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Technical regulations for raising Chinese gooseberry (GB / T 6001-1985)

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Technical regulations for breeding of Viburnum japonicum (GB / T 6001-1985)   ? Appendix C   Methods of seed germination

Appendix C seed germination method

Seed germination method is shown in the following table:

Methods of accelerating germination technical requirement Suitable tree species
Stratification Wet sand burial 1. The volume ratio of sand to seed is 2:1 or 3:1
2. The water content of sand is 60% of saturated water content
3. Use containers indoors or dig pits with good drainage in high terrain, and the temperature should be controlled at 0 ~ 5 ° Between C
4. Good ventilation to prevent mildew
5. Soak seeds with cold water or warm water to make the seed coat swell by absorbing water and then layer
6. The length of stratification depends on the tree species
7. Check the seeds about a week before sowing. If the seeds are not yet exposed, move them to the temperature of 20 ° C. the buds germinate at the left and right
Larix gmelinii, Pinus sylvestris var. mongolica, Abies, spruce, Pinus tabulaeformis, Platycladus orientalis, yellow pineapple, Elaeagnus angustifolia, Zanthoxylum bungeanum, lacquer tree, Eucommia ulmoides, walnut, chestnut, nanmu, camphor, Chuandong, Fengyang, Jurchen, Michelia, tung oil, etc
Stratification Snow (ice) burial 1. The volume ratio of snow (ice) to seed is 3:1
2. Crush the ice into small pieces
3. Use containers indoors or dig pits with good drainage in high terrain. Control the snow (ice) in the container or pit from melting
4. The depth of outdoor pit should not exceed the frozen layer
5. Soaking seeds with cold water or warm water, the seed coat swells and accumulates
6. Check the seeds about a week before sowing. If the seeds have not been exposed, move them to 20 ° C. The germination is accelerated at the left and right sides
Larch, Mongolian pine, Chinese pine, spruce, fir, colored wood, ash
germination Buried every other year 1. The volume ratio of sand to seed is 3:1
2. The water content of sand is 60% of saturated water content
3. The temperature should be controlled below 0C in winter and not higher than 20 in summer ° C
4. Good ventilation to prevent mildew
5. Soaking seeds with cold water or warm water, the seed coat swells and accumulates
6. Check the seeds about 15 days before sowing, if not exposed
It was moved to the temperature of about 20c to promote germination
Pinus koraiensis, Fraxinus mandshurica, juniper and Tilia amurensis
Germination by water immersion Warm water immersion 1. Use 50 ° Warm water about C
2. First pour the water into the container, and then pour the seeds while stirring.
After pouring the seeds, the water surface should be more than 10 cm higher than the seeds
3. If the water is soaked for more than one day, the water should be changed every day
4. After the seed coat swells with water, it is taken out and spread in a container and placed in 20 ° C. The germination is accelerated at the left and right sides
Larix gmelinii, Pinus sylvestris var. mongolica, Pinus tabulaeformis, Pinus armandii, Pinus Wendi, loblolly pine, Larix, Cunninghamia lanceolata, Metasequoia glyptostroboides, Platycladus orientalis, Ailanthus altissima, Paulownia, Melia, Liquidambar, nansuanzao, Xanthoceras sorbifolia, Amorpha fruticosa, Camptotheca acuminata, Jurchen, etc
Hot water immersion 1. Use 80 ~ 90 ° C's hot water
2. First pour the water into the container, and then pour the seeds while stirring,
Heat the seeds evenly. After pouring the seeds, the water surface should be more than 10 cm higher than the seeds
3. After most of the seeds are expanded, the seeds that have not expanded are screened out, and then the seeds are soaked repeatedly with hot water until most of the seeds expand
4. Spread the expanded seeds in a container and place them at about 20 "C to promote germination
Robinia pseudoacacia, Acacia formosana, Acacia macrophylla, Gemu