scholarly journals Taxonomic Problems in Cultivated Liriopogons

1993 ◽  
Vol 3 (2) ◽  
pp. 146-150 ◽  
Author(s):  
Paul R. Fantz
Keyword(s):  
United States ◽  
Germplasm Collection ◽  
Taxonomic Revision ◽  
The United States ◽  
Landscape Plants

Liriopogons (Liriope, Ophiopogon) are versatile landscape plants with a complexity of taxonomic problems. A taxonomic revision of liriopogons cultivated in the United States is needed; one that includes an inventory of taxa, quantitative descriptions of species and cultivars, keys and other aids for segregation and identification of taxa, documentation of taxa with vouchers deposited in herbaria, and establishment of a living germplasm collection that can serve as a standard for the nursery/landscape industries.

A Core Collection for the United States Annual Medicago Germplasm Collection

Crop Science ◽  
1994 ◽  
Vol 34 (1) ◽  
pp. 279-285 ◽  
Author(s):  
Noa Diwan ◽  
Gary R. Bauchan ◽  
Marla S. McIntosh
Keyword(s):  
United States ◽  
Core Collection ◽  
Germplasm Collection ◽  
The United States ◽  
Annual Medicago

scholarly journals Variation in Bloom Time in a Sour Cherry Germplasm Collection

HortScience ◽  
1992 ◽  
Vol 27 (10) ◽  
pp. 1113-1114 ◽  
Author(s):  
Amy F. Iezzoni ◽  
Colleen A. Mulinix
Keyword(s):  
United States ◽  
Interspecific Hybrid ◽  
Selection Pressure ◽  
Germplasm Collection ◽  
Sour Cherry ◽  
The United States ◽  
Prunus Cerasus ◽  
Commercially Important ◽  
Cold Hardy ◽  
Selection Of

Bloom times were evaluated for seedlings from four full-sib and 14 open-pollinated families of sour cherry (Prunus cerasus L.). Time of anthesis for individual seedlings ranged over 17and 16-day periods in 1989 and 1990, respectively. In both years, most seedlings bloomed later than `Montmorency', the only commercially important sour cherry cultivar in the United States. `Pitic de Iasi', the parent of the latest-blooming family, is a natural interspecific hybrid between sour cherry and the cold-hardy Russian ground cherry (P. fruticosa Pall.). Hybridization between sour and ground cherry and intense selection pressure in the colder areas of the sour cherry habitat may have favored selection of the late-blooming character.

scholarly journals 259 Screening of Lespedeza germplasm for forage quality and bioactivity

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 90-90
Author(s):  
Thomas H Terrill ◽  
Breyanna Morning ◽  
Erica Courson ◽  
Bradley Morris ◽  
Harley Naumann ◽  
...  
Keyword(s):  
United States ◽  
Native Species ◽  
Plant Genetic Resources ◽  
Germplasm Collection ◽  
The United States ◽  
Neutral Detergent Fiber ◽  
Lespedeza Cuneata ◽  
Sericea Lespedeza ◽  
Freeze Dried

Abstract Interest in the condensed tannin-containing legume sericea lespedeza (Lespedeza cuneata) as a nutraceutical (bioactive) forage for livestock has been increasing in the United States but other Lespedeza species have not been adequately evaluated. A study was completed to determine the nutritional and bioactivity potential of Lespedeza species obtained from the USDA Plant Genetic Resources Conservation Unit in Griffin, GA. Accessions from 15 Lespedeza species were planted in small plots at Fort Valley State University in Fort Valley, GA. After establishment, forage was harvested, freeze-dried, ground and analyzed for neutral detergent fiber (NDF), acid detergent fiber (ADF), in vitro true digestibility (IVTD), total phenolics (TP), and protein precipitable phenolics (PPP). Species differences were significant (P < 0.01) for all parameters measured. Lespedeza cuneata accessions, including “AUGrazer,” the cultivar most commonly used as an anti-parasitic crop in the United States had NDF, ADF, and IVTD values of 35.7±0.4%, 26.8±0.4%, and 74.3±1.2%, while L. virginica, a native species, had 34.9±3.0%, 26.0±2.5%, and 74.9±4.2%, respectively. The L. cuneata accessions averaged 179.6±4.3 and 133.6±3.5 mg/g of forage material for TP and PPP, while L. virginica averaged 564.2±24.6 and 306.5±19.9 mg/g, respectively. Other species varied from 30.5±3.0 to 47.4±4.2% NDF, 22.9±1.6 to 36.4±3.6% ADF, 55.2±5.9 to 81.6±3.4% IVTD, and 107.7±17.4 to 283.5±34.7 and 55.2±14.0 to 139.4±28.1 mg/g of forage for TP and PPP, respectively. Based upon these results, Lespedeza species tested in this study, particularly L. virginica, have potential as nutraceutical forages for livestock production systems. As L. cuneata accessions established and grew much better than other Lespedeza species in this study, agronomic testing of this germplasm collection in other environments is warranted. In addition, determining potential anti-parasitic properties of these species using in vitro and in vivo testing would be beneficial.

Identification of Sweetpotato Germplasm Resistant to Pathotypically Distinct Isolates of Meloidogyne enterolobii from the Carolinas

Plant Disease ◽  
2021 ◽  
Author(s):  
William Rutter ◽  
Phil Wadl ◽  
John David Mueller ◽  
Paula Agudelo
Keyword(s):  
United States ◽  
Ipomoea Batatas ◽  
Germplasm Collection ◽  
Resistance Breeding ◽  
The United States ◽  
Root Knot Nematode ◽  
Breeding Programs ◽  
Nematode Reproduction ◽  
Pathogenic Variants ◽  
Meloidogyne Enterolobii

Meloidogyne enterolobii (syn. mayaguensis) is an emergent species of root-knot nematode that has become a serious threat to sweetpotato (Ipomoea batatas) production in the southeastern United States. The most popular sweetpotato cultivars grown in this region are highly susceptible to M. enterolobii. As a result, this pest has spread across most of the sweetpotato growing counties in the Carolinas, threatening the industry as well as other crops in the region. The development and release of new sweetpotato cultivars with resistance to M. enterolobii would help to manage and slow the spread of this pest. To support sweetpotato resistance breeding efforts, 93 accessions selected from the USDA germplasm collection and breeding programs in the United States were screened to identify 19 lines with strong resistance to M. enterolobii. The resistance in these accessions was tested against two M. enterolobii isolates that were collected from sweetpotato production fields in the Carolinas. These isolates were found to have distinct pathotypes, with galling and nematode reproduction differences observed on cotton as well as sweetpotato. This study is the first report of intraspecific pathotypic variation in M. enterolobii and identifies sweetpotato germplasm with resistance against both pathogenic variants of this nematode.

scholarly journals A Taxonomic Research Update of Cultivated Liriopogons

1994 ◽  
Vol 4 (1) ◽  
pp. 46-48
Author(s):  
Paul R. Fantz
Keyword(s):  
United States ◽  
North Carolina ◽  
Preliminary Analysis ◽  
Taxonomic Revision ◽  
The United States ◽  
Graph Analysis ◽  
Botanical Gardens ◽  
Taxonomic Research ◽  
Polygonal Graph

A taxonomic revision of liriopogons (Liriope Lour., Ophiopogon Ker-Gawl) cultivated in the United States is in progress at North Carolina State Univ. Germplasm was obtained from nurseries, botanical gardens/arboreta, and private collectors. Nearly 17% of the germplasm was misidentified to genus; nearly 36% misidentified to species; and nearly 14% received under one name from one source contained mixed germplasm. Preliminary analysis of data indicate a minimum of five species of Liriope and eight species of Ophio-pogon are in cultivation. Six additional taxa have not flowered. Polygonal graph analysis was used to visualize biometrical data and observe relationships among taxa. Additional taxonomic publications for segregation of genera and species of liriopogons, including an inventory of taxa, quantitative descriptions, illustrations, and keys, are in progress.

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