Received: 25-10-2013
Accepted: 26-12-2013
DOI:
Views
Downloads
How to Cite:
Effect of Drought Treatment on Photosynthesis and Dry Matter Accumulation in Some Sorghum Varieties (Sorghum bicolor(L.) Moench)
,
Tang Thi Hanh
2
,
Pham Van Cuong
3, 2
Keywords
Drought, dry matter accumulation, photosynthesis, sorghum
Abstract
A pot experiment was conducted in the green house in 2011 spring cropping season at Hanoi University of Agriculture to determine the effects of drought stress (-60 kPa) on photosynthetic rate and dry matter accumulation in vegetative stage of some sorghum cultivars (Sorghum bicolor (L.) Moench). Carbon exchange rate (CER), chlorophyll content, Fv/Fm value, leaf area and dry matter accumulation (DM) decreased in all sorghum varieties under the drought treatment. There were positive relationships between CER and stomatal conductance and between CER and transpiration rate. These relationships were closer in drought treatment than those in control. Among 10 sorghum varieties, CL88 showed the best recovery for CER. Besides, CL09 exhibited the highest value of DM, chlorophyll content and Fv/Fm at recovery stage.
References
Borrell, A.K. (2000). Does Maintaining Green Leaf Area in Sorghum Improve Yield underDrought? II. Dry Matter Production and Yield. Crop Sci. 40:1037-1048.
Phạm Văn Cường, Bùi Quang Tuấn, Nguyễn Xuân Trạch, Nguyễn Tuấn Chinh, Trần Quốc Việt. (2010). Mối quan hệ giữa năng suất sinh khối với một số chỉ tiêu sinh lý và nông học của các giống cao lương (Sorghum bicolor (L.) Moench) làm thức ăngia súc trong vụ đông. Tạp chí nông nghiệp và phát triển nông thôn, 152: 3-10.
Fazaeli H, Golmohhammadi HA, Almodares A, Mosharraf S, Shaei A. (2006). ”Comparing theperformance of sorghum silage with maize silage in feedlot calves”, Pakistan J. Biol. Sci. 9: 2450-2455.
Kidambi.S.P. (1990). Genetic Variation for Gas Exchange Rates in Grain Sorghum. Plant Physiol. 92: 1211-1214.
Masojidek, J. (1990). The Synergistic Effect of Drought and Light Stresses in Sorghum and Pearl Millet. Plant Physiol. 96:198-207.
Mustafa (2000). Comparison of Photosynthetic Water use Efficiency of Sweet Sorghum at Canopy and Leaf Scales. Turk J Agric For. 24: 519-525.
Peng, S. (1991). Leaf photosynthetic rate is correlated with biomass and grain production in grain sorghum lines. Photosynthesis Research. 28: 1-7.
Perry, S., Krieg D.R., and Hutmacher R.B. (1983). Photosynthetic rate control in cotton. Plant Physiol. 73: 662-665.
Rosenow D.T., Ejeta G., Clark L.E., Gibert M.L., Henzell R.G., Borrell A.K., Muchow R.C. (1996). Breeding for pre- and post-flowering drought stress resistance in sorghum. In: Rosenow DT, Yohe JM (eds) Proceedings of the international coference on genetic improvement of sorghum and pearl millet (Lubbock, TX, 22-27 September 1996), ICRISAT, Lubbock, India, pp 400-411.
Terbea M., Vranceanu A.V., Petcu E., Craiciu D.S. & Micut G. (1995). Physiological response of sunflower plants to drought. Romanian Agricultural Research 3: 61-67.
Vinita. J. (1998). Comparative effect of water, heat and light stresses on photosynthetic reactions in Sorghum bicolor (L.) Moench. Journal of Experimental Botany. 49 (327): 1715-1721.
Xie T. (2010). Photosynthetic Characteristics and Water Use Efficiency of Sweet Sorghum UnderDifferent Watering Regimes. Pak. J. Bot. 42 (6): 3981-3994.
Younis, M. E. (2000). Effects of Water Stress on Growth, Pigments and 14CO2 Assimilation in Three Sorghum Cultivars. J. Agronomy & Crop Science. 185: 73-82.
Zelitch, I.(1982). The close relationship between net photosynthesis and crop yield. Bioscience 32:796-802.