Phytotherapy Techniques for Seed Germination

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Questions and Answers

What percentage of germination was recorded for seeds stored at 4°C for 24 days?

75%

29% (correct)

50%

Which method can be used to enhance germination for slow germinating seeds?

Using a peat-based growing medium

Soaking in a solution of nitrogen fertilizer

Applying a heat treatment

Soaking in water or a 0.2% solution of gibberellic acid (correct)

Which storage condition is optimal for preserving seed viability, as indicated in the information provided?

In sunlight

Room temperature

Frozen at -18°C

At 4°C (correct)

In the context of medicinal plants, what is crucial for determining the collection timing?

The plant's flowering time and growth stage Signup and view all the answers

What factor is specifically mentioned as influencing germination in the provided information?

Seed soaking duration Signup and view all the answers

What is the effect of air-drying Colchicum autumnale seeds on their germination rate?

It reduces the germination rate to around 5% in the first year. Signup and view all the answers

When is the best time to sow Colchicum autumnale seeds to ensure maximum germination?

Immediately after harvesting when the capsules dehisce. Signup and view all the answers

What is the maximum percentage of germination achievable in the first year when sowing fresh Colchicum autumnale seeds?

30% Signup and view all the answers

What is a potential delay in germination for Colchicum autumnale seeds if they are dried for too long?

They may not germinate for up to 5 years. Signup and view all the answers

Which characteristic of Colchicum autumnale seeds significantly affects their germination?

Moisture content during storage. Signup and view all the answers

What is the recommended storage condition for seeds if they are not planted immediately?

In a cool and dry place Signup and view all the answers

Which of the following seeds is known to lose its germination power rapidly if allowed to dry?

Cinnamon seeds Signup and view all the answers

How does long-term storage affect seed germination rates?

It usually decreases germination percentages Signup and view all the answers

When should seeds be collected to optimize their germination potential?

At their peak ripeness Signup and view all the answers

What is a common factor influencing the germination of seeds such as coca and nutmeg?

They rapidly lose germination power if stored improperly Signup and view all the answers

Study Notes

Seed Storage and Germination

Seeds stored at 4°C for 24 days showed varied germination rates: 29% and 0%.
Slow-germinating seeds benefit from soaking in water or a 0.2% gibberellic acid solution for 48 hours prior to sowing.
If seeds are not planted immediately, they should be kept in a cool, dry environment for preservation.

Seed Sensitivity to Storage Conditions

Certain seeds, like cinnamon, coca, and nutmeg, quickly lose germination viability when dried or stored for brief periods.
Long-term storage generally leads to a decreased germination percentage across all seeds.

Importance of Immediate Sowing

For some seeds, immediate sowing is critical; for example, Colchicum autumnale seeds show reduced germination if air-dried for even a few days.
Air-dried Colchicum autumnale seeds may germinate at only 5% after one year, with some seeds potentially taking up to five years to germinate.
Sowing fresh seeds from dehisced capsules can yield a germination rate of 30% in the first year.

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Description

This quiz explores the techniques and effects of different treatments on seed germination, specifically referring to novogranatense seeds. It discusses the impact of temperature storage and chemical solutions on the germination rates. Test your understanding of phytotherapy and its applications in seed biology.