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Journal of Applied Sciences
  Year: 2006 | Volume: 6 | Issue: 9 | Page No.: 1939-1953
DOI: 10.3923/jas.2006.1939.1953
 
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Phenylpropanoid and Isopropanoid Enhance Tolerance to Increased Levels of UVA+B Radiation in Three Cultivars of Soybean (Glycine max) Seedlings

Amal A.H. SalehDina, Z. Abdel-Kader and Abdelghafar M. Abu-Elsaoud

Abstract:
The present study was carried out to investigate the effect of different ultraviolet radiation doses on the growth and UV-screening compounds of three cultivars of soybean (Glycine max L.) (Giza-22, Giza-35 and Giza-111). The seeds were grown in plastic pots equally filled with a mixture of pre-sieved sandy loam soil, beat-moss and vermiculite (2:1:1) for two weeks. The planted pots were divided into four groups and exposed to white light (1100 Lux) (control).2.4 and 12.8 kJ m-2 d-1 UVA+B radiation, respectively for 30 days and then harvested. The results indicated that increasing ultraviolet radiation doses significantly induced decrease in shoot biomass and leaf area in Giza-22 and Giza-35 cultivars. On the other hand, ultraviolet radiations significantly induced accumulation in the root biomass of soybean cultivar Giza-111. While, by increasing ultraviolet radiation, the plant height was significantly increased in the three studied cultivars. Increasing UVA+B radiation doses induced a significant increasing in Phenylalanine Ammonia Lyase (PAL) activity, total phenolic compounds UV-absorbing compounds, anthocyanins content and carotenoids in the three soybean cultivars under investigation. The data also showed that Giza-111 cultivar was most tolerant to UVA+B radiation followed by Giza-22, while Giza-35 was the most sensitive cultivar to enhanced UVA+B radiation.
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How to cite this article:

Amal A.H. SalehDina, Z. Abdel-Kader and Abdelghafar M. Abu-Elsaoud , 2006. Phenylpropanoid and Isopropanoid Enhance Tolerance to Increased Levels of UVA+B Radiation in Three Cultivars of Soybean (Glycine max) Seedlings. Journal of Applied Sciences, 6: 1939-1953.

DOI: 10.3923/jas.2006.1939.1953

URL: https://scialert.net/abstract/?doi=jas.2006.1939.1953

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