Abstract

In this work, we evaluated our results showed that the mixture blue plus red LED light might be propitious to upland cotton seedling growth and can be used as a primary lights for cotton seedling cultivation. This study might be the first paper of determining different light qualities on growth, photosynthetic characteristic and chloroplast ultra-structure of upland cotton cultivar Sumian 22. The mixture blue plus red (BR1:8) LEDs light might be propitious and necessary to upland cotton seedling growth and can be used as a primary lights for cotton seedling cultivation.

Key words: Light emitting diodes; Photosynthetic characteristic; Chloroplast ultrastructure; Spongy tissue length; Stomatal area; Upland cotton (Gossypium hirsutum L.)