Yield, Yield‐related Traits and Response of Potato Clones to Late Blight Disease, in North‐Western Highlands of Ethiopia

Hirut, Betaw; Shimelis, Hussein; Melis, Rob; Mengistu, Fentahun; Jong, Walter De

doi:10.1111/jph.12514

Cited by 9 publications

(18 citation statements)

References 30 publications

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“…The potato varieties used in this experiment were Belete, Gudene, Guassa and susceptible check (Abalo). These varieties do have different levels of late blight resistance (Belete resistant, Gudene moderately resistant and Guassa moderately susceptible (Hirut et al, 2017). The first two varieties were released from Holeta Agricultural Research Center (HARC) in 2009, and 2006, respectively, whereas Guassa have released from AARC during 2002(MoARD, 2010.…”

Section: Experimental Materials Design and Treatmentsmentioning

confidence: 99%

The Fungicide and Variety Integration Effect on Late Blight (Phytophthora infestans) Disease of Potato (Solanum tuberosum L.) in Western Amhara Region, Ethiopia

Asaye

Abera

Tesfaye

2020

International Journal of Sustainable Agricultural Research

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Potato is suffered by many abiotic and biotic factors. Among biotic factors late blight disease (LBD) is the most important. The study was conducted during 2017 at Adet and Debre-Tabor to determine and evaluate the combination effect of varieties and fungicides, to reduce LBD intensities and increase yield. Four potato varieties and three fungicides with untreated check were used in factorial randomized complete block design with three replications. Lowest disease severity 11.11% was obtained from Belete and Gudene at Adet and Belete at Debre-Tabor. Similarly, the lowest AUDPC (9.33 and 89.83 %-days) were expressed from Gudene + Saboxyl 72% at Adet and Debre-Tabor, respectively, whereas, the maximum PSI and AUDPC were obtained from untreated plots. In average up to 359.81% yield increases were recorded from Abalo + Saboxyl 72% WP. The highest marginal rates of return (2,886.50 % and 3,786.35%) were obtained from Saboxyl 72% treated plots of Abalo & Guassa at Debre-Tabor and Adet, respectively. Therefore, an application of Saboxyl 72% with different varieties was effective at both locations to reduce the yield loss of potato and could be recommended to manage LBD. The combination of Saboxyl 72% with Gudene, Belete and Guassa were highly hinder LBD development at both locations. Even though, its yielding capacity was relatively lower Gudene could be recommended for production without fungicide. Variety Belete and Guassa could be recommended for production in combination with Saboxyl 72%, since they have best performance with relatively lower disease reaction at Adet and Debre-Tabor, respectively. Contribution/Originality:This study contributes in the existing literature to fill the gap of the current state of knowledge of late blight disease management of potato. This study is one of very few studies which have investigated potato late blight disease management in Western Amhara Region Ethiopia. INTRODUCTIONPotato (Solanum tuberosum L.) ranks 3 rd after rice and wheat in terms of human consumption (Devaux et al., 2014; FAOSTAT, 2015) and it is the primary non-grain food commodity in the world (Waga et al., 2016). Among root and tuber crops, potato ranks first in volume of production and consumption, followed by cassava, sweet potato and yam (Egata et al., 2016). It is a high potential contributor to national food security (Gildemacher et al., 2009;Bitew and Abera, 2018). In Ethiopia, potatoes are a source of both food and cash income in the densely populated highlands, where 90% of the population resides (Gildemacher et al., 2009;Abebe et al., 2013). Its high yielding capacity, early maturing, and excellent food value give the potato great potential for improving food security,

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Section: Experimental Materials Design and Treatmentsmentioning

confidence: 99%

The Fungicide and Variety Integration Effect on Late Blight (Phytophthora infestans) Disease of Potato (Solanum tuberosum L.) in Western Amhara Region, Ethiopia

Asaye

Abera

Tesfaye

2020

International Journal of Sustainable Agricultural Research

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“…Among these, CIP395112.32, CIP396038.107, and Gorebella were the best yielders both under drought and well-watered conditions. The genotype CIP396029.250 has the additional merit of being late blight resistant [ 36 ] and CIP396038.107, of being a good combiner for late blight resistance [ 56 ]. Consequently, clone CIP396029.250 may be suitable for release in drought prone areas.…”

Section: Discussionmentioning

confidence: 99%

“…The disease is widespread in most potato growing areas of the country. Indeed, it has been demonstrated that the disease can causes up to 88% reduction in tuber yield [ 36 ]. Selecting individuals and families for drought adaptation in a population improved for late blight resistance could be an important strategy in breeding for yield stability under unpredictable rainfall conditions that cause multiple stresses.…”

Section: Introductionmentioning

confidence: 99%

Combining ability of highland tropic adapted potato for tuber yield and yield components under drought

et al. 2017

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Recurrent drought and late blight disease are the major factors limiting potato productivity in the northwest Ethiopian highlands. Incorporating drought tolerance and late blight resistance in the same genotypes will enable the development of cultivars with high and stable yield potential under erratic rainfall conditions. The objectives of this study were to assess combining ability effects and gene action for tuber yield and traits related to drought tolerance in the International Potato Centre’s (CIP’s) advanced clones from the late blight resistant breeding population B group ‘B3C2’ and to identify promising parents and families for cultivar development. Sixteen advanced clones from the late blight resistant breeding population were crossed in two sets using the North Carolina Design II. The resulting 32 families were evaluated together with five checks and 12 parental clones in a 7 x 7 lattice design with two water regimes and two replications. The experiment was carried out at Adet, in northwest Ethiopia under well-watered and water stressed conditions with terminal drought imposed from the tuber bulking stage. The results showed highly significant differences between families, checks, and parents for growth, physiological, and tuber yield related traits. Traits including marketable tuber yield, marketable tuber number, average tuber weight and groundcover were positively correlated with total tuber yield under both drought stressed and well-watered conditions. Plant height was correlated with yield only under drought stressed condition. GCA was more important than SCA for total tuber yield, marketable tuber yield, average tuber weight, plant height, groundcover, and chlorophyll content under stress. This study identified the parents with best GCA and the combinations with best SCA effects, for both tuber yield and drought tolerance related traits. The new population is shown to be a valuable genetic resource for variety selection and improvement of potato’s adaptation to the drought prone areas in northwest Ethiopia and similar environments.

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“…The devastation caused as much as 5.2 billion Euros annually and globally in the potato tuber yield loss due to the late blight disease of potatoes is caused by a heterothallic oomycete Phytophthora infestans. The colossal damage in the tuber yield, leaves and stems with outright failure of the crops is observed in infected plants (Bradeen et al, 2009;Haverkort et al, 2009;Hirut et al, 2017). The use of fungicides has been widely popular in the developed world in combating the late blight disease of potatoes.…”

Section: Phytophthora and Verticillium Resistant Potatoesmentioning

confidence: 99%

“…Introduction of resistant (R) genes could bring about ameliorated plant performance and the application of fungicides would not be inevitable. Similarly, the traditional early planting, exterminating inoculum source and the adoption of cultivars which are naturally resistant are different approaches been adopted to combat potato late blight disease (Hirut et al, 2017;Halterman et al, 2008).…”

Section: Phytophthora and Verticillium Resistant Potatoesmentioning

confidence: 99%

GENETIC APPROACHES FOR ENGINEERING BIOTIC STRESS RESISTANCE IN POTATO (Solanum tuberosum L.)

Bakhsh¹,

Dangol²,

Naeem³

et al. 2020

THE JAPS

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Potato is one of the most important food crops in terms of annual production and food security worldwide. The crop is affected by several types of biotic stresses, e.g. insects, viruses, fungus, nematodes and weeds, which are the prominent limiting factors for its production. The conventional breeding methods in potato have been associated with limitations; none of the present day commercial cultivar has built-in resistance against biotic stresses. There is strong need for the development of new resistant potato varieties to cope against biotic stresses using non-classical approaches in combination with classical methods. The scientific literature suggests the contribution of modern biotechnological techniques for the development of transgenic potato lines resistant against insects and diseases. The present comprehensive review describes different genetic engineering approaches for the development of transgenic potatoes resistant to insects, weeds, nematodes, fungus and viruses by fellow researchers worldwide. It also gives an insight into modern technologies, e.g. RNAi and CRISPR-Cas9, which have emerged recently and can be implemented in the development of biotic stress resistant potato cultivars.

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Yield, Yield‐related Traits and Response of Potato Clones to Late Blight Disease, in North‐Western Highlands of Ethiopia

Cited by 9 publications

References 30 publications

The Fungicide and Variety Integration Effect on Late Blight (Phytophthora infestans) Disease of Potato (Solanum tuberosum L.) in Western Amhara Region, Ethiopia

The Fungicide and Variety Integration Effect on Late Blight (Phytophthora infestans) Disease of Potato (Solanum tuberosum L.) in Western Amhara Region, Ethiopia

Combining ability of highland tropic adapted potato for tuber yield and yield components under drought

GENETIC APPROACHES FOR ENGINEERING BIOTIC STRESS RESISTANCE IN POTATO (Solanum tuberosum L.)

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