READ · COMPARE · EXPLAIN
Yamasachi: Considering breeding from Ikeda’s winter
Start with Ikeda Town’s winter as a starting point to study the breeding of Yamazaki. Consider the work of burying grapevines and the relationship with breeding for cold hardiness.
Questions for this course
How should vineyard work and grape varieties be changed to prepare for harsh winters?
Before you start reading, briefly jot down your thoughts. You will rephrase them at the end.
To applied practice using the material ↓
To explanation task notes ↓Yamasachi / Learn from Grape Varieties
Also known as / Alternative names: Yamasachi grape
Update date: 2026-09-24
Cover vines with soil during winter to protect them.
Ikeda Town is a region with severe winter cold and not much snowfall. Tokachi Wine describes covering Kiomi with soil for the winter and digging it up in spring. Dealing with cold regions involves this type of vineyard work.
Cross Seimi with wild grapes
To reduce the labor needed for burying vines in soil and to breed grapes with greater cold resistance, Seima and Yamabudo (wild mountain grape) were crossed to create Yamazaki and Seimai. Although Kiyomi, Seimai, and Yamazaki share a similar background, they are not synonyms for the same grape variety.
Different varieties from the same parents
Tokachi Wine associates Yamazaki with a deeper color and firmer flavor than Seimai. Even grapes bred from the same parents do not have identical characteristics. Do not describe the finished product solely by cold resistance—also read about the fruit's features and winemaking.
What to align and what to compare.
Coping with winter
- Conditions to standardize
- Red grape varieties grown in Ikeda Town
- Conditions for comparison.
- Buried in soil and unearthed in spring / Developed for cold-hardiness
- Additional points to confirm
- Did you indicate winter labor requirements?
Relationships in cultivation
- Conditions to standardize
- Red grape varieties grown in Ikeda Town
- Conditions for comparison.
- One of Yamasachi’s parent varieties / A cross between Kiym and Yama-budo
- Additional points to confirm
- Did you verify the parent varieties?
Conditions for Comparison
- Conditions to standardize
- Red grape varieties grown in Ikeda Town
- Conditions for comparison.
- Winter labor, ripening, winemaking / Cold resistance, ripening, winemaking
- Additional points to confirm
- Did you distinguish between Seimai and Yamayuki?
Order of reading and key points to consider in each article
0 / 3 articles completed
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- 1↗
Japan
Hokkaido: Coolness and adaptation for winter survival
Interpret Hokkaido's regional climate differences.
- 2↗
Japan
Broaden the range of varieties from Koshu and Bailey A
Compare Japanese hybrid varieties.
- 3↗
Japan
Rethinking Japanese wine through topography and viticulture
Check the location of Ikeda Town and other regions.
READ · HYPOTHESIZE · RECONSIDER
Yamasachi reading comprehension: Considering breeding from the winter in Ikeda
This comparative material is based on sources. Please distinguish between the characteristics of grape varieties and the conditions of each region or product as you read.
The table is a summary of the sources below. Values given with product names or vintages are based on data for those specific items.
| Comparison items | Seimi | Yamasachi |
|---|---|---|
| Coping with winter | Buried in soil and unearthed in spring | Cultivated for cold hardiness |
| Relationships in cultivation | One of Yamasachi’s parent varieties | Crossing of Seimi and wild grapes |
| Conditions for Comparison | Winter labor, ripening, winemaking | Cold hardiness, ripening, winemaking |
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Read the explanation for each question
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What is one of Yamasachi’s parent varieties?
This is a breeding effort to adapt to winter in Hokkaido. Tokachi Wine describes how they protect Kiomé vines by burying them in soil for winter. The aim in developing Yamazaki also included reducing the workload of this operation. This question asks you to read the vineyard conditions that made breeding necessary, not just report the parentage.
What is the main purpose of covering Seimi with earth?
Vineyard tasks for protecting vines that will survive the winter.
What is the relationship with Seimai?
Even if parental origins are the same, the characteristics of selected offspring varieties differ.
Basis and sources for the exercise
Practice exercises in comparison
This comparative material is based on sources. Please distinguish between the characteristics of grape varieties and the conditions of each region or product as you read.
Read examples of organizing comparisons
| Conditions for Comparison | Seimi | Yamasachi |
|---|---|---|
| Coping with winter | Buried in soil and unearthed in spring | Cultivated for cold hardiness |
| Relationships in cultivation | One of Yamasachi’s parent varieties | Crossing of Seimi and wild grapes |
| Conditions for Comparison | Winter labor, ripening, winemaking | Cold hardiness, ripening, winemaking |
This is an organized study tool based on the designated articles for this course. You can check specific facts and sources in each article.
Explain in your own words
Compare Seimi with Yamayuki, and explain their similar and differing conditions.
Check after writing
- Did you indicate winter labor requirements?
- Did you verify the parent varieties?
- Did you distinguish between Seimai and Yamayuki?
Save response to explanation task
Compare your initial thoughts with how they have changed after reading the article.
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