Yes, variable humidity will affect growth of maize seedlings.

If humidity is low and subsequent transpiration is too high, the plant closes its stomatal openings to minimize water loss and wilting. This also means photosynthesis is slowed and subsequently, so is plant growth.

When relative humidity levels are too high or there is a lack of air circulation, a plant cannot make water evaporate (part of the transpiration process) to cool the plant or draw nutrients from the soil.

Andrew's right. The early growth can be significantly influenced by the change in humidity.

Dear Muhammad;

Humidity is one of the most important factors in the germination process, which influences the absorption of nutrients required for the growth and development of the plant, germination uniformity, and seed vigor maintenance. Low Humidity can result in deformation of the leaves and the apex of the plant, and high Humidity hampers the development of them.

Ladan Ajdanian do you know optimum humidity for maize seedlings germination?it will be great,If you can suggest any good research paper about it

Dear Muhammad,

I'm afraid the exact answer to your question is impossible. This is because there are a large number of different "regional" cultivars within maize seed that differ in physiological manifestations and other parameters.

Therefore, it would be good for you to determine optimal humidity based on screening with your seeds (though the value range can be large).

Best regards, BS