Effects of Red and Blue Illumination from Light-emitting Diode(LED)on Seedling Quality of Different Rice Cultivars
WANG Guo-li
SONG Guan-hua
HUANG Su-xing
ZHU Xiao-xia
Abstract：In order to probe the illumination-requirement law of raising rice seedlings and promote the factory production of raising rice seedlings,two rice cultivars(Hefeng and Huangxiu)were used to study the effect of red and blue illumination from light emitting diode(LED)on the quality of seedlings.The results showed that seedlings growth was affected by LED red or blue illumination treatment,leading to the decreased quality of seedlings compared with CK(conventional fluorescent light).Total content of photosynthetic pigments decreased more under long-time LED blue illumination than under LED red illumination,while the contents of chlorophyll a and carotenoid maintained a higher level in treatment of LED red illumination.Further study showed that blue illumination treatment inhibited the root elongation,root length and plant height of rice seedlings,but increased the root number,stem thickness and dry matter accumulation,so the sound seedling index was superior to that of red illumination treatment.It implied that LED monochrome blue or red illumination would not meet the illumination requirement in factory production of raising rice seedlings.
Keywords：light emitting diode(LED)red and blue illuminationriceseedling quality
Publication Date：2014-10-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 6-10 )