Seed dormancy is when seeds fail to germinate even under favorable conditions. There are two main types of seed dormancy: seed coat dormancy caused by an impermeable seed coat, and internal dormancy caused by conditions within the embryo. Dormancy helps seeds survive unfavorable seasons and provides a continuous source of new plants. It can be overcome through various treatments like scarification, hot water, or exposure to light, cold, or enzymes.
germination of seed.
the slides are prepared to provide a short but valuable concept about seed germination and different conditions associated with it.
Seed dormancy is fully explained in this ppt. it includes causes ( dormancy due to hard seed coat, dormancy due to condition of embryo, dormancy due to absence of light, dormancy due to low temperature etc. ) of seed dormancy, types of seed dormancy, various methods to remove seed dormancy like impaction, stratification, scarification, exposure of seed to light
germination of seed.
the slides are prepared to provide a short but valuable concept about seed germination and different conditions associated with it.
Seed dormancy is fully explained in this ppt. it includes causes ( dormancy due to hard seed coat, dormancy due to condition of embryo, dormancy due to absence of light, dormancy due to low temperature etc. ) of seed dormancy, types of seed dormancy, various methods to remove seed dormancy like impaction, stratification, scarification, exposure of seed to light
This presentation describes about the dormancy, types of dormancy (seed dormancy and bud dormancy) as well as methods to overcome the bud and seed dormancy in detail.
Seeding Plants for the School Garden ~ MA Ag in Classroom
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double Food Production from your School Garden with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases Food Production from School Gardens
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
Seeding Plants for the School Garden
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double Food Production from your School Garden with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases Food Production from School Gardens
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
This presentation describes about the dormancy, types of dormancy (seed dormancy and bud dormancy) as well as methods to overcome the bud and seed dormancy in detail.
Seeding Plants for the School Garden ~ MA Ag in Classroom
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double Food Production from your School Garden with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases Food Production from School Gardens
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
Seeding Plants for the School Garden
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double Food Production from your School Garden with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases Food Production from School Gardens
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
2. *
Some time the growth is suspended because of
the lack of favorable conditions in the
environment.
Such seeds will germinate if they are supplied
with water and suitable temperature.
In many other cases, even if they are not
provided with water etc.
This failure of seeds to germinate even under
favorable conditions is termed as Dormancy.
3. *
*The seed is called dormant and the phenomenon
is called dormancy.
*In majority of the cases, true dormancy helps the
seed to survive through an unfavorable season
e.g, very cold winter or a very hot summer
4. *
*Seed dormancy can be defined as the state or a
condition in which seeds are prevented from
germinating even under the favorable environmental
conditions.
*DORMANT:Not active
5. *
There are two types of seed dormancy.
*Seed coat(physical)Dormancy.
*Internal Dormancy.
6. *The dormancy of the seeds is regulated by
hormones or by temperature and restricted
oxygen uptake by hard seed-coat.
7. *
*Seed coats impermeable to water. ...
*Seeds coats impermeable to oxygen. ...
*Immaturity of the Embryo. ...
*Germination Inhibitors. ...
*Chilling or low temperature requirement. ...
*Light sensitive seeds.
*High temperature
8. *
*Dormancy helps seeds to remain alive in the soil for
several years and provides a continuous source of
new plants, even when all the mature plants of the
area have died down due to natural disasters.
9. *
* Exogenous Dormancy
Exogenous dormancy Exogenous dormancy is caused
by conditions outside the embryo.
*Endogenous Dormancy
Endogenous dormancy is caused by conditions within
the embryo itself
10. These are methods to overcome seed dormancy.
Artificial overcoming seed dormancy.
Treatment with hot water.
Hydraulic pressure of upto 2000kg for 5-20
mint.
11. *
Weakening of seed coat by mechanical abrasion or
injury.
Action of digestive enzymes present in alimentary
canals of birds and other animals which happens to
feed on their fruits.
Leaching of inhibitors present in seed coa.
Inactivation or oxidation of inhibitors by heat, cold
and light
12. *
*Hard seed coat.
*Mechanical resistance.
*Gas imperability.
*Dormancy due to specific light requirements.
*Dormancy due to germination inhibitors.