Effect of gamma irradiated sodium alginate on red amaranth (Amaranthus cruentus L.) as growth promoter |
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| Affiliation: | 1. College of Food Science and Technology, HuaZhong Agriculture University, Wuhan 430070, Hubei, China;2. Key Laboratory of Environment Correlative Dietology (HuaZhong Agricultural University), Ministry of Education, China;1. Institute of Plant Nutrition, Agricultural Resources and Environmental Science, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;1. Department of Engineering, Aarhus University, Gustav Wiedsvej 10C, DK-8000 Aarhus C, Denmark;2. Department of Biology, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;3. Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark;1. College of Food Science and Technology, Henan University of Technology, NO.100, Lianhua Street, Zhengzhou, 45001, PR China;2. Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China;1. College of Horticulture, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, 100193, China;2. Beijing LEILI Marine Bioindustry Inc, Beijing, 100091, China;3. Agricultural Institute of Haidian, Beijing, 100080, China |
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| Abstract: | In order to study the growth promotion behavior of sodium alginate (SA) on vegetable (red amaranth, Amaranthus cruentus L.), 3% aqueous solution of SA was irradiated by γ-radiation (Co-60) of various total doses (12.5–50.0 kGy) at a dose rate of 3.5 kGy/h. Viscosity of the irradiated SA was found to decrease with increase in the radiation dose. The average molecular weight was also decreased from 104 to 103 orders. Red amaranth was cultivated in 18 different individual plots and SA solution (150 ppm) was applied on red amaranth after 10 days of seedlings at every 6 days interval. The morphological characters of vegetables were studied randomly in different unit plots. The irradiated SA of 37.5 kGy at 150 ppm solution showed the best performance. Dry matter of red amaranth significantly increased at 37.5 kGy of irradiated alginate treatment which was about 50% higher than that of the untreated samples. The effect of SA on red amaranth was found significant increase; i.e. plant height (17.8%), root length (12.7%), number of leaf (5.4%) and maximum leaf area (2%) compared to that of the control vegetative plant production. |
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