Effect of Soil Temperature on Carbohydrate and Chlorophyll Contents in Freesia
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Published:
Oct 6, 2020
Keywords:
Freesia soil temperature sugar starch chlorophyll
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Abstract
The experiment was conducted to determine the effect of soil temperature on carbohydrates and chlorophyll contents of freesia. The experiment consisted of 2 treatments. In the first treatment, freesia was planted in bed without cooling pipes whereas plants in the second treatment were cultivated in bed lining with cooling pipes under soil surface to decrease soil temperature. It was found that the effect of soil temperature was not significantly different either on sugar contents in corms and spikes or on starch contents in corms and leaves. Control plants accumulated significantly higher levels of sugar and chlorophyll contents in the leaves. Starch content in spikes of low soil temperature treatment was significantly higher than control.
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References
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นภดล จรัสสัมฤทธิ์. 2536. ฮอร์โมนพืชและสารควบคุมการเจริญเติบโตของพืช. สหมิตรออฟเซท, กรุงเทพฯ. 124 น.
ฝ่ายส่งเสริมการเกษตรที่สูง. 2540. Freesia. ไม้ดอกบนที่สูง. กองส่งเสริมพืชสวน. กรุงเทพฯ. 109 น. Berghoef, J. and A. P.Zevenbergen. 1990. The effect of air and soil temperature on assimilate partitioning and flower bud initiation of freesia. Acta Hort. 266 : 169-176.
Choi, K. J., G, C. Chung, W. Y. Choi, K. P. Han and S. K. Choi. 1995. Effect of root zone temperatures on the mineral composition on xylem sap, photosynthetic activity and transpiration in cucumber plants. Acta Hort. 396 : 161-167.
Dubois, M., K. A. Gilles, J. K. Hamilton, P. A. Rebers and F. Smith. 1956. Colorimetric method for determination of sugars and related substances. Anal. Chem. 28 : 350-356.
JSPN. 1990. Experimental Methods in Plant Nutrition. (Japanese Society for Soil Science and Plant Nutrition, eds.) Kakuyu-sha, Tokyo. p. 204-217.
Ruamrungsri, S., S. Ruamrungsri, T. Ikarashi and T. Ohyama. 1999. Carbohydrate metabolism in Narcissus. J. of Hort. Sci. Biotech. 74 (3) : 395-400.
Skene, G. M. and G. H. Kerridge. 1976. Effect of root temperature on cytokinin activity in root exudate of Vitis vinifera L. Plant Physiol. 42 : 1,131-1,139.
Witham, F. H., D. F. Blaydes and R. M. Devlin. 1971. Experiments in Plant Physiology. D. van Nostrand Company, New York. 523 p.
Young, E., Y. Motomura and C. R. Unrath. 1987. Influence of root temperature during dormancy on respiration, carbohydrate, and growth resumption in apple and peach. J. Amer. Soc. Hort. Sci. 112 (3) : 514-519.
