Performance of Landscape Plants from Yugoslavia in the North Central United States

From 1975 through 1979, 38 new, landscape plant introductions from Yugoslavia were distributed for testing in the NC-7 Regional Landscape Plant Trials. Twenty-seven of these introductions were evaluated for 10 years at seven or more sites, representing a broad range of environmental conditions in the north central United States. For these 27 introductions, first-year survival averaged 71%. Only four introductions had less than 50% first-year survival. Tenth-year survival varied widely among introductions and trial sites. Eight populations were adapted to most trial sites, ten populations were adapted to some sites, and nine populations were not adapted to any site. The most promising and broadly adapted introductions were Viburnum opulus, Pinus sylvestris, and Pinus nigra. Temperature and moisture data from Yugoslavia and from trial sites were used to examine relationships between plant adaptation and climate. Statistically significant. multiple-regression models were calculated that describe the functional relationships of low temperatures and moisture conditions at trial sites with adaptation. The models predict that these plants are best adapted to sites with winters milder than those typical in the north central United States and with precipitation in excess of potential evapotranspiration

Comparative genomics of Czech vaccine strains of Bordetella pertussis.

Bordetella pertussis is a strictly human pathogen causing the respiratory infectious disease called whooping cough or pertussis. B. pertussis adaptation to acellular pertussis vaccine pressure has been repeatedly highlighted, but recent data indicate that adaptation of circulating strains started already in the era of the whole cell pertussis vaccine (wP) use. We sequenced the genomes of five B. pertussis wP vaccine strains isolated in the former Czechoslovakia in the pre-wP (1954-1957) and early wP (1958-1965) eras, when only limited population travel into and out of the country was possible. Four isolates exhibit a similar genome organization and form a distinct phylogenetic cluster with a geographic signature. The fifth strain is rather distinct, both in genome organization and SNP-based phylogeny. Surprisingly, despite isolation of this strain before 1966, its closest sequenced relative appears to be a recent isolate from the US. On the genome content level, the five vaccine strains contained both new and already described regions of difference. One of the new regions contains duplicated genes potentially associated with transport across the membrane. The prevalence of this region in recent isolates indicates that its spread might be associated with selective advantage leading to increased strain fitness

Performance of Landscape Plants from Northern Japan in the North Central United States

In 1984 and 1985, 21 landscape plant introductions from northern Japan were distributed for testing in the NC-7 Regional Ornamental Plant Trials. Seventeen of these introductions were evaluated for 10 years at six to ten sites representing a cross-section of growing conditions in the north central United States. For these 17 introductions, first-year survival averaged 60%; however, by year 10, fewer than 20% of the original 425 plants were alive. Based on these evaluations, the populations could be divided into four groups. One population of Rosa rugosa was adapted to most trial sites; two populations (Alnus hirsuta and Lonicera chrysantha) were adapted to some sites; three populations were of poorly adapted dieback shrubs, and the remaining II populations included a diverse set of trees and shrubs unadapted to any, or nearly any, trial site. Temperature and moisture data from Japan and from trial sites were used to examine relationships between plant adaptation and climate. Statistically significant, multiple-regression models were calculated to describe the functional relationships between temperature and moisture conditions and plant adaptation at the various trial sites. Our models predict that plants from northern Japan are best adapted to sites in the northeastern United States where moisture surpluses exceed those typically found in the north central United States. These models also suggest criteria to evaluate sites throughout northeastern Asia for future exploration

1980 Commercial Vegetable Variety Trial Report-Lima Beans

This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu

1980 Commercial Vegetable Variety Trial Report-Tomatoes

This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu

1980 Commercial Vegetable Variety Trial Report-Cauliflower

This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu

1980 Commercial Vegetable Variety Trial Report-Broccoli

This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu

1980 Commercial Vegetable Variety Trial Report-Peppers

This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu

1980 Commercial Vegetable Variety Trial Report-Snap Beans

This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu