Merideth Bonierbale

Consultative Group on International Agricultural Research | CGIAR · International Potato Center (CIP)

Bangladesh is in a subtropical monsoon region and extends from 20°34’N to 26°38’N latitude, its agriculture is comprised of several diversified rice-based cropping systems. Potato is an important winter crop across the country. To help increase the sustainability of potato production in Bangladesh, a set of medium-term late blight-resistant potato...

Kufri Thar-2 is a drought tolerant table potato variety suitable for cultivation in drought prone areas in Uttar Pradesh, Rajasthan, Haryana and Chhattisgarh. It is an exotic clone CIP397006.18 (CP4175) descendant of cross CIP92.119 x CIP88.052 developed at International Potato Center, Lima, Peru. Its plants are medium and vigorous with resistance...

Kufri Lima is a heat tolerant table potato variety suitable for early planting in North Indian plains. It is an exotic clone CIP397065.28 (CP4054) descendant of cross CIP391180.6 x CIP392820.1 developed at International Potato Center, Lima, Peru. Its plants are tall and vigorous with tolerance to mite and hopper burn. The passport data reveals that...

In cultivated tetraploid potato (Solanum tuberosum), reduction to diploidy (dihaploidy) allows for hybridization to diploids and introgression breeding and may facilitate the production of inbreds. Pollination with haploid inducers yields maternal dihaploids, as well as triploid and tetraploid hybrids. Dihaploids may result from parthenogenesis, en...

Crop species and varietal diversity on farm have the potential to trigger multiple regulating and provisioning ecosystem services. The latter is commonly assessed through targeted studies covering a select number of geographies and crop species, precluding comparisons across crops and at scale. This study draws on a large dataset on the varietal re...

In cultivated tetraploid potato, reduction to diploidy (dihaploidy) allows hybridization to diploid germplasm, introgression breeding, and may facilitate the production of inbreds. Pollination with haploid inducers yields maternal dihaploids, as well as triploid and tetraploid hybrids. It is not known if dihaploids result from parthenogenesis, enta...

Potato is a drought susceptible, often rain-fed crop suffering strongly from even short periods of soil water deficit. With global environmental conditions changing, potato clones resistant to variable water supply are needed and identifying them is a major task. Many indices assessing potato tolerance to water deficit have been proposed, albeit no...

A main breeding target of the International Potato Center (CIP) has been the biofortification of potato (Solanum tuberosum L.) with the essential micronutrients iron and zinc. This study assessed the broad‐sense heritability (H²) and genetic gains (ΔGs) achieved for iron and zinc concentrations in potato tubers and their relationships with yield co...

The identification of environmentally stable and globally predictable resistance to potato late blight is challenged by the crop’s clonal and polyploid nature and the pathogen’s rapid evolution. Genome-wide analysis (GWA) of multi-environment trials can add precision to breeding for complex traits. A diversity panel of tetraploid potato germplasm b...

Elucidating and improving the nutritional value of staple crops is an important focus in breeding programs. Hence, wild and cultivated potatoes have been metabolite profiled to assess metabolic plasticity present in potato tubers and changes that occur in these after cooking. The present data highlighted metabolic similarities of certain wild speci...

The breeding of crop plants is a highly effective means of increasing agricultural productivity in a sustainable and environmentally safe way. Prebreeding and population improvement not only capture essential genetic resources and move desired traits along variety development pipelines but also help assure the creation of broad and dynamic gene poo...

The challenges of breeding autotetraploid potato (Solanum tuberosum) have motivated the development of alternative breeding strategies. A common approach is to obtain uniparental dihaploids from a tetraploid of interest through pollination with S. tuberosum Andigenum Group (formerly S. phureja) cultivars. The mechanism underlying haploid formation...

This guide for trainers provides an up-to-date overview of steps, processes and skills involved in participatory varietal selection (PVS). The PVS methodology using the Mother & Baby Trial design was originally developed by researchers based on participatory action research within a soil fertility network in southern Africa. It has been used—and mo...

Potato crop is expanding to areas with temperatures higher than those required. Climate change is increasing temperatures in traditional areas of potato production, thereby affecting tuber yield. The International Potato Center has developed a population adapted to these new conditions, being more tolerant to high temperatures, resistant to late bl...

The challenges of breeding autotetraploid potato ( Solanum tuberosum ) have motivated the development of alternative breeding strategies. A common approach is to obtain uniparental dihaploids from a tetraploid of interest through pollination with S. tuberosum Andigenum Group (formerly S. phureja ) cultivars. The mechanism underlying haploid formati...

Most commercially cultivated potato varieties are tetraploid (2n=4x=48), primarily derived from the Solanum tuberosum Group tuberosum genome, combined with variable levels of wild and landrace introgressions. Tetraploid potato has high levels of heterozygosity, as well as complex genetics arising from being an outcrossing autopolyploidy. To that en...

Potato is the backbone of agriculture and diets in high-altitude food systems of Peru, where farmers grow diverse varietal portfolios. Here we report on the role of diverse landraces and modern potato varieties in the Andean diet. The dry matter, energy, protein, iron and zinc content of 12 floury and 9 bitter landraces was determined. The contribu...

Iron (Fe) is a crucial nutrient for plant growth (e.g. chlorophyll production), and though it is one of the most abundant elements in soil, very low bioavailability can limit plant growth. Studies indicate that many soil bacteria and fungi (e.g. mycorrhizal) play a role in Fe nutrient cycling and plant production, but the evidence for fungal suppor...

Potato (Solanum tuberosum L.) is one of the widely produced, consumed and traded horticultural crops in Bhutan. Hence, potato cultivation has picked up fast and has transformed the Bhutanese agriculture from subsistence to an emerging market-oriented economy. However, productivity of potato in Bhutan has stagnated over last decade due to lack of di...

Micronutrient deficiencies in diets, including iron (Fe) and zinc (Zn), are an important public health problem across population in Ethiopia. Potato is a modest source of dietary nutrients. The purpose of this study was to assess the mineral (Fe & Zn) composition of potato germplasm in Ethiopia and grower’s willingness to try new potato types. The...

Breeding efforts to develop high iron and zinc potatoes require a fast and inexpensive technique to evaluate mineral concentrations in large numbers of samples. In this study, we evaluated the feasibility of applying X-ray fluorescence spectrometry to estimate iron and zinc in freeze-dried and milled potato tuber samples. The calibration, and the e...

Following the often short-lived protection that major nucleotide binding, leucine-rich-repeat resistance genes offer against the potato pathogen Phytophthora infestans, field resistance was thought to provide a more durable alternative to prevent late blight disease. We previously identified the QTL dPI09c on potato chromosome 9 as a more durable f...

High temperatures affect potato production in the tropics, putting tuber yield and quality at risk and leading to increased glycoalkaloid concentration the cause of the bitter taste in potatoes and a cause for concern for human health. The International Potato Center (CIP), has developed new heat tolerant clones which are heat tolerant and also res...

Segregating progenies from 19 crosses of potato (Solanum tuberosumL.) developed at the International Potato Center (CIP), Peru were tested during 2008-2013 for adaptation and yield attributes in the sub-tropical plains of India i.e. Modipuram, Uttar Pradesh. The progenitors of the crosses showed early foliage maturity, tolerance to biotic stresse...

Literature describes the belowground and aboveground development of potato to be closely and quasi-linearly related. For example, bud formation is synchronous with tuber initiation and flowering with tuber filling. Thus, many agronomic and breeding studies in potato use non-destructive aboveground phenology to assess belowground development. No inf...

www.cipotato.org Citation Mihovilovich, E.; Lopes, C.; Gutarra, L.; Linqvist-Kreuze, H.; Aley, P. ; Priou, S. ; Bonierbale M. 2017. Protocol for assessing bacterial wilt resistance in greenhouse and field conditions. International Cooperators' Guide. Lima (Peru). International Potato Center. ISBN 978-92-9060-214-9. 35 p. Layout

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 st...

Chlorophyll content measured in 60 individuals of 32 families under water stressed condition. (TIF)

Mean root dry mass of 25 potato clones evaluated at Injibara during 2014/2015 dry season under terminal water stress. (DOCX)

Analysis of variance and mean values of traits in 32 families under drought conditions. (DOCX)

Chlorophyll content measured in 30 individual plants of 32 families and two replications under water stressed condition. (TIF)

Analysis of variance of 25 potato clones for root tuber mass planted at Injibara, Ethiopia during 2013/2014 dry season under terminal water stress condition. (DOCX)

Association among phenological and tuber yield. (DOCX)

Multiple regression of yield under stress on yield under non-stress and the number of days from planting to 50% of plants exhibiting flower bud formation under well-watered treatments. (DOCX)

Genetic distance estimates of 18 potato genotypes revealed by 23 SSR markers. (DOCX)

Raw data. (XLSX)

The CGIAR Research Program (CRP) on Roots, Tubers and Bananas (RTB) includes vegetatively propagated staple crops linked by common breeding, seed, and postharvest issues, and by the frequency with which women are involved in their production and use. RTB crops are the backbone of food security across the humid tropics in sub-Saharan Africa (SSA) an...

p>A study was conducted to evaluate the yield of nutrient-rich potato clones in high-hill districts: Dolakha and Jumla of Nepal during the years 2013 and 2014, respectively. Fourteen potato clones were tested as on-station and on-farm experiments at both districts, and those fourteen clones were compared to ‘Lady Rosita’ and ‘Jumli Local’ respectiv...

El objetivo de esta guía es orientar paso a paso la facilitación y documentación de la dinámica SPV (Seleccion participativa de variedades) usando el diseño M&B para seleccionar, y eventualmente liberar, variedades de papa preferidas por los usuarios finales, que se adapten a las diferentes necesidades de los agricultores, a los diversos agro-ecosi...

Potato (Solanum tuberosum L.) has recently become a strategic food security crop in the drought-prone highlands of Ethiopia as its short growth period makes it well suited for crop rotation with other major crops. However, under Ethiopian fluctuating rainfall condition, drought coupled with late blight disease leads the potato crop to further decli...

The whole idea of crop improvement, be it through conventional breeding methods or through genomics-assisted breeding methods, is to increase genetic gain over time. Genomics-assisted breeding is hoped to help reduce the length of the conventional breeding cycle by allowing selection, at least in some generations, during early developmental stages...

Several hypotheses have been postulated about the wild species that probably gave rise to cultivated potato species. Some of them have been evaluated, using molecular approaches and have received some support. Unfortunately, these studies have been done with a limited number of species and/or representatives of species, which limits the acceptance...

Sweetpotato is a food security crop especially for the poorest of the world, a polyploid crop (2n=6x=90) with a highly heterozygous genome with an estimated size of 4.4Gb. Consequently, genome analysis is difficult and genomic tools for sweetpotato improvement are scarce. Toward closing this gap, we followed the two-way pseudo-testcross approach to...

A set of International Potato Center (CIP)-bred potato clones was evaluated for their salt tolerance and productivity in replicated field trials in three coastal districts of Bangladesh, namely, Chittagong, Patuakhali and Satkhira. In each year of experimentation from 2011 to 2015, salinity levels increased progressively during the season and varie...

Water deficiency has become a major issue for modern agriculture as its effects on crop yields and tuber quality have become more pronounced. Potato genotypes more tolerant to water shortages have been identified through assessment of yield and dry matter. In the present study, a combination of metabolite profiling and physiological/agronomical mea...

A collaborative study was undertaken on eighteen micro-nutrient rich potato genotypes to evaluate their yield performance at Agriculture Research Station (ARS, Horticulture Farm) Rajikot as an on-station and at farmers’ field of Patmara and Talium as on-farm in Jumla District of Nepal during 2013-2014. Mean marketable tuber weight/plot over on-stat...

Abstract: This experiment was conducted to investigate the performance of advanced potato clones at high hills of Nepal during 2013-2014. Eight advanced potato clones were evaluated with locally adapted variety ‘Lady Rosita’ at Nigaley Farm of Sindhupalchowk and farmers’ field of Dolakha, as an on-station and on-farm experiments, respectively. The...

Premise of the study: Interspecific reproductive barriers (IRBs) often prevent hybridization between closely related species in sympatry. In the tomato clade (Solanum section Lycopersicon), interspecific interactions between natural sympatric populations have not been evaluated previously. In this study, we assessed IRBs between members of the tom...

Nearly 90 % potato (1.8 million ha) in India is cultivated in irrigated lands during winter under short day conditions. The International Potato Center (CIP) has been working in partnership with NARS to select candidate varieties with resistance to viruses (PVY and PLRV), heat tolerance, short day adaptation and good keeping quality in country stor...

Introduction: Many opportunities to support complex processes are afforded by the integration of plant breeding and information technology (IT). Plant breeding is a process of developing improved varieties of plants with desirable traits from existing ones. The process of crossing two or more plants together to obtain offspring with new desirable c...

The new cultivar UNICA is advantageous over existing cultivars for warm areas, was developed by the Germplasm Enhancement and Crop Improvement Division of the International Potato Center (CIP), with the support of national partner, the National University San Luis Gonzaga, Ica, Peru. Its recent registration in the National Register of Commercial Cu...

Here we give an overview of current status of ontology related research at CIP. This includes building and curation of potato and sweet potato ontology with special sections on participatory varietal selection, and the building of R libraries and R based tools; a) to access and transform ontologies from/between formats; and b) to analyze and visual...

Access to Water and Nitrogen (N) are key challenges in potato crop management that could be optimized through understanding related agronomic and physiological traits. The responses to water deficit and two levels of nitrogen (0 and 200 kg N.ha-1) were assessed here for agronomic and physiological traits for potato genotypes UNICA, Achirana-INTA, a...

Six released sweet potato varieties (BARI SP 4, BARI SP 6, BARI SP 7, BARI SP 8, BARI SP 12 & BARI SP 13) with a local cultivar (as check variety) were evaluated in two saline zones like Satkhira and Kuakata of Patuakhali for their performance during 2014-15 crop seasons. All the varieties under study performed better in the salinity level of 1.02-...

Breeding potato (Solanum tuberosum L.) is becoming increasingly complicated because of the growing number of requirements for new varieties, particularly the added concern of adapting potato to climate variability, especially in regions of sub-Saharan Africa. Combining the right genes to overcome constraints of climate variability in a potato crop,...

In many parts of sub-Saharan Africa (SSA), potato plays an important role as a food security crop. Yet technological improvements to boost potato productivity have so far not been extensively utilized. Moreover, it remains unclear which potential impacts can be expected from future technological innovations in potato production in the region. To sh...

The bioaccessibility and bioavailability of iron from twelve Andean potato clones were estimated using an in vitro gastro-intestinal digestion procedure and the Caco-2 cell line as a model of human intestine, with ferritin formation as a marker of iron absorption. We first showed that 63.7 % (for the genotype "CIP_311422.016") to 79.0 % (for the ge...

Understanding tuberization traits is critical for developing potato varieties that are broadly adapted to diverse and changing environmental conditions. Since tuberization traits in potatoes are affected by photoperiod, this study aimed at identifying chromosomal regions associated with the photoperiod-related bulking ratio (BR). Here, we evaluated...

We analyzed the cytoplasmic diversity of CIP potato breeding germplasm. Cytoplasm types were assigned to 978 genotypes consisting of 265 foreign accessions used as input germplasm, 642 breeding lines developed by CIP, and 71 varieties released from CIP material. We found T (45 %), D (38 %), and W (11 %) to be the most frequent cytoplasm types in CI...

Background Tuber appearance is highly variable in the Andean cultivated potato germplasm. The diploid backcross mapping population ‘DMDD’ derived from the recently sequenced genome ‘DM’ represents a sample of the allelic variation for tuber shape and eye depth present in the Andean landraces. Here we evaluate the utility of morphological descriptor...

The BioMart Community Portal (www.biomart.org) is a community-driven effort to provide a unified interface to biomedical databases that are distributed worldwide. The portal provides access to numerous database projects supported by 30 scientific organizations. It includes over 800 different biological datasets spanning genomics, proteomics, model...

The aim of this study was to increase marker density in a previously identified late blight resistance QTL in a diploid potato population. SSR markers from the reference potato genome sequence were located by e-PCR in the QTL region in the chromosome 9 genetic map of the diploid potato population B3C1HP, and utilized to identify more candidate gene...

Note: We were made aware of a naming conflict with a prior similar tool; therefore we renamed our tool to QuiGMap. Genetic maps are an important visual tool to summarize and explore genetic data. As genetic markers sets get more dense it is more and more important that the graphical user interface of a genetic map viewer is fast. Limitations in th...

An efficient in vitro system for early generation selection of heat-tolerant potato breeding materials was tested and validated in field conditions. At the family level, family groups expected to be heat tolerant due to their genetic background were identified as heat tolerant. In the in vitro assay, LTVR × LTVR, an advanced heat-tolerant breeding...