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

Abstract

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.

Early Generation Selection within a Diploid Hybrid Solanum tuberosum Groups Phureja and Stenotomum Population for the Intense Yellow-flesh Creamer Potato Market

“…Thirty-seven (16.3%) of these were selected in both FL 2015 and ME 2015. The percentages for selected clones between ME and FL were higher than an earlier study (9.7%) looking at early generation selection in tetraploid clones undergoing evaluation for more traditional markets (Haynes et al, 2012). FL and ME 2015 both agreed to discard 70 clones (30.8%), which was lower than in the previously mentioned study where 55.5% of the clones were discarded (Haynes et al, 2012).…”

“…The percentages for selected clones between ME and FL were higher than an earlier study (9.7%) looking at early generation selection in tetraploid clones undergoing evaluation for more traditional markets (Haynes et al, 2012). FL and ME 2015 both agreed to discard 70 clones (30.8%), which was lower than in the previously mentioned study where 55.5% of the clones were discarded (Haynes et al, 2012). FL and ME 2015 disagreed on the fate of the remaining 120 clones (52.9%), which was higher than in the previously mentioned study where they disagreed on 34.8% of the clones.…”

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

“…Cross prediction based on progeny mean has also been practised for tuber blight and foliage blight (Caligari et al 1983) as well as potato cyst nematodes Globodera pallida (Phillips 1981). Haynes et al (2012) studied if parents that produce progeny with broad adaptation could be identified early in a potato breeding programme. For this seed of all second field generation clones were distributed to five locations for selection.…”

Correlation Between True Seed and Tuber Dormancy in a Solanum Tuberosum Group Phureja × Stenotomum Population

“…Seed dormancy in potatoes, has been positively correlated with tuber dormancy (Simmonds, 1964). So, the quality seed (TPS) can not only be related to final yields, but might also affect seed tuber quality (Barrington, 1971) [11][12][13][14][15].…”