Potato Production from True Seed in Tropical Climates

Malagamba, Patricio

doi:10.21273/hortsci.23.3.495

Cited by 28 publications

(7 citation statements)

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“…Cultivation systems based on true potato seeds (TPS) were introduced as an alternative for seed and ware tuber production (Almekinders et al, 2009;Malagamba, 1988) as they offered many advantages over the then existing conventional…”

Section: Novel Cultivation Systemsmentioning

confidence: 99%

“…Cultivation systems based on true potato seeds (TPS) were introduced as an alternative for seed and ware tuber production (Almekinders et al., 2009; Malagamba, 1988) as they offered many advantages over the then existing conventional and rapid seed tuber multiplication systems. Past experiences with open‐pollinated (OP) TPS already set precedence for the choice of cropping system as detailed research was conducted to explore different aspects of the TPS technology, including breeding, seed management, sowing, and agronomy (Almekinders et al., 1996, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Agronomic consequences of growing field‐transplanted hybrid potato seedlings

Kacheyo

Vries²,

Dijk

et al. 2023

Crop Science

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The introduction of hybrid breeding in potato (Solanum tuberosum L.) requires novel and efficient cropping systems for potato production based on true potato seed (TPS). Such systems address the limitations of conventional seed tuber–based systems, including low multiplication rates, high degeneration rates, and high costs of transport and storage. Of the possible cultivation pathways of TPS, we introduce and discuss the potential of field transplanting nursery‐raised potato seedlings as an alternative system for seed and ware production. This review discusses the current knowledge available on field transplanting of potato seedlings, the key factors that influence the success or failure of the system, and some of the prospective factors that will influence the wide introduction and utilization of field transplanting of potato seedlings in diverse farming systems. A field transplanting system will require the successful production of seedlings in the nursery, a successful establishment of transplanted seedlings in the field, and successful crop management to attain a productive seed or ware crop. The contribution of various factors in the various phases of the system to the success of the transplanted crop is also discussed. The introduction and utilization of the field transplanting system will be accelerated when hybrid breeding focuses on the introgression of traits of interest into high yielding cultivars and when agronomic studies focus on defining factors influencing productivity in distinct phases of the system.

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Section: Novel Cultivation Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Agronomic consequences of growing field‐transplanted hybrid potato seedlings

Kacheyo

Vries²,

Dijk

et al. 2023

Crop Science

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“…As F1-hybrid potato breeding continues to progress, assessing pollen viability becomes an essential trait in germplasm screening (Li et al 2022). In regions characterized by tropical climates with high temperatures, identify genotypes that exhibit robust blooming and maintain appropriate pollen viability under supraoptimal temperatures can be advantageous for cultivating True Potato Seeds (TPS) propagated cultivars (Malagamba 1988;Buckseth et al 2022). In the context of global climate change, it is crucial to explore the phenotypic plasticity of crops in response to rising temperatures to anticipate potential heat-related effects (Bloomfield et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Diploid Wild Potatoes Pollen Traits under Heat Stress

Nicolao,

Bashir,

Castro

et al. 2024

Preprint

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Screening of pollen traits in diploid wild potatoes (Solanum sect. Petota, Solanaceae) is desirable to develop heat-tolerant potato (S. tuberosum) cultivars. To accomplish this goal requires exploring potato genetic resources that are conserved in genebanks. The goal of this study was to assess pollen viability and 2n pollen production of the diploid potato wild relatives under heat stress condition. We assessed pollen viability and size of nine potato accessions conserved at the Embrapa Potato Gene Bank, including eight wild potatoes S. chacoense (BRA 00167447-2, BRA 00167017-3, BRA 00167023-1, BRA 00167028-0), S. commersonii (BRA00167007-4, BRA00167420-9, BRA00183760-8), and S. malmeanum (BRA 00183755-8), along with a control accession from the cultivated species S. tuberosum (BRA 00167251-8). The plant accessions were cultivated in different growth chambers, subjected to both control temperature (ranging from 14 to 27°C) and supraoptimal temperature conditions (ranging from 24 to 34°C). At heat stress, the accessions BRA 00167251-8 did not bloom, and BRA 00167023-1 did not produce pollen. The remaining accessions did not exhibit a significant reduction in pollen viability as the temperature increased. Pollen viability at the control temperature had the lowest value in BRA-00167420-9 (S. commersonii) with 68.5% and the highest in BRA 00183755-8 (S. malmeanum) with 100%. At the supraoptimal temperature the lowest value was in BRA 00167420-9 (S. commersonii) with 54.5% and the highest in BRA 00167017-3 (S. chacoense) with 94%. The average of pollen diameter was 20 μm in all wild potato genotypes, and the increase of temperature did not lead to 2n pollen production. Estimated Genotypic Coefficient of Variation (GCV) was lower than Phenotypic Coefficient of Variation (PCV) for pollen viability. The observed heritability values ranged from 58.82% in BRA00167007-4 to 91.32% in BRA 00183755-8. Our results highlight the genetic variability available in wild potato germplasm concerning pollen viability under heat stress. Furthermore, these first insights offer valuable guidance for ongoing and future endeavors in diploid potato breeding.

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“…As F1-hybrid potato breeding continues to progress, the assessment of pollen viability becomes an essential trait in germplasm screening [1]. In regions with tropical climates characterized by high temperatures, the identification of genotypes with robust blooming and appropriate pollen viability under supraoptimal temperatures can be advantageous for the cultivation of True Potato Seeds (TPS) propagated cultivars [2]. In the context of global climate change, exploring the phenotypic plasticity of crops in response to rising temperatures is crucial for anticipating potential heat-related effects [3].…”

Section: Introductionmentioning

confidence: 99%

Screening of Diploid Wild Potatoes Pollen Traits under Heat Stress

Nicolao,

Bashir,

Castro

et al. 2023

Preprint

View full text Add to dashboard Cite

Screening of pollen traits in diploid wild potatoes (Solanum sect. Petota, Solanaceae) is desirable to develop heat-tolerant potato (S. tuberosum) cultivars. To accomplish this goal requires exploring potato genetic resources that are conserved in genebanks. The goal of this study was to assess pollen viability and 2n pollen production of the diploid potato wild relatives under heat stress condition. We assessed pollen viability and size of nine potato accessions conserved at the Embrapa Potato Gene Bank, including S. chacoense (BRA 00167447-2, BRA 00167017-3, BRA 00167023-1, BRA 00167028-0), S. commersonii (BRA00167007-4, BRA00167420-9, BRA00183760-8), and S. malmeanum (BRA 00183755-8), along with a control accession from the cultivated species S. tuberosum (BRA 00167251-8). The plant accessions were cultivated in different growth chambers, simulating both control temperature (ranging from 14 to 27°C) and supraoptimal temperature conditions (ranging from 24 to 34°C). At heat stress, the accessions BRA 00167251-8 did not bloom, and BRA 00167023-1 did not produce pollen. The remaining accessions did not exhibit a significant reduction in pollen viability as the temperature increased. Pollen viability at the control temperature had the lowest value in BRA-00167420-9 (S. commersonii) with 68.5% and the highest in BRA 00183755-8 (S. malmeanum) with 100%. At the supraoptimal temperature the lowest value was in BRA 00167420-9 (S. commersonii) with 54.5% and the highest in BRA 00183755-8 (S. malmeanum). The average of pollen size was 20 μm in all wild potato genotypes, and the increase of temperature did not lead to 2n pollen production. Estimated Genotypic Coefficient of Variation (GCV) was lower than Phenotypic Coefficient of Variation (PCV) for pollen viability. The observed heritability values ranged from 58.82% in BRA00167007-4 to 91.32% in BRA 00183755-8. Our results highlight the genetic variability available in wild potato germplasm concerning pollen viability under heat stress. Furthermore, these first insights offer valuable guidance for ongoing and future endeavors in diploid potato breeding.

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Potato Production from True Seed in Tropical Climates

Cited by 28 publications

References 0 publications

Agronomic consequences of growing field‐transplanted hybrid potato seedlings

Agronomic consequences of growing field‐transplanted hybrid potato seedlings

Evaluation of the Diploid Wild Potatoes Pollen Traits under Heat Stress

Screening of Diploid Wild Potatoes Pollen Traits under Heat Stress

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