mg.L-1 and %26.43 -%75.09, respectively. Eight hybrids were evaluated as promising fall cultivars through the modified weighted ranking method.Conclusions: Due to the lack of a definite solution against fire blight, the chemicals used are harmful to human health and organic cultivation is becoming more widespread, the pears with high fruit quality parameters and disease resistant hybrids will come to the fore in the near future, it is thought that the hybrids (2-12-43, 2-15-93, 2-12-47, 1-17-20, 3-36-87, 2-33-32, 2-15-33 and 1-16-130) transferred to the forward observation plot will contribute to pear cultivation by registering in the following period. ÖZAmaç: Bu çalışmada, farklı melezleme kombinasyonları sonucu elde edilen güzlük F1 armut melezlerinin, ülke tarımına ve genetik havuza katkı sağlaması amaçları doğrultusunda, değerlendirmeleri yapılmıştır.

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Inheritance pattern of fire blight resistance in pear

Cited by 12 publications

References 37 publications

Maternal Environment and Priming Agents Effect Germination and Seedling Quality in Pitaya under Salt Stress

Maternal Environment and Priming Agents Effect Germination and Seedling Quality in Pitaya under Salt Stress

Comparative Analysis of Phenotypic and Molecular Data on Response to Main Pear Diseases and Pest Attack in a Germplasm Collection

Evaluation of Fall Pear Variety Candidates Obtained by Hybridization in Terms of Fire Blight Disease Resistance, Pomological and Commercial Values

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