Factors affecting seed germination in Opuntia lindheimeri Engelm. var tricolor (Griffiths) L. Benson

  • 26 Pages
  • 3.87 MB
  • English
Statementby Donato L. Garcia.
LC ClassificationsMicrofilm 42624 (Q)
The Physical Object
Paginationix, 26 leaves.
ID Numbers
Open LibraryOL1695236M
LC Control Number91954356

Germination of 0. phaecantha var. discata (Griffiths) L.D. Benson and Walk, and 0. lindheimeri Engelm. (Potter et al., ), while, temperature fluctuation improve germination of 0. puberula Pffeif. (Godincz-Alvarez and Valiente-Banuet, ).

Also in the seed coat of two former have been detected the presence of inhibitory. The optimum germination temperature for the naked seeds was 20/10°C (day/night) and light was not required for germination. No seedling emerged when the seeds were buried 6 cm deep.

The seeds were sensitive to both osmotic and salinity stress, but they germinated to 46–49% over a pH range of 4– The results of this study revealed that Cited by: The latter sample most probably was obtained from a backyard or from a commercial plantation.

According to Murillo et al. (), differences have been observed between O. lindheimeri var. tricolor (%), which has higher protein content than O. lindheimeri var. lindheimeri (%). The genetic component of this trait is difficult to separate.

the testa has been detected in the seeds of Opuntia phaecantha var. discata and. found that seeds of Opuntia lindheimeri and (). Some factors affecting the germination of seed of the. Investigation: What Factors Affect Seed Germination.

Shannan Muskopf August 3, This activity can be used as part of a unit on plants or as an activity to illustrate the scientific method. The materials are cheap and can be obtained from the grocery store. Students design an experiment to determine what factors affect seed germination.

Soil disturbance was the major factor that increased germination. Removal of the vegetation canopy improved germination only in S.

pratensis. Conditions affecting survival of seedlings were different from those affecting seed germination. Seedling survival was. It integrates advances in the diverse and rapidly-expanding field of seed science, from ecological and demographic aspects of seed production, dispersal and germination, to the molecular biology of seed development.

The book offers a broad, multidisciplinary approach that covers both theoretical and applied knowledge/5(2). Mean germination proportions for O. rastrera seeds (95% confidence limits, N 1⁄4 ) at different acid germination pretreatments, where 1–5 correspond to seeds scarified 80,Seed germination may be defined as the fundamental process by which different plant species grow from a single seed into a plant.

This process influences both crop yield and quality. A common example of seed germination is the sprouting of a seedling from a seed of an angiosperm or gymnosperm. Factors affecting seed dormancy include the presence of certain plant hormones--notably, abscisic acid, which inhibits germination, and gibberellin, which ends seed dormancy.

To break chemical dormancy, you might have to leach the seed or use cold/moist stratification or fire scarification. The book is comprised of seven chapters that tackle subjects relating to the field of germination.

Chapter 1 discusses the structure of seeds and seedlings, while Chapter 2 covers the chemical composition of seeds.

Chapter 3 tackles the factors affecting germination, and Chapter 4 deals with dormancy, germination inhibition, and stimulation.

What is Seed Germination. The process of growing of seed into a plant after getting favorably conditions is known as seed germination. This experiment helps us to know different environmental factors for germination. Seed germination project is related to biology. We can easily demonstrate this project and also get knowledge via this project.

The seed lot with a high nitrogen content absorbed water faster than the seed lot with a low nitrogen content, especially on the first day after soaking, and also showed a faster emergence, exsertion of the fourth leave, and a more uniform germination.

Moreover, the increase of seed nitrogen content as well as the prolongation of soaking time. An understanding of seed germination ecology is enhanced by information on kind of dormancy in the seeds, life cycle of the species and seasonal changes in environmental conditions such as temperature and precipitation (and soil salinity for halophytes) in the habitat from the time of seed dispersal to germination.

Temperature The temperature influences strongly the percentage and rate of seed germination, the optimum temperature varying with the kind of seeds. In general, seeds of cool-season crops, such as lettuce, celery, etc.

germinate best at relatively low temperature of 0 to 10°C, whereas seeds of warm-season crops like pumpkin, bottle gourd, etc.

The Germination of Seeds, Third Edition contains the same content in the previous edition, but with modifications in each section, containing updated information. As the first two editions, this edition attempts to treat critically the available information on seed germination and to.

Germination percentage and germination index decreased but time to start germination, time to 50% germination and mean germination time increased as seed size decreased (Figure 1 and Table 1).

Seeds of C. arvensis germinated at temperatures from 15 to 40 o C, while no germination was observed at 45 o C, the highest evaluated temperature. Field, laboratory, and greenhouse experiments were conducted to determine the seed production potential and effect of environmental factors on germination, emergence, and survival of texasweed.

Description Factors affecting seed germination in Opuntia lindheimeri Engelm. var tricolor (Griffiths) L. Benson EPUB

Texasweed produced an average of seed per plant, and 90% were viable. Seed exhibited dormancy, and prechilling did not release dormancy. Percent germination ranged from 56% for seed. *Note: For this science project you will need to develop your own experimental procedure.

Use the information in the summary tab as a starting place. If you would like to discuss your ideas or need help troubleshooting, use the Ask An Expert forum. Our Experts won't do the work for you, but they will make suggestions and offer guidance if you come to them with specific questions.

Seed Germination. Seeds of. patungensis. began to germinate after seeding 10 days and finished germination within 35 days (Figure 1). Soil types had no effect on germination dynamic meanwhile shade degree influenced the germination pro- gress.

Details Factors affecting seed germination in Opuntia lindheimeri Engelm. var tricolor (Griffiths) L. Benson EPUB

Seeds both under 0% and 40% shade treatments germinated quickly after seeding 15 days. Cactus seeds germinate fine using the above method. Thicker seeds from species like Opuntia can be soaked in water at room temperature for 24 hours prior to sowing. Adansonia. These are thick seeds and need a 24 hour soak in water before sowing.

Plant Adansonia seeds cm deep in soil. Germination is erratic and can take weeks. Germination, the sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy. The absorption of water, the passage of time, chilling, warming, oxygen availability, and light exposure may all operate in initiating the process.

SEED GERMINATION THEORY AND PRACTICE Published and distributed by Norman C. Deno Lenor Drive, State College PA (First Printing January 1, ) Every species has some mechanism for delaying germination until after the seed has been dispersed.

The Science of Seed Germination is the discovery and description of such. Thanksgiving/Small Business Saturday/Cyber Monday Weekend Sale. Save 25% on everything we offer from now to midnight Monday.

Simply type in TK (case sensitive, no spaces) into the coupon field of the shopping cart when you check out, and the discount will be applied. mental factors such as soil temperature, available moisture, and shading.

Environmental factors such as temperature, light, pH, and soil moisture are known to affect seed germination (Chachalis and Reddy ; Taylorson ).

Burial depth of seed also affects seed germination and seedling emer-gence. Weed seedlings may emerge from the soil. Factors affecting the seed quality of pre- and post-harvest seed Weather experienced during seed development Precipitation directly prior harvesting can cause preharvest sprouting of the seed (Photo 1) and may also favour the development and spread of microflora, which can discolour the seed, affect normal germination or even kill the seed.

Seeds are designed to spread throughout the environment and grow into new plants through the process called seed germination. This process causes a seed to sprout. As seeds absorb water, stored food materials become hydrated.

Enzymes in the seed become active, producing energy for the growing seed.

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Seed Germination. A seed is an embryonic plant that is enclosed in a seed coat or some kind of protection (Seed, ).A seed is the basis for any plant life; it is the essential beginning for any sort of growth. A seed is created from a previous plant or two plants pollinating with each other to create a seedling (Seed, ).Typically there are three main parts of a seed: an embryo.

In summary, seed germination is the process of a fertilized plant ovary, or seed, developing into a mature plant. Seed germination starts with imbibition, when the seed takes in water from the soil.

Factors affecting germination and seed production of Eriochloa villosa Iliya A. Bello Department Crop Science, University of Maiduguri, P.M.B.

Maiduguri, Borno State, Nigeria Harlene Hatterman-Valenti Quail Run Ave., Sioux Falls, SD Present address: North Dakota State University, Fargo, ND Micheal D. Owen Corresponding author. moisture for seed germination and seedling growth. The stacks of petri dishes were rotated every 3 to 5 days by moving the bottom dish to the top of the stack allowing better light distribution among replications.

The percentage of seeds germinated was determined at 7,14, and day intervals.III. Factors Affecting Seed Germination As mentioned previously, many seeds undergo a period of dormancy, during which metabolic activity is minimal.

In part, dormancy can be maintained by a hormone, abscisic acid (ABA), which permeates the seed coat. In order for germination to commence, this water-soluble ABA must be rinsed out of the seed coat.seed germination behavior with respect to dormancy and the factors that influence it (Bradford, ).

There are other inherent difficulties in working with seeds. Events essential for the release from dormancy and the completion of germination may occur only within a relatively few cells associated with the embryonic root axis. Thus, the.