First clonal generation potato seedling selection at two locations

Davies, H. T.; Johnston, G. R.

doi:10.1007/bf02860949

Cited by 19 publications

(6 citation statements)

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“…Of the 97 selections made at one location, and the 98 selections made at the second location, only 21 were selected by both locations. Davies and Johnston (1965) reported that growing duplicate first clonal generation materials at two Canadian locations, one in Ontario, the other in New Brunswick, while resulting in a high degree of duplication since 72-82 % of the clones were discarded by both selectors, nevertheless, resulted in the identification of many selections suitable for the Ontario location that the breeding location in New Brunswick discarded. Harris et al (1967) evaluated 210 first field generation clones at three Canadian locations and concluded that selecting initially at the breeding location did not appear to result in the loss of clones potentially useful for the two prairie locations.…”

Section: Discussionmentioning

confidence: 99%

“…In two separate studies looking at the agreement between first clonal generation materials selected in two locations, both Blomquist and Lauer (1962) and Davies and Johnston (1965) found that a small percentage of clones were selected at both locations. Only 2.3 % of the clones were selected at two locations in Minnesota (Blomquist and Lauer 1962).…”

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confidence: 99%

“…Only 2.3 % of the clones were selected at two locations in Minnesota (Blomquist and Lauer 1962). In Davies and Johnston's (1965) study, both researchers selected at the New Brunswick and Ontario, Canada sites: Davies selected 5.2 % of the clones at both locations, Johnston selected 7.5 % of the clones at both locations.…”

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Early generation selection at multiple locations may identify potato parents that produce more widely adapted progeny

et al. 2012

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Potato production in the eastern United States occurs over a wide range of environments from Maine to Florida; many of these states do not have a breeding program. Initial selections are usually made at the breeding location for more than 2 years before undergoing evaluation elsewhere, at which point, few clones remain from the original population. The purpose of this study was to determine if parents that produce progeny with broad adaptation could be identified early in the USDA/ARS Potato Breeding Program. For 3 years (2007)(2008)(2009), seed of all second field generation clones was distributed to five locations for selection. In 2008, 2009 and 2010, selections were made among 339, 321, and 381 clones, respectively. For each parent in each year, Chi-square values were calculated from the observed and expected number of progeny selected. Each year, parents that produced poorly-or broadlyadapted offspring were identified. Among the progeny selected at three or more locations, 27 to 70 % had not been selected by the breeding program. Early generation selection can be used to identify parents that produce broadly adapted progeny and may identify broadly adapted progeny before they are discarded by the breeding program. Because potatoes display such strong genotype 9 environment interactions, this selection approach may be particularly beneficial for selecting potato cultivars with broad adaptation.

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Section: Discussionmentioning

confidence: 99%

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Early generation selection at multiple locations may identify potato parents that produce more widely adapted progeny

et al. 2012

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“…Neele et al (1988) reported that the use of two-plant plots instead of one-plant ones in C1 helped reduce the environmental variance, but it had only slightly positive effect on the selection efficiency. In two separate studies, looking at the agreement between C1 materials selected in two locations, both Blomquist and Lauer (1962) and Davies and Johnston (1965) found that a small percentage of clones were selected at both locations. Only 2.3% of the clones were selected at two locations in Minnesota (Blomquist and Lauer 1962).…”

Section: Selection Of Superior Clones In the Segregating Progenymentioning

confidence: 99%

Challenges and Way-forward in Selection of Superior Parents, Crosses and Clones in Potato Breeding

Gopal

2015

Potato Res.

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The success of any potato breeding programme depends upon the selection of superior parents and cross combinations, and superior clones from the segregating progenies. However, due to the tetrasomic inheritance and heterozygous nature of cultivated potato, potato breeding has remained empirical, cumbersome and timeconsuming. Potato breeders have used a number of approaches to simplify and improve the efficiency of potato breeding. These include use of mid-parent/mid-self values, genetic diversity, combining ability, estimated breeding values and progeny tests for the selection of parents and cross combinations. The selection of superior clones from the segregating progeny has been hampered by low efficiency of selection in early generations particularly for tuber yield and its components. The possibility of in vitro selection and production of microtubers for early large scale trials has been explored. The procedures used and constraints observed are reviewed and discussed in this paper.

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“…If evaluation is carried out on the phenotypic performance of a single, unreplicated, plant plot, micro-environmental variation may hamper effective selection (DAVIES & JOHNSTON, 1965, 1968. The size of tubers used to plant the first clonal year can have a large effect on yield produced .…”

Section: Introductionmentioning

confidence: 99%

A comparison between single plant plots and five plant plots for the initial selection stage of a potato breeding programme

Brown

1987

Euphytica

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The efficiency of single plant selection in the initial selection stage of a potato breeding programme was examined. A random sample of potato clones was grown in single plant plots and also in two replicates of five plant plots. After harvest, each plot was visually assessed by three potato breeders; total tuber weight and number of tubers per plant were also recorded, from which mean tuber weight was calculated. The error variances of the single plant plots were found to be significantly greater than from the five plant plots for total tuber weight, mean tuber weight and number oftubers per plant, but not significantly different for breeders' preference. Coefficients of correlation between single and five plants plots were significantly greater than zero for all traits examined, but they were lower than the corresponding correlations between the two replicates of five plant plots. Although a random sample of clones was examined, each clone had been assessed for breeders' preference the previous year. When the clones were grouped according to the previous years preference scores, it was found that the correlation coefficients between single and five plant plots for breeders' preference were inversely related, in magnitude, to the mean preference score of each group. It was concluded that single plant selection was generally ineffective, particularly when only the 'better' clones, from the previous years assessment, are examined.

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First clonal generation potato seedling selection at two locations

Cited by 19 publications

References 1 publication

Early generation selection at multiple locations may identify potato parents that produce more widely adapted progeny

Early generation selection at multiple locations may identify potato parents that produce more widely adapted progeny

Challenges and Way-forward in Selection of Superior Parents, Crosses and Clones in Potato Breeding

A comparison between single plant plots and five plant plots for the initial selection stage of a potato breeding programme

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