Inheritance of resistance of two pea lines to powdery mildew

León, Diana P.; Checa, Oscar; Obando, Paula A.

doi:10.1002/agj2.20253

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…The lines of this group were less susceptible to powdery mildew. Erysiphe pisi (Ep) is the main causal agent of powdery mildew (PM) in peas and is responsible for 25-80% losses in yield worldwide (León et al, 2020;Nisar et al, 2006).…”

Section: Principal Component Analysismentioning

confidence: 99%

Morphological characterization and hierarchical classification of 40 bush pea genotypes (Pisum sativum L.)

Rosero-Lombana

Coral

2021

Rev. Colomb. Cienc. Hortic.

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The Universidad de Nariño is home to a collection of bush pea plantlets that are a source of biodiversity for the genetic improvement of pea species in Colombia. The characterization of these accessions is required to identify genotypes with attributes that could be used in the search for new varieties. For the morphological characterization, 40 pea accessions were planted in Pasto, Colombia. 23 quantitative variables and 12 qualitative variables were documented, descriptors proposed for this species by the European Union in 2003. The data were subjected to Principal Component Analysis and Multiple Correspondence Analysis. Finally, a hierarchical classification method was applied using Ward’s method. The first four components, which explained 78.80% of the total variability of the population, were selected for the quantitative variables. Four groups were identified. Genotypes with the afila gene, which are of interest for pea breeding programs, were found in groups 1 and 2. The highest seed weight was in group 1, and the genotypes with the best reaction to powdery mildew were in group four. For the qualitative variables, the first six factors, which described 60.51% of the variability, were selected, and the hierarchical classification analysis resulted in five groups. The qualitative characteristics that contributed more to the differentiation of the groups included leaflet type, hilum color, degree of curvature of the pod, color and shape of the grain.

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Section: Principal Component Analysismentioning

confidence: 99%

Morphological characterization and hierarchical classification of 40 bush pea genotypes (Pisum sativum L.)

Rosero-Lombana

Coral

2021

Rev. Colomb. Cienc. Hortic.

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“…Different PM disease scoring scales have been proposed by different researchers and the scales of 0-4, 0-5, 1-5, 0-9, and 0-10 have been used for scoring the PM disease (Table 1). ≤ 20% = R [35] Where R: Resistant; MR: Moderately Resistant.…”

Section: Pm Disease Scale In Peamentioning

confidence: 99%

“…Studies on the inheritance of PM disease revealed three genes, namely er1, er2 and Er3, conferring resistance to Erysiphe species [22], (Figure 2). An investigation into the genetics of powdery mildew resistance (PMR) has been carried out in the past, which has shown different modes of inheritance including single recessive [35,36], single dominant [9,37] and duplicate recessive gene actions [38,39] (Table 2). Hammarlund [19] was the first to investigate PM resistance in peas and reported cumulative factors for susceptibility.…”

Section: Geneticsmentioning

confidence: 99%

Gene-Based Resistance to Erysiphe Species Causing Powdery Mildew Disease in Peas (Pisum sativum L.)

Devi

Mishra

Sagar

et al. 2022

Genes

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Globally powdery mildew (PM) is one of the major diseases of the pea caused by Erysiphe pisi. Besides, two other species viz. Erysiphe trifolii and Erysiphe baeumleri have also been identified to infect the pea plant. To date, three resistant genes, namely er1, er2 and Er3 located on linkage groups VI, III and IV respectively were identified. Studies have shown the er1 gene to be a Pisum sativum Mildew resistance Locus ‘O’ homologue and subsequent analysis has identified eleven alleles namely er1–1 to er1–11. Despite reports mentioning the breakdown of er1 gene-mediated PM resistance by E. pisi and E. trifolii, it is still the most widely deployed gene in PM resistance breeding programmes across the world. Several linked DNA markers have been reported in different mapping populations with varying linkage distances and effectiveness, which were used by breeders to develop PM-resistant pea cultivars through marker assisted selection. This review summarizes the genetics of PM resistance and its mechanism, allelic variations of the er gene, marker linkage and future strategies to exploit this information for targeted PM resistance breeding in Pisum.

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“…Different modes of inheritance i.e. single recessive 12 , 13 , single dominant 14 , 15 and duplicate recessive gene action 16 , 17 have been reported for powdery mildew resistance. The recessive ‘er1’ gene is responsible for resistance to majority of the naturally occurring powdery mildew disease 18 – 21 and was commonly used in pea breeding for development of PMR cultivars.…”

Section: Introductionmentioning

confidence: 99%

In vivo and in vitro validation of powdery mildew resistance in garden pea genotypes

Rana

Sharma

Rathour

et al. 2023

Sci Rep

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Powdery mildew is one of the serious diseases of garden pea which causes a large number of yield losses. Genetic resistance is quite effective, being cost-effective and environment friendly than fungicide applications. In the present studies an initial attempt has been made to identify resistant genotypes against powdery mildew disease developed from hybridization followed by validation of the disease. The experimental material comprised of 48 genotypes that includes 44 advanced breeding lines was evaluated for powdery mildew incidence in Randomized Complete Block Design with three replications at two locations under field conditions [Palampur (winter 2017–18 and 2018–19) and Kukumseri (summer 2018)] and in vitro at Palampur [detached leaf method and polyhouse conditions]. Ten lines viz., SP7, SN-1, SN-6-1, SN-7-1, SN-2, SN-5-2, SN-6-2, SN-10, SN-21 and SP-281 showed resistant reaction along with check Palam Sumool while 27 lines were identified as moderately resistant in comparison to susceptible check Azad P-1. Besides, six lines namely, SP-2, SP-5, SP-10, SP-24, SA-4 and SP-12-1 gave moderately susceptible reaction along with checks Pb-89 and Palam Priya. Only, SP-19 was categorized as susceptible. The high yielding lines SP-3, SP-6 and SP-22 showed moderately resistant reaction in both natural and artificial conditions. Validation of resistance using molecular markers revealed that neither the parental genotypes nor the progenies possess the er1 gene of JI1559. The er2 linked marker ScOPX-171700 was polymorphic between Palam Sumool and Palam Priya but the marker didn’t show polymorphism between er2 harboring line (JI2480). These results suggested that the lines showing resistance under field conditions may have some other genes or alleles for resistance and further confirmation is needed by developing mapping populations with specific gene or gene combinations.

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Inheritance of resistance of two pea lines to powdery mildew

Cited by 5 publications

References 38 publications

Morphological characterization and hierarchical classification of 40 bush pea genotypes (Pisum sativum L.)

Morphological characterization and hierarchical classification of 40 bush pea genotypes (Pisum sativum L.)

Gene-Based Resistance to Erysiphe Species Causing Powdery Mildew Disease in Peas (Pisum sativum L.)

In vivo and in vitro validation of powdery mildew resistance in garden pea genotypes

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