大多數初生生長發生在莖和根的頂端。初生生長是莖尖和根尖頂端分生組織細胞

大多數初生生長發生在莖和根的頂端。初生生長是莖尖和根尖頂端分生組織細胞快速分裂的結果。隨後的細胞伸長也有助於初生生長。初生生長過程中的芽和根的生長使植物能够不斷地尋找水（根）或陽光（芽）。頂端芽對植物整體生長的影響被稱為頂端優勢，它會减少沿著枝和莖邊形成的腋芽的生長。大多數針葉樹表現出强烈的頂端優勢，從而產生典型的圓錐形聖誕樹形狀。如果頂端芽被移除，那麼腋芽將開始形成側枝。園丁們在修剪植物時會利用這個事實，剪掉樹枝的頂端，從而鼓勵腋芽生長，使植物長出濃密的形狀。

結果 (英文) 1:

Most primary growth occurs at the top of the stem and roots. Primary growth is apical shoot tips and apical meristem tissue result of rapid cell division. Subsequent primary growth cells also contribute to elongation. Growth during primary growth of roots and shoots of plants can continue to look for water (root) or sunlight (Bud).
Effects on shoot apical overall growth of the plant is referred to as apical dominance, it will reduce the growth of axillary buds formed along the side branches and stems. Most conifers showed a strong apical dominance, resulting in the typical conical shape of a Christmas tree. If the top bud is removed, then the axillary buds will begin to form collateral. When gardeners pruning the plant will make use of this fact, cut the top branches, thus encouraging the growth of axillary buds, plants grow bushy shape.

結果 (英文) 2:

Most primary growth occurs at the top of the stem and root. Primary growth is the result of rapid division of cells in the stem tip and the top of the root. Subsequent cell elongation also contributes to initial growth. The growth of buds and roots during the initial growth process enables plants to constantly look for water (roots) or sunlight (buds).
The effect of the top budoning on the overall growth of the plant is known as the top advantage, which reduces the growth of the buds formed along the branches and stems. Most conifers show a strong top advantage, resulting in a typical conical Christmas tree shape. If the top buds are removed, the buds will begin to form side branches. Gardeners use this fact to cut off the top of the branches to encourage the buds to grow and grow in a dense shape.

結果 (英文) 3:

Most primary growth occurs at the top of the stem and root. Primary growth is the result of rapid division of meristem cells at the tip of stem and root tip. Subsequent cell elongation also contributes to primary growth. The growth of buds and roots during primary growth enables plants to constantly search for water (roots) or sunlight (buds).
The effect of apical buds on the overall growth of plants is called apical dominance, which reduces the growth of axillary buds along the branches and stems. Most conifers show strong apical dominance, resulting in a typical cone-shaped Christmas tree shape. If the apical bud is removed, the axillary bud will begin to form lateral branches. Gardeners take advantage of this fact when pruning plants, cutting off the top of the branches to encourage axillary buds to grow and give the plants a dense shape.