What stages does the growing period of Welsh onion (Allium fistulosum) divide into?
How many stages does the growing period of Welsh onion divide into? Please explain. The reproductive growth period of Welsh onion refers to the period from when the shoot apex of the Welsh onion transforms into a reproductive apex until bolting, flowering, and seed maturation. This period can be further divided into the following stages: 1. Seed plant regreening stage. After the seed plants are transplanted, when the temperature reaches above 7°C, they begin to grow and develop; the 3 to 4 young leaves that had differentiated before winter but had not yet grown out of the leaf sheath emerge successively in spring, and the floral organs also differentiate and grow, until the flower bud is exposed. This period is the seed plant regreening stage.
How many stages does the growing period of Welsh onion divide into? Please explain.
The reproductive growth period of Welsh onion refers to the period from when the shoot apex of the Welsh onion transforms into a reproductive apex until bolting, flowering, and seed maturation. This period can be further divided into the following stages: 1. Seed plant regreening stage. After the seed plants are transplanted, when the temperature reaches above 7°C, they begin to grow and develop; the 3 to 4 young leaves that had differentiated before winter but had not yet grown out of the leaf sheath emerge successively in spring, and the floral organs also differentiate and grow, until the flower bud is exposed. This period is the seed plant regreening stage. 2. Bolting stage: from when the last leaf has fully grown and the flower bud at the top of the flower stalk emerges from the leaf sheath, until the flower stalk has fully grown and the flower bud splits open. This is the bolting stage. This period generally lasts 10 to 15 days. 3. Flowering stage. After the involucre of the flower head splits open, the florets open successively from the center toward the periphery, until flowering ends. This is the flowering stage. 4. Seed maturation stage.
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