Search for sources of early blight (Alternaria solani) field resistance not associated with vegetative late maturity in tetraploid potato germplasm

Boiteux, L. S.; Reifschneider, F. J. B.; Fonseca, M. E. N.; Buso, J. A.

doi:10.1007/bf01677862

Cited by 29 publications

(23 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The AUDPC is very convenient summary of plant disease epidemics that incorporates initial intensity, the rate parameter and duration of epidemic, which determine final disease intensity (Andre et al, 2014). Hence, the effect of disease resistance on crop can be evaluated by using area under disease progress curve (Boiteux et al, 1995). This is in agreement with the finding of Jaime et al (2014) who reported that high susceptible cultivar Shepody had the highest AUDPC value among 10 potato cultivars in Argentina.…”

Section: Mean Performance Of Genotypessupporting

confidence: 86%

Evaluation of potato (Solanum tuberosum L.) genotypes for resistance to late blight at Sinana Southeastern Ethiopia

Asefa

Mohammed

Abebe

2016

Int. J. Agril. Res. Innov. & Tech.

View full text Add to dashboard Cite

Late blight caused by Phytophthora infestans (Mont.) de Bary, is one of the most significant constraints to potato production in Bale high lands and other regions of Ethiopia. Hence, this requires to develop high yielding and late blight resistant varieties. Therefore, this study was conducted to determine host resistance of potato against Phytophthora infestans in order to develop late blight resistant/tolerant genotypes. The experiment was laid out in randomized complete block design with three replications at Sinana Agricultural Research Center during 2014 main cropping season. The genotypes showed highly significant (P<0.01) differences for all the characters studied. Genotypes exhibited wide ranges of mean values for all characters. The highest total tuber yield (46.1 t ha -1 ) was obtained from the advanced clone, CIP-392640.524 followed by Belete (41 t ha -1 ). Late blight appeared early on farmer's cultivar Kellacho (48 days after planting) and late on advanced clones CIP-399062.102(74 days after planting). Percent severity index (PSI) and area under disease progress curve (AUDPC) ranged from 33.91 to 91.67% and 105 to 2370, respectively. Eleven newly introduced clones and the released variety "Belete" recorded PSI 33 to 39.7% and AUDPC 105 to 264.1. Hence, these genotypes can be categorized as moderately resistant. The study revealed the presence of considerable variability in tested genotypes for economically important traits and the higher chance of selecting genotypes with high yield and moderately resistant to late blight. However, it appears that further evaluation of genotypes across seasons and locations to identify genotypes that could be released as varieties seem to be quite pertinent.

show abstract

Section: Mean Performance Of Genotypessupporting

confidence: 86%

Evaluation of potato (Solanum tuberosum L.) genotypes for resistance to late blight at Sinana Southeastern Ethiopia

Asefa

Mohammed

Abebe

2016

Int. J. Agril. Res. Innov. & Tech.

View full text Add to dashboard Cite

show abstract

“…Elodie, considered the susceptible standard, exhibited a mid-early maturity. Earlier maturing potato genotypes with field resistance to EB have been identified (Herriott et al, 1990;Reifschneider& Brune 1992;Boiteux et al, 1995;Simon et al, 2009). The identification of such cultivars is important because breeding programs aim to obtain earlier maturity cultivars with higher levels of resistance to EB (Brune & Reifschneider, 1989;Brune et al, 1990;Reifschneider & Brune, 1992;Brune et al, 1994).…”

Section: Discussionmentioning

confidence: 99%

Field resistance of potato cultivars to foliar early blight and its relationship with foliage maturity and tuber skin types

Duarte¹,

Zambolim²,

Rodrigues³

et al. 2014

Trop. plant pathol.

View full text Add to dashboard Cite

Three field experiments were carried out to assess the level of resistance of several cultivars to early blight (EB) and to examine the association between host resistance and either foliage maturity or tuber skin types. A total of 26 cultivars were used in Exps. 1 and 2, and 24 in Exp. 3. Plants were inoculated with isolates of Alternaria grandis at 31 days after planting. EB severity was quantified in each plot every seven days. The approach to determine the resistance levels of potato cultivars was based on multivariate analysis techniques. The tested cultivars responded as either resistant, moderately resistant, moderately susceptible or susceptible to EB. Most of the cultivars were classified as susceptible or moderately susceptible to EB. Resistant cultivars were mid-season, mid-late or late maturity. None of the susceptible cultivars were later maturity (mid-late or late maturity). In most cases, susceptible cultivars were earlier maturity (early or mid-early maturity). Most resistant cultivars had rough, mid-rough or smooth skin. None of the susceptible cultivars had rough skin. In most cases, susceptible or moderately susceptible cultivars had smooth skin. Obtaining potato cultivars that are resistant to this destructive disease will help reduce production costs and the need for costly fungicides.

show abstract

“…Inheritance studies by these authors indicated that genes with additive effects were the most important in determining resistance at the diploid level. Breeding programmes have been developed at the tetraploid level by Brandolini (1992), Boiteux et al (1995) and Love et al (1997) to enhance the resistance. Recently, a gene encoding an endochitinase from a biocontrol fungus (Trichoderma harzianum) was transferred to potato by Lorito et al (1998).…”

Section: Resistance To Biotic Stressesmentioning

confidence: 99%

Breeding and physiological aspects of potato cultivation in the Mediterranean region

Frusciante¹,

Barone²,

Carputo³

et al. 1999

Potato Res

View full text Add to dashboard Cite

SummaryIn the Mediterranean area the potato is a very important crop and can be cultivated throughout the year. However, tuber yields are generally much lower than those in Northern European countries. This is because the environmental and agro-economic conditions are different from those of Northern countries where most cultivars were developed. We feel that the objective for the "new Mediterranean potato" must be the availability of potato cultivars for each environment and for each planting season. Breeding programmes should focus on improving potato production within a specific agro-ecologicai Mediterranean area rather than improving crop production across areas. This paper reports aspects of potato breeding and physiology related to resistance to stress conditions in the Mediterranean area, with particular emphasis given to resistance to abiotic (heat, drought and frost) as well as biotic stresses. We also discuss the potential to produce seed tubers suitable for potato cultivation in the Mediterranean area.

show abstract

Search for sources of early blight (Alternaria solani) field resistance not associated with vegetative late maturity in tetraploid potato germplasm

Cited by 29 publications

References 18 publications

Evaluation of potato (Solanum tuberosum L.) genotypes for resistance to late blight at Sinana Southeastern Ethiopia

Evaluation of potato (Solanum tuberosum L.) genotypes for resistance to late blight at Sinana Southeastern Ethiopia

Field resistance of potato cultivars to foliar early blight and its relationship with foliage maturity and tuber skin types

Breeding and physiological aspects of potato cultivation in the Mediterranean region

Contact Info

Product

Resources

About