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A seedling is a young sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves).
Feb 2, 2023 · Stage 1: Imbibition: This is the first step where the seed rapidly absorbs water from the environment causing the seed coat to swell and become soft. Stage 2: Activation: The absorbed water activates the enzymes present inside the seed that starts the growth phase in the embryo.
May 14, 2004 · One possible definition of a seedling is a young plant still reliant on food reserves stored in the seed. Once the plant has switched its nutrient dependence from internal to external sources, it can then reasonably be considered to have passed through the seedling stage.
Jul 27, 2022 · At germination, the seed’s metabolic pathways are activated, leading to embryo growth and emergence of a new seedling. Germination begins with activation by water uptake. We call this imbibition, and sometimes the seed or fruit requires special treatment for water to get into the seed and start this process.
High seed germination, significant shoot-root length, root number, and higher biomass are some of the basic criteria of vigorous seedling growth that furnish the plant to cope with biotic and abiotic stresses at the early and late stages of crop.
Seedling establishment is a critical phase in the life cycle of plants. It marks the transition from a dormant seed to a young, actively growing seedling. During this stage, the seedling must overcome various challenges to ensure successful growth and survival.
Feb 15, 2024 · The seedling stage, lasting approximately 2-3 weeks, follows successful germination. During this period, seedlings develop their first true leaves, distinct from the initial rounded cotyledons, beginning with single leaflets that evolve into sets of 3, then 5 leaflets as the root system establishes.
