Simple linear relationship between dry matter, specific gravity, and tissue specific gravity in a diploid potato breeding population

1992 ◽  
Vol 35 (2) ◽  
pp. 157-160 ◽  
Author(s):  
Mary J. Wannamaker ◽  
Wanda W. Collins ◽  
Petra Wolters
Keyword(s):  
Specific Gravity ◽  
Linear Relationship ◽  
Dry Matter ◽  
Potato Breeding ◽  
Breeding Population ◽  
Diploid Potato ◽  
Tissue Specific ◽  
Simple Linear Relationship ◽  
Diploid Potato Breeding

scholarly journals Selection for Tuber Characters Can Maintain High Specific Gravity in a Diploid Potato Breeding Population

HortScience ◽  
1990 ◽  
Vol 25 (2) ◽  
pp. 227-228 ◽  
Author(s):  
K.G. Haynes ◽  
F.L. Haynes
Keyword(s):  
Specific Gravity ◽  
Recurrent Selection ◽  
Breeding Population ◽  
High Specific Gravity ◽  
Solarium Tuberosum ◽  
Hybrid Population ◽  
Base Population ◽  
Diploid Potato Breeding ◽  
Growing Conditions ◽  
Tuber Specific Gravity

A base population of high specific gravity clones was established from a diploid hybrid population of Solarium tuberosum Group Phureja and Solarium tuberosum Group Stenotomum previously adapted to the long-day growing conditions in North Carolina. This base population was subjected to two 2-year cycles of recurrent selection. During each cycle, selections in the field were made on the basis of tuber smoothness, shape, and size. Tubers from unselected clones were bulked by plots. Tuber specific gravity was determined for the selected and unselected (bulk) clones. Tuber specific gravity was significantly greater in the selected than in the unselected clones in each cycle of selection.

scholarly journals Innovation and the commons: lessons from the governance of genetic resources in potato breeding

2020 ◽  
Author(s):  
Koen Beumer ◽  
Dirk Stemerding ◽  
Jac. A. A. Swart
Keyword(s):  
Genetic Resources ◽  
Technological Innovation ◽  
Potato Breeding ◽  
Technological Innovations ◽  
Diploid Potato ◽  
Exogenous Factor ◽  
The Commons ◽  
Diploid Potato Breeding ◽  
Governance Modes ◽  
Current Governance

Abstract This article explores the relation between innovation and resources that are governed as commons by looking at the governance of potato genetic resources, especially in the context of the emergence of hybrid diploid potato breeding that will enable potato propagation through true seeds. As a new breeding tool, hybrid diploid potato breeding may not only revolutionize traditional potato breeding practices, it may also strongly affect current governance modes of potato genetic resources as a commons. Contrary to conventional accounts of the commons that treat technological innovation mainly as an exogenous factor, we argue that technological innovation can better be understood as an endogenous factor. In particular, we develop a co-production framework of innovation and the commons that draws attention to the different ways in which innovation, commons and its governance interact. Using this framework, we demonstrate that the constitution of potato genetic resources as a commons cannot be understood without considering the various ways in which technological innovation affects resources and mediate how these are governed. While reversely, technological innovations themselves are also enabled and constrained by users who govern potato genetic resources as a shared resource. We argue that changes in the governance of genetic resources can be understood as a change from one socio-technical constellation to another, whereby innovations, resources, and institutions are continuously co-produced.

scholarly journals QTL detection in a pedigreed breeding population of diploid potato

Euphytica ◽  
2020 ◽  
Vol 216 (9) ◽  
Author(s):  
George Korontzis ◽  
Marcos Malosetti ◽  
Chaozhi Zheng ◽  
Chris Maliepaard ◽  
Han A. Mulder ◽  
...  
Keyword(s):  
Potato Breeding ◽  
Genome Wide Association Study ◽  
Breeding Population ◽  
Solanum Chacoense ◽  
Diploid Potato ◽  
Qtl Detection ◽  
Genome Wide ◽  
A Genome ◽  
Tuber Fresh Weight ◽  
Detailed Interpretation

Abstract Diploid hybrid potato breeding is emerging as an alternative to breeding tetraploid potato clones. The development of diploid breeding varieties involves recent, shallow pedigrees with a limited number of founders. Within this context, alternative QTL detection methodologies should be considered to enable identification of relevant QTLs and characterize the founders of the pedigree. To that end, we are using a dataset of multiple diploid potato $$\hbox {F}_3$$ F 3 families under selection derived by a cross between an inbred Solanum chacoense and an outbred diploid Solanum tuberosum, and identify QTLs for tuber fresh weight. We used three methods for QTL detection: (1) a Genome Wide Association Study model, (2) a linkage approach tailored to the population under study and (3) a more general approach for modelling multiallelic QTLs in complex pedigrees using identity-by-descent (IBD) probabilities. We show that all three approaches enable detection of QTLs in the population under study, but the method that makes better use of IBD information has a more direct and detailed interpretation by linking QTL alleles to the founders.

scholarly journals Testing Yield of Diploid Potato Breeding Lines for Cultivar Development.

1996 ◽  
Vol 46 (3) ◽  
pp. 245-249 ◽  
Author(s):  
K. N. Watanabe ◽  
M Orrillo ◽  
S Perez ◽  
J Crusadol ◽  
J A Watanabe
Keyword(s):  
Potato Breeding ◽  
Diploid Potato ◽  
Breeding Lines ◽  
Cultivar Development ◽  
Diploid Potato Breeding

Effect of functional female and male fertilities on crossability in diploid potato breeding

2000 ◽  
Vol 43 (2) ◽  
pp. 125-134 ◽  
Author(s):  
B. Yu. Anoshenko ◽  
V. E. Podlisskikh
Keyword(s):  
Potato Breeding ◽  
Diploid Potato ◽  
Diploid Potato Breeding

scholarly journals Evaluation of Potato (Solanum tuberosum L.) Varieties for Yield and Some Agronomic Traits

2020 ◽  
Vol 5 (1) ◽  
pp. 63-74
Author(s):  
Lemma Tessema ◽  
Wassu Mohammed ◽  
Tesfaye Abebe
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Tuber Yield ◽  
Block Design ◽  
Matter Content ◽  
Tuber Quality ◽  
Dry Matter Content ◽  
Marketable Tuber ◽  
Potato Varieties ◽  
Central Highlands

AbstractA field experiment was conducted in the central highlands of Ethiopia to evaluate the performance of potato varieties for tuber yield and to identify a superior variety in tuber yield and yield components. The experiment was laid out in a randomized complete block design with three replications at two locations in the central highlands of Ethiopia during the 2017 main cropping season. The results of analysis of variance (ANOVA) showed the presence of highly significant (P<0.01) differences among varieties over all traits studied. The mean squares for location were also significant in indicating the influence of environments on the traits of the studied varieties. However, the interaction between variety and environment had no significant effect on the performances of the potato varieties to attain 50% flowering, specific gravity and dry matter content indicating a similar performance of these traits across all locations. The variety Belete produced the maximum total tuber yield of 32.8 t ha -1 and marketable tuber yield of 29.1 t ha-1. Conversely, farmers` variety Nech Abeba produced the minimum total tuber yield of 13.8 t ha-1 and marketable tuber yield of 8.4 t ha-1. For most tuber quality traits, viz., tuber specific gravity, dry matter content, starch percentage and total starch yield, varieties Belete and Menagesha were the maximum and minimum producers, respectively. Thus, it could be concluded that varietal and environmental variations as well as their interaction had considerable influence on tuber yield and the potato’s attributes.

Studies on the supplementary feeding of sheep consuming mulga (Acacia aneura). 3. The provision of phosphorus, molasses and urea supplements under pen conditions

1976 ◽  
Vol 16 (83) ◽  
pp. 818 ◽  
Author(s):  
NP McMeniman
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Unit Volume ◽  
Phosphorus Content ◽  
Nitrogen Retention ◽  
Supplementary Feeding ◽  
Dry Matter Intake ◽  
Phosphorus Retention ◽  
Acacia Aneura

Mulga (Acacia aneura) was fed to five groups of four weaner wethers. One group was given a supplement of phosphorus (P) as NaH2PO4, another energy as molasses (E), a third both phosphorus and molasses (P + E) and the fourth urea, phosphorus and molasses (P + E + N) ; the fifth group acted as an unsupplemented control (C). Total dry matter intake during the 42 weeks of the experiment was progressively increased by the addition of P, E, P + E and P + E + N to the diet. Liveweight gain was highest inthe P + E + Ngroup followed by the P + Egroupandthen the E group. Groups P and C lost weight during the experiment. Balance studies showed that P + E and P + E + N supplementation enhanced nitrogen retention, and phosphorus supplementation increased phosphorus retention. The digestibility of mulga was increased by phosphorus supplementation. Specific gravity and phosphorus content per unit volume of bone were increased by supplementation with P + E + N and P + E, and phosphorus content was marginally increased by P supplementation.

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