2 edition of Overcoming temperature-dependent dormancy of southwestern ponderosa pine seed found in the catalog.
Overcoming temperature-dependent dormancy of southwestern ponderosa pine seed
L. J Heidmann
by USDA Forest Service, Rocky Mountain Forest and Range Experiment Station in [Fort Collins. Colo.]
|Series||Research note RM -- 406|
|Contributions||Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)|
|The Physical Object|
|Pagination||4 p. ;|
To our knowledge, this is the first book to cover the topic of biotic stress and yield loss. Although one type of biotic stress—arthropod injury—may be better understood than the others, plant responses to biotic stresses continue to be largely ignored and poorly understood. United States Department of Agriculture Forest Service Rocky Mountain Research Station Proceedings RMRS-P December National Proceedings: Forest and Conservation Nursery Associations – Haase DL, Pinto JR, Riley LE, tech. coords. National Proceedings: Forest and Conservation Nursery Associations— RMRS-P
Projected onset of mosquito season is delayed in the southwestern United States because of extremely dry and hot spring and summers; however, increased temperature and late summer and fall rains extend the mosquito season. These results are unique in being a broad-scale calculation of the projected impacts of climate change on a WNV vector. Southern pine beetle (SPB; Dendroctonus frontalis Zimmerman), a native insect that has historically affected pine (Pinus spp.) ecosystems in the southeastern U.S., has recently expanded northward causing extensive tree mortality in pitch pine (P. rigida) and pitch pine-oak (Quercus spp.) forests of eastern Long Island, NY.
No category; Wildland Fire in Ecosystems Effects of Fire on Flora. no category; canadian forest service service canadien des forÊts canadian wood fibre centre.
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Title. Overcoming temperature-dependent dormancy of southwestern ponderosa pine seed / Related Titles. Series: Research note RM ; By. Heidmann, L.
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.). Get this from a library. Overcoming temperature-dependent dormancy of southwestern ponderosa pine seed. [L J Heidmann; United States. Department of Agriculture.; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)].
Get this from a library. Overcoming temperature-dependent dormancy of southwestern ponderosa pine seed. [L J Heidmann; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)].
Overcoming temperature-dependent dormancy of southwestern ponderosa pine seed by Heidmann, L. J ; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)Pages: 8.
Subjects: (Charles Horton), (John Strong), (Thomas Conrad), Abies Arceuthobium Botanical specimens Brandegee, Townshend Stith, Cactaceae Collection and preservation Convovulaceae Correspondence Cuscuta Eaton, Daniel Cady, Engelmann, George, Fagaceae.
Breaking Dormancy In Seed Germination. words (13 pages) Essay in Biology. 09/05/17 Biology Reference this Disclaimer: This work has been submitted by a student. This is not an example of the work produced by our Essay Writing Service. You can view samples of our professional work here.
The expression of seed dormancy related to germination temperature was studied in 25 wheat genotypes grown in the field at two locations near Zagreb and Županja in Croatia during / growing season.
Germination tests were conducted at 15, 20 and 25 °C at harvest maturity (Time 1) as well as after 10 days (Time 2) and 15 months (Time 3) of seed after-ripening at room temperature Cited by: 9.
In the temperate region temperature is the main factor influencing the germination period of plant species. The purpose of this study was to examine effects of constant and fluctuating temperatures on dormancy and germination under laboratory and field conditions in the three wetland species Lycopus europaeus, Mentha aquatica and Stachys by: Seed dormancy and germination Seed dormancy is defined as a temporary failure of an intact, viable seed to complete germination under conditions that favor germination (Bewley, ).
Seed dormancy assessment is based on seed germination, which is the result of the balance between the degree of embryo dormancy and the embryo growth potential to File Size: 8MB.
Temperature-dependent seed germination in Watsonia species related to geographic distribution Article (PDF Available) in South African Journal of Botany 73(4) November with 84 Reads. Linear regression analysis indicates that initial amount of ponderosa pine basal area is a good predictor variable for the amount of basal area affected.
Negrón, J.F., Popp, J.B. Probability of ponderosa pine infestation by mountain pine beetle in the Colorado front range. Forest Ecology and. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Light and temperature sensing and signaling in induction of bud dormancy in woody plants Article (PDF Available) in Plant Molecular Biology 73() March with Reads.
Soybean (Glycine max (L.) Mewr) seed coat respiration rates in response to nging 02concentrati andtemperature wereea expermntally and with a mathematl analysis. The experimbnl observations showed seed coat respiratio rates were sensitive to 02 concentratio belowmicromole02cmTherewanasteadydecline in respiration rates fromthe saturting02 Cited by: 8.
The use of dormancy population parameters such as T l and T h (Washitani, ; Grundy et al., ) in combination with thermal‐time models for the estimation of θ 1 of the fraction of nondormant seeds (Batlla & Benech‐Arnold, ), provided a flexible approach to clearly disentangle the effects of temperature on seed dormancy from those Cited by: Certain ecotypes of Acer rubrum did not show seed or bud dormancy (Perry & Wang, ; Perry, ), but buds of northern ecotypes became dormant and required chilling, while only some of their seeds exhibited dormancy (Farmer & Cunningham, ; Farmer &.
“Seed zone,” “seed source,” and “seed lot” are terms used to identify seed collections. A seed zone is a geographic area that has relatively similar climate and soil type (figure ). For some native species, seed zones or transfer guidelines have been defined by geneticists to help land managers choose appropriate seed sources.
The predominant emphasis on harmful effects of environmental stresses on growth of woody plants has obscured some very beneficial effects of such stresses. Slowly increasing stresses may induce physiological adjustment that protects plants from the growth inhibition and/or injury that follow when environmental stresses are abruptly imposed.
In addition, short exposures of woody plants to Cited by: United States Department of Agriculture Forest Service Rocky Mountain Research Station Proceedings RMRS-P May National Proceedings: Forest and Conservation Nursery Associations Seeds 2 and 7 have had their wings removed by cleaning.
Green ash (Fraxinus pennsylvanica Marsh.) 2. Ponderosa pine (Pinus ponderosa P. & C. Lawson) 3. vi Woody Plant Seed Manual Using This Book dormancy 25 Morphological dormancy 26 Combined dormancy 26 Double dormacy 26 Secondary dormancy 26 Overcoming Dormancy 26 Seedcoat dormancy 5/5(1).
Most terms of seed biology and seed technology have been defined according to the glos- sary of the IUFRO Working Party S “Seed Problems” (Bonner ). Those who use this book should realize that much new information on seeds of woody plants has appeared in .Invasive Plants - Ecological and Agricultural Aspects код для вставки.Seedlings for planting should be grown from seed col vidual plots of almost 1, seeds per hectare (, Ponderosa pine seed retain viability for long periods of ed and stored at Fort Valley for 27 years at a (mc) of % lected from an area near the eventual planting site that is similar in elevation and climate (Schubert and others ).