scholarly journals GENERATING GENETIC DIVERSITY THROUGH DIALLEL CROSSES OF PROMISING POTATO CULTIVARS (Solanum tuberosum L.) AND STUDYING CULTIVAR HYBRIDS UNDER WATER DEFICIT STRESS

2020 ◽  
Vol 7 (2) ◽  
pp. 49-56
Author(s):  
Mohammad Reza Vesali ◽  
Reza Baradaran ◽  
Davoud Hassanpanah ◽  
Mohammad Javad Seghatoleslami
Keyword(s):  
Genetic Diversity ◽  
Solanum Tuberosum ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Potato Cultivars ◽  
Water Deficit Stress ◽  
Diallel Crosses

scholarly journals Growth and phenology of three Andean potato varieties (Solanum tuberosum L.) under water stress

2016 ◽  
Vol 34 (2) ◽  
pp. 141-154 ◽  
Author(s):  
Loyla Rodríguez P. ◽  
Danny Sanjuanelo C. ◽  
Carlos Eduardo Ñústez L. ◽  
Liz Patricia Moreno-Fonseca
Keyword(s):  
Solanum Tuberosum ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Stem Length ◽  
Water Deficit Stress ◽  
Potential Yield ◽  
Drought Period ◽  
Lateral Shoots ◽  
Negative Effect ◽  
Number Of Leaves

The water-deficit stress has a negative effect on the growth and development of plants, reducing the yield of crops. This study evaluated the effect of a water deficit on the growth and phenology of potato (Solanum tuberosum L.) varieties Diacol Capiro, Pastusa Suprema and Esmeralda. Plants that were starting tuberization were subjected to a water deficit by suspension of irrigation until reaching a foliar water potential of -2.0 MPa; later the plants were re-irrigated and recovered. The water deficit decreased the flowering time in 'Diacol Capiro', the development of leaves and maturation of fruits in 'Esmeralda' and the development of leaves and formation of lateral shoots in 'Pastusa Suprema'. In the three varieties, the water deficit did not induce a significant reduction in the stem length, the number of leaves per stem and per site or the number of main stems per site. The plants demonstrated responses related to escape and evasion mechanisms during the water deficit through the adjustment of the metabolism in order to reduce the duration of the phenological stages. The duration of the biological cycle for the three varieties was 148 days, with a requirement of 1,850 GDD. There were no differences in the potential yield, probably due to the short duration of the stress period. The three varieties demonstrated plasticity when modifying the phenology in response to the drought period.

scholarly journals Genome-Wide Association Mapping of Late Blight Tolerance Trait in Potato (Solanum tuberosum L.)

2021 ◽  
Vol 12 ◽  
Author(s):  
Fang Wang ◽  
Meiling Zou ◽  
Long Zhao ◽  
Zhiqiang Xia ◽  
Jian Wang
Keyword(s):  
Solanum Tuberosum ◽  
Late Blight ◽  
Potato Breeding ◽  
Genome Wide Association Study ◽  
Solanum Tuberosum L ◽  
Potato Cultivars ◽  
Genome Wide Association ◽  
Genome Wide ◽  
Population Structure Analysis ◽  
A Genome

Uncovering the genetic basis and optimizing the late blight tolerance trait in potatoes (Solanum tuberosum L.) are crucial for potato breeding. Late blight disease is one of the most significant diseases hindering potato production. The traits of late blight tolerance were evaluated for 284 potato cultivars to identify loci significantly associated with the late blight tolerance trait. Of all, 37 and 15 were the most tolerant to disease, and 107 and 30 were the most susceptible. A total of 22,489 high-quality single-nucleotide polymorphisms and indels were identified in 284 potato cultivars. All the potato cultivars were clustered into eight subgroups using population structure analysis and principal component analysis, which were consistent with the results of the phylogenetic tree analysis. The average genetic diversity for all 284 potato cultivars was 0.216, and the differentiation index of each subgroup was 0.025–0.149. Genome-wide linkage disequilibrium (LD) analysis demonstrated that the average LD was about 0.9 kb. A genome-wide association study using a mixed linear model identified 964 loci significantly associated with the late blight tolerance trait. Fourteen candidate genes for late blight tolerance traits were identified, including genes encoding late blight tolerance protein, chitinase 1, cytosolic nucleotide-binding site–leucine-rich repeat tolerance protein, protein kinase, ethylene-responsive transcription factor, and other potential plant tolerance-related proteins. This study provides novel insights into the genetic architecture of late blight tolerance traits and will be helpful for late blight tolerance in potato breeding.

scholarly journals In vitro Regeneration and Agrobacterium-mediated Transformation of Potato (Solanum tuberosum L.) Cultivars Grown in Mexico

2013 ◽  
Vol 22 (2) ◽  
pp. 93-105 ◽  
Author(s):  
Rose Onamu ◽  
Juan P Legaria ◽  
Jaime C Sahagún ◽  
José L Rodríguez ◽  
Joel N Pérez
Keyword(s):  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
In Vitro Regeneration ◽  
Potato Cultivars ◽  
Pcr Analysis ◽  
Nptii Gene ◽  
Histochemical Assay ◽  
Gus Histochemical Assay ◽  
Binary Plasmid

Prior to Agrobacterium-mediated genetic transformation in vitro regeneration protocol was established for three potato cultivars (Alfa, Cambray Rosa Morelos and Atlantic) grown in Mexico using leaf, node and internodal explants. Regeneration protocol was developed with or without the intervention of callus. Two potato cultivars, namely, Cambray Rosa Morelos and Alpha were transformed using Agrobacterium tumefaciens strain LBA4404 harboring binary plasmid pBI121 containing the GUS and nptII genes. GUS histochemical assay and PCR analysis were conducted on rooted shoots grown in media without hormones but supplemented with antibiotics. Transformed shoots tested positive through GUS histochemical assay and integration of nptII gene was confirmed by PCR analysis DOI: http://dx.doi.org/10.3329/ptcb.v22i2.14193 Plant Tissue Cult. & Biotech. 22(2): 93-105, 2012 (December)

Suitability of five different potato cultivars (Solanum tuberosum L.) to be processed as fresh-cut products

2009 ◽  
Vol 53 (3) ◽  
pp. 138-144 ◽  
Author(s):  
Ana B. Cabezas-Serrano ◽  
Maria L. Amodio ◽  
Rosaria Cornacchia ◽  
Raffaella Rinaldi ◽  
Giancarlo Colelli
Keyword(s):  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
Potato Cultivars ◽  
Fresh Cut

Two potato (Solanum tuberosum) varieties differ in drought tolerance due to differences in root growth at depth

2014 ◽  
Vol 41 (11) ◽  
pp. 1107 ◽  
Author(s):  
Jaime Puértolas ◽  
Carlos Ballester ◽  
E. David Elphinstone ◽  
Ian C. Dodd
Keyword(s):  
Solanum Tuberosum ◽  
Drought Tolerance ◽  
Root Growth ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Shoot Biomass ◽  
Genotypic Differences ◽  
Deep Soil ◽  
Soil Layers ◽  
Cultural Conditions

To test the hypothesis that root growth at depth is a key trait explaining some genotypic differences in drought tolerance in potato (Solanum tuberosum L.), two varieties (Horizon and Maris Piper) differing in drought tolerance were subjected to different irrigation regimes in pots in a glasshouse and in the field under a polytunnel. In the glasshouse, both cultivars showed similar gas exchange, leaf water potential, leaf xylem ABA concentration and shoot biomass independently of whether plants were grown under well watered or water deficit conditions. Under well watered conditions, root growth was three-fold higher in Horizon compared with Maris Piper, 3 weeks after emergence. Water deficit reduced this difference. In the polytunnel, applying 60% or less irrigation volume compared with full irrigation significantly decreased tuber yield in Maris Piper but not in Horizon. This was coincident with the higher root density of Horizon in deep soil layers (>40 cm), where water content was stable. The results suggest that early vigorous root proliferation may be a useful selection trait for maintaining yield of potato under restricted irrigation or rainfall, because it rapidly secures access to water stored in deep soil layers. Although selecting for vigorous root growth may assist phenotyping screening for drought tolerance, these varieties may require particular environmental or cultural conditions to express root vigour, such as sufficiently deep soils or sufficient water shortly after emergence.

RESPONSE OF FOUR POTATO CULTIVARS TO METRIBUZIN TIME AND RATE OF APPLICATION

1979 ◽  
Vol 59 (2) ◽  
pp. 417-422 ◽  
Author(s):  
J. A. IVANY
Keyword(s):  
Adverse Effect ◽  
Solanum Tuberosum ◽  
Irish Cobbler ◽  
Prince Edward Island ◽  
Solanum Tuberosum L ◽  
Potato Cultivars

Over a 4-yr period (1974–1977) the effect of metribuzin at three rates and times of application was evaluated on four potato (Solanum tuberosum L.) cultivars commonly grown on Prince Edward Island. Metribuzin applied preemergence and early postemergence had no adverse effect on marketable and total yields of Irish Cobbler, Netted Gem, Kennebec, and Sebago cultivars. Delaying metribuzin application until late postemergence resulted in significantly reduced marketable yields of Irish Cobbler and Sebago but not Netted Gem and Kennebec when compared with preemergence and early postemergence treatment. Total yields with late postemergence treatment were significantly less than those with the preemergence treatment for all four cultivars and significantly less than early postemergence treatment with Irish Cobbler and Sebago.

Genetic Diversity and Core Collection for Potato (Solanum tuberosum L.) Cultivars from Cameroon as Revealed by SSR Markers

2017 ◽  
Vol 94 (4) ◽  
pp. 449-463 ◽  
Author(s):  
Mariette Anoumaa ◽  
Nasser Kouadio Yao ◽  
Eric Bertrand Kouam ◽  
Gabriel Kanmegne ◽  
Eunice Machuka ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Solanum Tuberosum ◽  
Ssr Markers ◽  
Core Collection ◽  
Solanum Tuberosum L
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