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Wednesday, July 29, 2020 | History

2 edition of Effect of storage temperatures on germination of seeds of twenty sources of Ponderosa Pine found in the catalog.

Effect of storage temperatures on germination of seeds of twenty sources of Ponderosa Pine

David F. Van Haverbeke

Effect of storage temperatures on germination of seeds of twenty sources of Ponderosa Pine

by David F. Van Haverbeke

  • 301 Want to read
  • 3 Currently reading

Published by USDA Forest Service, Rocky Mountain Forest and Range Experiment Station in [Fort Collins, Colo.] .
Written in English

    Subjects:
  • Ponderosa pine -- Seeds -- Storage.,
  • Ponderosa pine -- Seeds -- Viability.

  • Edition Notes

    StatementDavid F. Van Haverbeke and Glenn W. Peterson.
    SeriesResearch note RM -- 490.
    ContributionsPeterson, Glenn W., Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    The Physical Object
    Pagination4 p. :
    ID Numbers
    Open LibraryOL15564953M

    Forest Ecology and Managemen t, 62 () - Elsevier Science Publishers B.V., Amsterdam A laboratory study of the effect of temperature on red pine seed germination M.D. Flannigan*'a, F.I. Woodwardb aForestry Canada, Petawawa NationaI Forestry Institute, P.O. Box , Chalk River, Ont. KOJ 1JO, Canada bDepartment of Animal and Plant Sciences, University of Cited by: 8.   Students will investigate the effects of air temperature on seed germination. Students will prepare seeds for germination and place them in locations of varying temperatures. Students will monitor and record data concerning the temperatures and length of the germination process. Students will develop a chart using the data to show the results.

    Effect of storage temperature on germination of seeds of twenty sources of Ponderosa Pine / View Metadata By: Van Haverbeke, David F., - Peterson, Glenn W. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) - United States. The fourth edition of this well established text incorporates very wide-ranging revisions in the light of recent advances. It provides a comprehensive overview of the physiology, biochemistry & ecology of the process of seed germination. Over one thirdof the material has been rewritten, references have been updated & new areas of interest stressed.

    Effects of stratification and temperature on seed germination speed and uniformity in central Oregon ponderosa pine (Pinus ponderosa Dougl. ex Laws.) / Related Titles. Series: Research paper PNW ; By. Weber, John C. Sorensen, Frank C. Type. Book Material. Stratification Reduced Germination of Ponderosa Pine Seed Collected in New Mexico and Southern Colorado 1 Thomas M. Smith2 AbstractThe seed year produced extremely low un-stratified germination percentages for ponderosa pine (Pinus ponderosa, Rocky Mountain form) on .


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Effect of storage temperatures on germination of seeds of twenty sources of Ponderosa Pine by David F. Van Haverbeke Download PDF EPUB FB2

Seeds and both germinated, only one seedling was included in the count. Percent germination of the three samples was averaged, and the mean served as the control germination percentage.

Seed storage. The effect of seed storage on germination was tested using seed collected in and Three seed samples were used for determining. Effects of seed water content and storage temperature on the germination parameters of white spruce, black spruce and lodgepole pine seed Article in New Forests 36(2) September Trials for each genotype were carried out using a completely randomized design with four replications of 50 seeds each.

Germination temperatures considered in each trial w 14, 16, 18,   Effect of different storage conditions (room temperature, 4°C, and −15°C) and different storage periods over 24 months on seed germination in Swertia chirayita collected from different altitudes in Sikkim Himalaya was determined.

Multivariate ANOVA revealed significant (P Cited by: We examined the effect of thermal shock on the germination of seeds of three conifers, two introduced (Pseudotsuga menziesii and Pinus ponderosa), and one native to Patagonia (Araucaria araucana).

Previous research has suggested increased susceptibility to invasions in burnt areas, and therefore, the effect of simulated fire (heat) on seed germination in these native and.

The seeds with undeveloped or immature embryo do not germinate. Certain seeds contain plant growth regulators which inhibit seed germination. Some seeds require more time for their germination.

To learn more about the seed, its parts, seed germination, its process, factors affecting seed germinations and any other related topics @ Byju’s Biology. Germination remained high when control white spruce seeds and seeds with 2–3, 5–6% WC were stored at +4°C, over all storage durations. Generally, black spruce and lodgepole pine exhibited high germination at all storage temperatures at 2–3% and 5–6% WC as well as the control (untreated) seed, for up to 60 months in by: 7.

Ponderosa pine seed germination and growth progress. AZ OFF GRID. March update for the Ponderosa Pine trees - Duration: How to stratify/grow pine trees from seeds. Seeds of two conifers species (Pinus sylvestris and Pinus halepensis) were heated to a range of temperatures similar to those registered on surface soil during natural fires (from 70° to °C) and a range of exposure times (from 1 to 5 min).

Temperatures above °C have a negative effect on the germination of both by: Effects of Irrigation Frequency and Grit Color on the Germination of Lodgepole Pine Seeds Pinto, Dumroese, and Cobos Figure 2.

Average daily temperature relationship with germina-tion capacity, peak value germination, and germination value parameters (n = 27). Figure 3. Seedbed soil matric water potential relationship withCited by: 1. Germination declied for all three species when seed was conditioned to % WC.

This loss in germination was partially recovered in white spruce seed stored at +4, and C after storage durations of 24, 12 and 48 months, respectively, and in black spruce seeds stored at and C after storage durations of 24 months. Seeds source. Seeds from nine populations of S.

vulgaris in their native area (Europe) and seven populations in invasive areas (China) were sampled in different sites in andrespectively (Table 1).After collection from the field, seeds were kept in paper bags and dried in air.

Seed collection occurred between end of May and beginning of October, with most of the seeds collected in Cited by: 2. Abstract. Effect of different storage conditions (room temperature, 4°C, and −15°C) and different storage periods over 24 months on seed germination in Swertia chirayita collected from different altitudes in Sikkim Himalaya was determined.

Multivariate ANOVA revealed significant effect of storage condition and storage period on seed germination and mean germination by: Germination of eastern redcedar Uuniperus virginiana L.) seeds was best with a hour soak in citric acid (10, ppm), with 6 weeks of moist-warm (24OC) stratification, and 10 weeks of moist-cold (5°C) stratification.

Geographic seed sources responded differently to treat- ment. Use of fresh seeds could reduce the time in moist-warm strat-Cited by: 7. The relative importance of temperatures in Literatureopening cones 31 Seed collecting and extracting—Contd.

Effect of various treatments on quantity and quality of seed 33 * '-" -'" - ^ - 50 57 57 The economy of storage and air drying. _ Germination of. Effect of storage temperature and moisture on the germination of papaya seeds - Volume 1 Issue 1 - R.

Ellis, T. Hong, E. RobertsCited by: We evaluated germination percentage on nutrient-rich soil under nurse plants and poor soil from open spaces, and the effect of seed burial (buried and unburied seeds) on seed germination of three cactus species: Coryphantha durangensis, Peniocereus greggii, and E.

longisetus, that grow under nurse plants (Muro-Perez et al., ). Seeds of each population were grown for one generation in a climate room (20 °C, 18/6 h, light/dark) in October and November One set of seeds collected from these plants grown in climate room was used for the germination experiment in a climate chamber (PQXAHM; Ningbo Southeast Instrument Co.

Ltd, Ningbo, China) in December and January at 3–4 weeks Cited by: 2. Ponderosa pine grows on a variety of soil types including igneous, metamorphic, and sedimentary. It does best on coarse-textured soils when available soil moisture is limited.

Ponderosa pine is seldom found growing naturally on heavytextured soils with a - high clay and/or silt content. Abstract. This study examines the effect of fire on the germination of Pinus pinaster seeds from a population with special adaptations to this type of disturbance, due to the high frequency of fires to which they have been subjected.

The action of fire was simulated in the laboratory using thermal shocks. Temperatures of 60, 90,and °C were used for exposure times of 1 and 5 by:.

seed germination assays of Bletia purpurea. Our objectives were to determine whether in situ germination is limited by seasonal temperatures and to determine whether tempera-ture alters responses to illumination. Bletia purpurea seeds were able to germinate to > 90% under all treatments.

The greatest germination after 3 weeks was observed atFile Size: KB.seeds were placed in an environmental chamber and were subjected to 14 hours of high temperatures and light and 10 hours of low temperatures and darkness per day to mimic diurnal fluctuations of temperature and light (C.

Baskin and J. Baskin ). Rate of germination was calculated using a modified Timson’s index of germination velocity:File Size: KB.The effect of different temperatures and different germination media in J.

curcas seeds was studied in the present work. The influence of 8 constant temperatures viz. 20°C, 22°C, 25°C, 27°C, 30°C, 32°C, 35°C and 37°C, 4 alternate temperatures viz. 37/27°C, 35/25°C.