Influence of the Exposure of Unilateral Red Light on the Growth of Soybean Seedlings

doi:10.14088/j.cnki.issn0439-8114.2018.08.005

Abstract

Abstract: Soybean seedlings were cultivated in the light culture room, using unilateral red light and unilateral sunlight as light source. After a period of 30 days, the ecological indexes, including seedling height, fresh weight and dry weight of seedling were measured, and several physiological indexes such as soluble sugar content, chlorophyll content and protein content were also determined. The results showed that all the seedlings had the phenomenon of phototropism under exposure of unilateral red light or unilateral sunlight. The seedling height in the treated group of unilateral red light was significantly higher than in the treated group of unilateral sunlight. However, fresh weight and dry weight had no significant differences between two groups. The three physiological indexes had extremely significant differences between two groups. Soluble sugar content in unilateral sunlight treatment was 16 times higher than in the unilateral red light treatment. Protein content, chlorophyll a content, chlorophyll b content and chlorophyll（a+b） content in the unilateral red light treatment was 1.5 times, 1.14 times, 1.19 times and 1.16 times higher than in the unilateral sunlight treatment, respectively.

Key words: soybean[Giycine max（Linn.） Merrill], light quality, unilateral red light, physiological characteristic, growth characteristic

CLC Number:

S565.1

WANG Yang-xin, ZHANG You-zhi. Influence of the Exposure of Unilateral Red Light on the Growth of Soybean Seedlings[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(8): 20-24.

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