Photoperiod response and earliness ofS. tuberosum ssp.andigena after six cycles of recurrent selection for adaptation to long days

Rasco, E. T.; Plaisted, R. L.; Ewing, Elmer E.

doi:10.1007/bf02854459

Cited by 29 publications

(9 citation statements)

References 8 publications

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“…3), the relation between induction scores and subsequent tuber initiation proved to be cultivar dependent. Also, others (Rasco et al , 1980) have found that the correlation over cultivars between induction scores and the initiation of tubers was weaker than that with harvest index or the degree of partitioning of dry matter to tubers. The changes in the expected degree of tuber induction between cultivars (Gloria being earlier than Bintje) were not reflected in an earlier increase in induction scores in Gloria.…”

Section: Discussionmentioning

confidence: 99%

Tuber induction and initiation during production and early field growth of transplants from in vitro‐derived potato plants

Lommen¹,

Struik²

2006

Annals of Applied Biology

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In transplants from in vitro-derived plantlets from very early potato (Solanum tuberosum) cultivars, a lower degree of tuber induction at the time of field planting is thought to increase tuber production. Leaf-bud cuttings were used to assess the progress to tuber induction in in vitro-derived potato plantlets during the transplant production phase and after subsequent transplanting into the field. Induction and initiation of tubers on the same plants were assessed to study the effects of the duration of transplant production and conditions during transplant production for cv. Gloria (very early) and cv. Bintje (mid-early). In vitro-produced plantlets were not induced by the time of planting but rapidly progressed to the induced state thereafter. The progress in induction with time and the change in percentage of plants showing tubers fitted typical sigmoid curves. Plantlets achieved 50% induction ca 15 days after planting into in vivo conditions, and 50% tuber initiation usually occurred 10 days later. Shorter transplant production periods reduced the degree of induction of the transplants at field planting. Transplant production for more than 2 weeks was required to allow conditions during that period to affect induction or initiation. Long-term non-inducing conditions delayed the progress to tuber induction in cv. Gloria and delayed tuber initiation in both cultivars. Cv. Gloria showed no faster progress to induction than cv. Bintje but initiated tubers earlier. The results suggest that the relation between progress to induction and tuber initiation is cultivar dependent and that leaf-bud cuttings can be used successfully in very young in vitro-derived plants for assessing the progress to tuber induction.

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Section: Discussionmentioning

confidence: 99%

Tuber induction and initiation during production and early field growth of transplants from in vitro‐derived potato plants

Lommen¹,

Struik²

2006

Annals of Applied Biology

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“…It inspired a new generation of potato breeders to practice the concept of germplasm enhancement by base broadening breeding using Neo-Tuberosum and the Andigenum landraces germplasm (Glendinning 1975c). In 1965, the potato breeding program at Cornell University took over the material from John Innes Institute and bred it with Andigenum landraces from South America (Plaisted 1972;Rasco et al 1980;Muñoz and Plaisted 1981). After several years of breeding and selection, this program provided Neo-Tuberosum material to many breeding programs worldwide including the International Potato Center (CIP, in Lima Peru).…”

Section: Introductionmentioning

confidence: 99%

The single Andigenum origin of Neo-Tuberosum potato materials is not supported by microsatellite and plastid marker analyses

et al. 2009

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Neo-Tuberosum refers to cultivated potato adapted to long-day tuberization and a syndrome of related morphological and physiological traits, developed by intercrossing and selection of short-day adapted potatoes of the Solanum tuberosum Andigenum Group, native from the Andes of western Venezuela to northern Argentina. This re-creation of the modern potato helped support the theory of an Andigenum Group origin of potato in temperate regions and the possibility to access the largely untapped diversity of the Andigenum Group germplasm by base broadening breeding. This Neo-Tuberosum derived theory, the re-creation of the modern potato from Andigenum germplasm, has been universally accepted for almost 40 years, and has had tremendous impact in planning some breeding programs and supporting phylogenetic conclusions in cultivated potato. We show, with microsatellite (simple sequence repeat, SSR) and plastid DNA marker data, that Neo-Tuberosum germplasm is closely related to Chilotanum Group landraces from lowland south-central Chile rather than to Andigenum Group germplasm. We interpret this quite unexpected result to be caused by strong rapid selection against the original Andigenum clones after unintended hybridization with Chilotanum Group germplasm. In addition, we show that Neo-Tuberosum and Andigenum Group germplasm did not serve to broaden the overall genetic diversity of advanced potato varieties, but rather that Neo-Tuberosum lines and lines not using this germplasm are statistically identical with regard to genetic diversity as assessed by SSRs. These results question the long-standing Neo-Tuberosum derived theory and have implications in breeding programs and phylogenetic reconstructions of potato.

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“…Long-day adapted genotypes, or those producing tubers under long days, were selected and named "Neo-Tuberosum" (Simmonds 1969in Glendinning 1975a. Independently in the USA, six cycles of phenotypic recurrent selection for yield were applied to a collection of Andigena, which resulted in increased photoperiodic adaptation and earliness (Rasco et al 1980;Munoz and Plaisted 1981). Our approach, however, was considerably different from the "Neo-Tuberosum" experiment because we systematically used Andigena germplasm in single hybridization events, from which long-day adapted F 1 hybrids were selected and immediately released to breeders.…”

Section: Introductionmentioning

confidence: 99%

Broadening Genetic Diversity of the Japanese Potato Gene Pool

Hosaka

Sanetomo

2020

Am. J. Potato Res.

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Newly developed potato varieties in Japan have never replaced existing old varieties, indicating genetic poverty in our gene pool. To broaden the genetic diversity, Andean primitive cultivated potatoes (Andigena) were used to create parental clones. A total of 184 Andigena accessions and 10 tetraploid Solanum tarijense-Andigena hybrid clones were crossed with a breeding clone 10H17. From 6939 F 1 hybrid clones, 287 were selected as long-day-adapted F 1 clones. From progeny evaluation using these as pollen parents crossed with Atlantic, 95 male-fertile and high-yielding F 1 clones were selected (PGEL clones). The genetic relationship was evaluated using 17,947 single nucleotide polymorphism (SNP) markers, which disclosed their distinctiveness, with larger mean Euclidean distances between PGEL clones and Japanese, foreign, or all tetraploid varieties (48.0, 49.9 or 49.4, respectively) than between Japanese and foreign varieties (47.2). Thus, these PGEL clones can be used to expand genetic diversity in Japanese potato breeding populations. Resumen Las nuevas variedades de papa desarrolladas en Japón nunca han reemplazado a las viejas variedades en existencia, indicando pobreza genética en nuestro grupo de genes. Para ampliar la diversidad genética, se usaron papas cultivadas primitivas Andinas (Andigena) para crear clones parentales. Se cruzaron un total de 184 accesiones de Andigena y 10 clones híbridos tetraploides de Solanum tarijense-Andigena, con el clon 10H17. De 6939 clones híbridos de F1, se seleccionaron 287 como clones F1 adaptados a día largo. De la evaluación de la progenie usando polen parental cruzado con Atlantic, se seleccionaron 95 clones androfértiles y de alto rendimiento de F1 (clones PGEL). Se evaluó la relación genética usando 17,947 marcadores de polimorfismo de nucleótido simple (SNP), que exhibieron sus diferencias, con promedios de distancias Euclideanas mas grandes entre los clones PGEL y las variedades japonesas, extranjeras, o todas las tetraploides (48.0, 49.9 o 49.4, respectivamente) que entre variedades japonesas y extranjeras (47.2). De aqui que estos clones PGEL pueden usarse para expandir la diversidad genética en las poblaciones del mejoramiento genético de papa japonés. Keywords Andigena. Long-day-adapted F 1 hybrid clones. PGEL clones. Single nucleotide polymorphism (SNP). Marker-assisted selection. Cytoplasmic genome diversity This paper is dedicated to Mr. Masahiko Matsuo, the former President of Calbee Inc., who endowed the Potato Germplasm Enhancement Laboratory at Obihiro University of Agriculture and Veterinary Medicine to initiate the prebreeding program presented in this paper but suddenly died at the age of 76 on February 12, 2018.

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Photoperiod response and earliness ofS. tuberosum ssp.andigena after six cycles of recurrent selection for adaptation to long days

Cited by 29 publications

References 8 publications

Tuber induction and initiation during production and early field growth of transplants from in vitro‐derived potato plants

Tuber induction and initiation during production and early field growth of transplants from in vitro‐derived potato plants

The single Andigenum origin of Neo-Tuberosum potato materials is not supported by microsatellite and plastid marker analyses

Broadening Genetic Diversity of the Japanese Potato Gene Pool

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