Question

Abiotic factors that affect plant growth

Answer 1

Glycine betaine (GB) and proline are two major organic osmolytes that accumulate in a variety of plant species in response to environmental stresses such as drought, salinity, extreme temperatures, UV radiation and heavy metals. Although their actual roles in plant osmotolerance remain controversial, both compounds are thought to have positive effects on enzyme and membrane integrity along with adaptive roles in mediating osmotic adjustment in plants grown under stress conditions. While many studies have indicated a positive relationship …

Answer 2

There are 4 factors which affects the growth of the plants:

1. Light:

Light is the most important factor which affects the growth of the plants. Plants produce their growth hormones, nutrients, food, Oxygen etc with the help of light using Photosynthesis. Hence, A little shortage of light to the plants can affect the growth of the plants. Different types of plants eons have been developed in the different regions of the world. As we know that, Light intensify every new season. In winter, As days are shorter and nights are  longer, plants receives a little less amount of light. But this really affects the growth in height of the plant. In Spring season, Plants receives more light as compared to winter season, hence the growth of plants in spring season is quite more as compared to winter season.

2. Temperature:

Growth of plants is also depended on the temperature in surroundings of plants. In warmer areas/temperature regions, all the life processes like Transcription, respiration, photosynthesis are faster. The chemical reactions rate is also a little faster in warmth areas. Whereas, In Cold places, Plants need to firstly maintain the temperature of the plants as normal as they can, secondly, they have to produce the hormones and nutrition at larger scale to maintain the heat. Hence, The growth of the plants is faster in high temperature and low in cold temperature.

3. Water:

It is an essential to every living organism. Plants cannot produce any nutrition, hormones and also cannot perform processes like respiration, transcription, photosynthesis without water. Hence, water is an essential nutrients for all plants. A little shortage of water in plants can lead to death of the plant. When the water is given to the plants then initially, the water is converted into minerals inside the soil. Secondly, Water is provided to plant along with minerals through the process of osmosis.

4. Nutrients:

There are two types of Nutrients in plants: Macro-nutrients and Micro-nutrients. Plants need more macro-nutrients as compares to micro-nutrients. Macro-nutrients includes nitrogen, potassium, calcium, magnesium, sulfur and phosphorus which are very essential nutrients for the growth of the plants. These nutrients are not only for necessary for the growth of the plants, but also they are very involved in the every basic process of plant.

[Refer to the attachment to simply know the growth factors.

Attachment-1 credit: Colourbox

Attachment-2 credit: LoveToKnow

Attachment-3 credit: SaferBrand ]