Selection of potato clones for tuber yield, vine maturity and frying quality

ABSTRACT Development of Brazilian potato cultivars adapted to different growing conditions, production systems and regions of the country is very important to increase the competitiveness of the national potato chain. In this sense, the objective of this work was to verify the performance of advanced potato clones for tuber yield traits, vine maturity and frying quality. An experiment was carried out in Pelotas-RS in spring, 2014. A set of nine advanced potato clones and two control cultivars were evaluated using a randomized complete block design with four replicates. Plots consisted of single rows of 20 plants spaced at 0.80 m between rows and 0.30 m between plants. The data of each trait were submitted to the deviance analysis, estimated the genetic values and selected the best genotypes using selection indices of the sum of ranks and the lowest distance from the ideotype. Clones F131-08-26 and F183-08-01, and the check ‘Asterix’ were distinguished for yield of marketable tubers. F183-08-01 and the control stood out for specific gravity and average tuber weight. Clone F161-07-02 ranked among the best for specific gravity, frying color and vine maturity. F97-07-04 and F183-08-01 and the check ‘Asterix’ were the best according to the selection indices, however, would result in losses in the frying color and vine maturity traits.

University of Florida Potato Variety Spot Light: Red LaSoda

HS-1078, a 5-page illustrated highlight sheet by Chad M. Hutchinson, Doug Gergela, Tom Donovan, David Dinkins and Edsel Redden, summarizes production and quality results for Red LaSoda potatoes from the Red-Skinned, Fresh-Market university trials conducted over the past eight seasons. Includes tables with production statistics and specific gravity; yield, vine maturity, tuber characteristics, and internal tuber defects. Published by the UF Department of Horticultural Sciences, July 2006.

AN ANALYSIS OF THE RESPONSE OF NINE POTATO GENOTYPES TO FIVE PRAIRIE ENVIRONMENTS

A study of the response of the tuber and vine traits of nine genotypes (A68710–5, Acadia Russet, F74123, Min9632, Neb71.72, Norchip, Norland, Russet Burbank, and W848) to five Prairie environments (Brooks and Edmonton, Alberta; Carman and Morden, Manitoba; Outlook, Saskatchewan) over a 3-yr period was undertaken to rationalize: (1) the location of Prairie trial sites and (2) the current system of early generation selection at an irrigated site for cultivar development for both dryland and irrigated areas in the Prairie provinces. Location × genotype interactions were significant for marketable yield traits, (P < 0.01), marketable tuber number (P < 0.01), average tuber weight (P < 0.05) and vine maturity (P < 0.05). The cause of these interactions was studied by joint regression, cluster, and principal component analysis. As expected, dryland and irrigated locations were grouped together. For marketable yield, both cluster and principal component analysis indicated that Neb71.72 and Russet Burbank formed one group and the remaining seven genotypes another. For the other tuber and vine traits, the regression approach and cluster analysis were less useful. Broad-sense heritabilities were low for yield traits and high for vine maturity, specific gravity, and chip fry color. Although the number of genotypes in the study was small, the data suggest that a moderate selection pressure for yield, with more severe selection for vine maturity, specific gravity, and chip score under irrigated conditions, should not eliminate clones adapted to the dryland areas of the Prairies. The results of this study also indicate that the two Manitoba sites as well as the two irrigated sites provide essentially the same information.Key words: Genotype-environment interaction, yield traits, quality traits