scholarly journals Seed Germination of Three Provenances of Rhododendron catawbiense: Influence of Light and Temperature

1994 ◽  
Vol 12 (3) ◽  
pp. 155-158 ◽  
Author(s):  
D. Bradley Rowe ◽  
Frank A. Blazich ◽  
Stuart L. Warren ◽  
Thomas G. Ranney
Keyword(s):  
United States ◽  
Seed Germination ◽  
Southeastern United States ◽  
Total Darkness ◽  
Temperature Requirements ◽  
And Storage

Abstract Seeds of three provenances of Rhododendron catawbiense Michx. (Catawba rhododendron) were collected during Fall 1992 from the following localities in the southeastern United States: Cherokee Co., GA [34°20′N, 84°23′W, elev. = 320 m (1050 ft)], Johnston Co., NC [35°45′N, 78°12′W, elev. = 67 m (220 ft)], and Yancey Co., NC [35°45′N, 82°16′W, elev. = 1954 m (6410 ft)]. Following drying for 1 month and storage at 4°C (39°F), seeds were removed from storage in January 1993 and germinated at 25°C (77°F) or an 8/16 hr thermoperiod of 25°/15°C (77°/59°F) with daily photoperiods of 0, ½, 1, 2, 4, 8, 12, or 24 hr. Regardless of temperature and provenance, seeds required light for germination. Negligible germination for all provenances in total darkness was overcome by daily photoperiods as short as ½ hr. All provenances commenced germination earlier at 25°C (77°F) than at 25°/15°C (77°/59°F). Mean germination at day 24 for both temperature treatments and for all photoperiods with the exception of total darkness was 98%, 90%, and 80% for the Yancey, Johnston, and Cherokee Co. provenances respectively. Light and temperature requirements for seed germination of all provenances were similar, although seeds of the higher elevation, Yancey Co. provenance exhibited greater vigor; they germinated at a faster rate with greater cumulative germination.

Ceramics and Foodways at Parchman Place

2019 ◽  
pp. 58-89
Author(s):  
Erin S. Nelson
Keyword(s):  
United States ◽  
Functional Analysis ◽  
Native American ◽  
Correspondence Analysis ◽  
Southeastern United States ◽  
American People ◽  
And Storage

This chapter explores Mississippian foodways at Parchman Place through a functional analysis of ceramics and a consideration of the foodways of the Native American people of the southeastern United States—the descendants of Mississippian communities. Correspondence Analysis (CA) of the results indicate the manufacture and use of two distinct pottery assemblages: (1) a baseline domestic assemblage used for everyday cooking, serving, and storage; and (2) a special-use serving assemblage used for community-wide eating events or feasts. These community feasting events played an important role in the founding and ceremonial maintenance of the Mississippian community at Parchman Place.

scholarly journals In Vitro Seed Germination of Kalmia latifolia L. Hybrids: A Means for Improving Germination and Speeding Up Breeding Cycle

HortScience ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 535-540 ◽  
Author(s):  
He Li ◽  
Donglin Zhang
Keyword(s):  
United States ◽  
Seed Germination ◽  
Southeastern United States ◽  
Germination Percentage ◽  
Kalmia Latifolia ◽  
Germination Time ◽  
Hybrid Seeds ◽  
Mature Seeds ◽  
Mountain Laurel

Kalmia latifolia L. (mountain laurel), a member of Ericaceae, is a beautiful ornamental shrub native to the eastern United States. The plant is not common in the southeastern United States landscapes because of the limited heat tolerance of most commercial cultivars. Breeding of heat-tolerant cultivars can be achieved by cross hybridization, but is often challenged by low germination percentage, long germination time, and potential abortion of cross-hybridized seeds. We used in vitro seed germination to enhance germination and shorten germination time and investigated the appropriate collecting time, optimal basal medium, and pH for this approach. Collecting time affected in vitro seed germination, with more mature hybrid seeds [collected 4–5 months after pollination (MAP)] having higher germination rate (90% in 4 weeks) than the less mature seeds collected in 2 MAP (20% in 7 weeks). Seedlings from the mature seeds also produced two true leaves on average after 8 weeks of culture, whereas seedlings from the less mature seeds had no true leaves. Woody Plant Medium (WPM) better enhanced in vitro seed germination compared with Murashige and Skoog (MS) or Gamborg’s B5 (B5) medium. WPM yielded higher germination (98%) than MS (90%) and significantly greater total leaf area per seedling (67 mm3) than MS (50 mm3) and B5 (52 mm3) for seeds of ‘Firecracker’ × ‘Snowdrift’. Similar effects had been observed on seeds from ‘Little Linda’ × ‘Starburst’ and ‘Pristine’ × ‘Peppermint’. The pH ranging from 4.2 to 5.4 did not affect seed germination and seedling development of mountain laurel hybrids. Our protocol enabled early collection of mountain laurel hybrid seeds 1 month before their full maturation and permitted seeds to germinate in 4 weeks on WPM, which shortened the period from crossing to the seedling stage from up to 15 to 6 months and enhanced germination percentage from 30% to more than 90% compared with traditional seed germination. This protocol should be applied to promote the breeding and selection of new mountain laurel cultivars for the southeastern United States landscapes.

scholarly journals INFLUENCE OF SEED TREATMENTS ON GERMINATION OF Aleurites fordii

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 581d-581
Author(s):  
Drew Tidmore
Keyword(s):  
United States ◽  
Seed Germination ◽  
Southeastern United States ◽  
Jet Engines ◽  
Seed Treatments ◽  
High Quality ◽  
Tung Oil ◽  
The Us

The tung-oil tree (Aleurites fordii) was planted extensively in the southeastern United States in the 40's and 50's for their high quality oil used in jet engines and paint. Elimination of import tariffs destroyed the US industry. There is a possibility of a resurgence in popularity of this species as an ornamental because of its large leaves, spring flowers, and dense growth. If nurseries begin growing tung-oil trees they must have more information on the most efficient means of seed germination. One hundred percent of the seeds with intact shells germinated in 9 weeks if they received either 24 hr stratification or 24 hr. soak. Eighty-three percent of the untreated intact seeds germinated in the same period. Shell removal sped up germination as evidenced by 27% germination in 5 weeks. However the process left seeds susceptible since only 36% had germinated in 9 weeks.

scholarly journals Woody Goldenrod, Chrysoma pauciflosculosa

EDIS ◽  
2018 ◽  
Vol 2018 (5) ◽  
Author(s):  
Debbie Miller ◽  
Mack Thetford ◽  
Chris Verlinde ◽  
Gabriel Campbell ◽  
Ashlynn Smith
Keyword(s):  
United States ◽  
North Carolina ◽  
Seed Germination ◽  
Plant Communities ◽  
Native Plants ◽  
Southeastern United States ◽  
Schizachyrium Scoparium ◽  
Fact Sheet ◽  
Landscape Plant ◽  
Florida Panhandle

Woody goldenrod is found in beach dunes, scrub, and sandhill plant communities. It occurs in the Panhandle ofFlorida and more broadly in the southeastern United States west to Mississippi and northeast to North Carolina. This plant may leach chemicals into the soil that inhibit seed germination of gulf bluestem (Schizachyrium scoparium var. scoparium) (Fischer et al. 1994). Woody goldenrod is an underused landscape plant with a prolific fall color from flowers that attract numerous pollinators.https://edis.ifas.ufl.edu/sg165 Note: This fact sheet is also available as a chapter in a comprehensive manual titled Dune Restoration and Enhancement for the Florida Panhandle,  Please see the manual for more information about other useful and attractive native plants for dunes and for further information about restoration and preservation techniques.

Seed germination and storage behaviour of Lapiedra martinezii (Amaryllidaceae)

2016 ◽  
Vol 44 (1) ◽  
pp. 199-206 ◽  
Author(s):  
J. Juan-Vicedo ◽  
J. Fernández-Pereira ◽  
S. Ríos ◽  
J.-L. Casas ◽  
I. Martín
Keyword(s):  
Seed Germination ◽  
And Storage

Does Enhancing Mind Perception Affect Conspiracy Belief?

2019 ◽  
Author(s):  
Jorge Noguera
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Social Discourse ◽  
Psychological Processes ◽  
Social Psychological ◽  
Conspiracy Theories ◽  
Mind Perception ◽  
Mixed Anova ◽  
Interaction Term ◽  
The Mind

This study was conducted to determine the effectiveness of a novel mind perception manipulation. Mind perception is currently theorized to be an essential aspect of a number of human social psychological processes. Thus, a successful manipulation would allow for the causal study of those processes. This manipulation was created in an attempt to explore the downstream impact of mind perception on the endorsement of conspiracy theories. Conspiracy theories are steadily becoming more and more prominent in social discourse. Endorsement of conspiracy theories are beginning to show real world ramifications such as a danger to human health (e.g., in the anti-vaccination movement). A sample of college students (valid N = 53) from a large rural institution in the southeastern United States participated for course credit. These participants completed a mind perception pretest, were randomly assigned to either the manipulation in question (in which participants are asked to consider the ‘mind’ of several targets and write their thoughts about them) or the control condition, and then they completed a posttest. The mixed ANOVA revealed that the interaction term between Time and Condition was not significant. Because the manipulation did not work, other analyses were aborted, in accord with the pre-registration. My Discussion focuses on the procedures and potential shortcomings of this manipulation, in an effort to lay the groundwork for a successful one.

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