Seed dormancy - plant growth substancesseed dormancy is, Ask an Expert

Academics

Seed Dormancy - Plant Growth Substances

Seed dormancy is critically important for the survival of plants. Factors involved in seed dormancy are:

A. Environmental Factors

Light requirement for germination-positive or negative
High or low temperatures
Absence of water

B. Internal Factors

Seed coat-prevention of gas exchange
Seed coat-mechanical effects
Embryo immaturity
Low ethylene concentration
Presence of inhibitors
Absence of growth promoters.

C. Timing Mechanism

After-ripening
Disappearance of inhibitors
Synthesis of growth promoters

View complete question

Biology, Academics

Category:- Biology
Reference No.:- M9519378

Have any Question?Write your Review or question?

Related Questions in Biology

If you diluted 1 ml of a sample into 9 ml of water then

If you diluted 1 ml of a sample into 9 ml of water, then took 1 ml of that and diluted into another 9 ml of water, and did that another two times, what is fold the dilution factor?

How does the fact that dna is compacted into chromosomes

How does the fact that DNA is compacted into chromosomes specifically help with replication/and or transcription?

Trace the flow of carbon within the process of

Trace the flow of carbon within the process of photosynthesis. Be sure to include the following terms in your description: Glucose.NADPH,ATP, Calvin cycle, RUBISCO,CO2.

Question phytoplankton chemosynthesis and mitochondriafor

Question: "Phytoplankton, Chemosynthesis, and Mitochondria" For your primary post, please respond to one of the following three topics with a post of at least 125 words that addresses each point given in the instructions ...

What types of molecular interactions occur between the

What types of molecular interactions occur between the active site and the substrate?

Which are the logical steps proposed by margulis that would

Which are the logical steps proposed by Margulis that would help explain why the accumulation of oxygen in the atmosphere led to the evolution of mitochondria.

What changes would you expect to see in the liver cells of

What changes would you expect to see in the liver cells of someone suffering from chronic alcoholism?

1 is a vitamin that sunlight on the skin typically

1. __________ is a vitamin that sunlight on the skin typically triggers within the body. 2. The specific cell type that produces bone tissue is called _____________. 3. The four components of a negative feedback loop ___ ...

If someone has been sitting without standing for 6 hours

If someone has been sitting without standing for 6 hours, and blood has been pooling in their veins, why would they feel dizzy when they stood up? How does this related to stroke volume and mean arterial pressure?

Question topic 2 article the cusp of a revolution in

Question: Topic 2 [article]: The cusp of a revolution in medicine. In a recent op-ed, Craig Venter (2)* shares his opinion that we are "on the cusp of a revolution" in medicine. (a) Describe three things that you learned ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Biology Expert