Question

Какие почки называются вегетативными? Какие почки называются генеративными?Что произойдет с побегом, если прищипнуть его верхушку?Что такое пасынкование?Для чего проводят пасынкование помидоров, винограда Это биологии 6 класс Дам 25 балов СРОЧНО​

Answer 1

Ответ:

Объяснение:

1.Если внутри почки заключены только зачатки цветков (одного или нескольких), то её называют цветочной почкой (генеративной).

2.Прекращается рост стебля в длину, из пазушных почек начинают развиваться боковые побеги.

3.Пасынкование — простая процедура, которая стимулирует рост плодов некоторых овощных культур, помогает цветам сформировать пышные бутоны. избавляются от пасынков томатов, винограда

Answer 2

Vegetative Buds and Generative Buds

In plants, buds are small, undeveloped shoots that have the potential to grow into branches, leaves, or flowers. There are two main types of buds: vegetative buds and generative buds.

Vegetative buds are responsible for producing new stems, leaves, and branches. They are located in the axils of leaves or at the tips of stems. Vegetative buds are involved in the growth and development of the plant's vegetative parts, such as stems and leaves.

Generative buds, also known as reproductive buds or flower buds, are responsible for producing flowers and fruits. They are usually formed at the tips of branches or in the axils of leaves. Generative buds contain the reproductive structures of the plant, such as the flowers and the developing fruits.

Effect of Pruning the Apex of a Shoot

When the apex or top of a shoot is pruned or pinched, it has several effects on the growth and development of the plant. Pruning the apex of a shoot is a common horticultural practice known as "topping" or "pinching."

1. Apical Dominance: The removal of the apex of a shoot reduces the production of a hormone called auxin, which is primarily produced in the apical meristem (the growing tip of the shoot). Auxin inhibits the growth of lateral buds, maintaining apical dominance. When the apex is removed, the auxin levels decrease, and the lateral buds are released from their inhibition, allowing them to grow and develop into branches.

2. Branching: Pruning the apex of a shoot promotes branching because it stimulates the growth of lateral buds. These lateral buds, which were previously suppressed by apical dominance, start growing and developing into branches. This results in a bushier and more compact plant.

3. Flowering: In some plants, pruning the apex of a shoot can also stimulate the production of generative buds and promote flowering. By removing the apical dominance, the plant redirects its energy towards the development of flowers and fruits.

Suckering (Adventitious Shoot Formation)

Suckering, also known as adventitious shoot formation or sprouting, is a process in which new shoots or branches develop from dormant buds located on the underground parts of a plant, such as the roots or the base of the stem. Suckering is a common phenomenon in many plants, including tomatoes and grapes.

Suckering is often seen as an undesirable trait in certain plants because it can divert energy and resources away from the main stem or trunk. In horticulture, suckering is controlled through a process called suckering or shoot removal. This involves removing the suckers or adventitious shoots that emerge from the base of the plant or from the underground parts.

Purpose of Suckering in Tomatoes and Grapes

In the case of tomatoes and grapes, suckering is an important horticultural practice that is carried out to improve the quality and productivity of the plants.

1. Tomatoes: Suckering in tomatoes involves removing the suckers or adventitious shoots that emerge from the leaf axils or the base of the plant. This practice helps to redirect the plant's energy towards the development of the main stem, flowers, and fruits. It also improves air circulation and reduces the risk of diseases by reducing the density of the foliage.

2. Grapes: Suckering in grapes involves removing the suckers or adventitious shoots that emerge from the base of the vine or from the trunk. This practice helps to maintain the balance between vegetative growth and fruit production. By removing the suckers, the plant's energy is directed towards the development of the main shoots and the production of high-quality grapes.

Suckering is an important technique in horticulture as it helps to manage the growth and development of plants, improve their productivity, and maintain their overall health.

I hope this information helps! Let me know if you have any further questions.