M. B. Sokoto, A. Muhammad
4. Conclusion
The water stress applied after tillering initiation stage is more effective on grain yield and the other characters.
FARO 44 exhibited better water stress tolerance and this variety proved the promising cultivar under water stress
conditions or water limiting area.
References
[1] Khush, G.S. (2005) What It Will Take to Feed 5.0 Billion Rice Consumers in 2030. Plant Molecular Biology, 59, 1-6.
http://dx.doi.org/10.1007/s11103-005-2159-5
[2] Bergez, J.E. and Nol leau, S. (2003 ) Maize Grain Yield Variability between Irrigation Stands: A Theoretical Study. Ag-
ricultural Water Management, 60, 43-57. http://dx.doi.org/10.1016/S0378-3774(02)00152-X
[3] Qadir, M. and Oster, J.D. (2004) Crop and Irrigation Management Strategies for Salinesodic Soils and Waters Aimed
at Environmentally Sustainable Agriculture. Science of the Total Environment, 323, 1-19.
http://dx.doi.org/10.1016/j.scitotenv.2003.10.012
[4] Zwart, S.J. and Bastiaanssen, W.G.M. (2004) Review of Measured Crop Water Productivity Values for Irrigated Wheat,
Rice, Cotton and Maize. Agricultural Water Management, 69, 115-133. http://dx.doi.org/10.1016/j.agwat.2004.04.007
[5] Farooq, M., Wahid , A. , Kobayash i, N., Fujita, D. and Basra, S.M.A. (2008) Plan t Drought Stress: Effects, Mechanisms
and Management. Agronomy for k Mechanisms and Management. Agronomy for Sustainable Development, 1-28.
[6] Department of Agriculture (2006) Government of Sri Lanka (DOASL), All Rights Reserved-Developed in Association
with ICTA.
[7] Adejare, F.B. and Unebesse, C.E. (2008 ) Water Stress Induces Cultivar Department Changes in Stomatal Complex,
Yield and Osmotic Adjustments in Glyche Max L. International Journal of Agricultural Research, 3, 287 -295.
http://dx.doi.org/10.3923/ijar.2008.287.295
[8] IRRI (1973) Water Management in Philippines Irrigation Systems—Water Stress Effects in Flooded Tropical Rice.
Los Baños, Philippines.
[9] Jana, R.K. and Ghildyal, B.P. (1971) Effect of Varying Soil Water Regimes during Different Growth Phases on the
Yield of Rice under Different Atmospheric Evaporative Demands. Il Riso Anno, xx, 31-37.
[10] Bahattacharjee, D.P., Krishn ayya, G.R. and Ghosh, A.K. (1973) Analyses of Yield Components Andproductive Effi-
ciency of Rice Varieties under Soilmoisture Deficit. Indian Journal of Agronomy, 16, 314-343.
[11] De Datta, S.K., Abilay, W.P. and Kal war (1973) Water Stress Effect on Flooded Tropical Rice. Water Management in
Philippines Irrigation System Research and Operation, 16-36.
[12] Tantawi, B.A. and Ghanem, S.A. (2001) Water Use Efficiency in Rice Culture. Agricultural Research Center, Giza
(Egypt). CIHM-Optin Mediter raneennes, 40, 39-45.
[13] Rahman, M.T., Islam, M.T. and Islam, M.O. (2002) Effect of Water Stress at Different Growth Stages on Yield and
Yield Contributing Characters of Transplanted Aman Rice. Pakistan Journal of Biological Sciences, 5, 169-172.
http://dx.doi.org/10.3923/pjbs.2002.169.172
[14] Tuong, T.P., Bouman, B.A.M. and Mortimer, M. (2005) More Rice, Less Water-Integrated Approaches for Increasing
Water Productivity in Irrigated Rice-BasedSystems in Asia. Plant Production Science, 8, 229-239.
http://dx.doi.org/10.1626/pps.8.231
[15] P ramanik, S. and Grupta, S. (1 989) Screening Advanced Breeding Lines and Germplasme for Drought Resistance un-
der Uplandconditions. International Rice Research Newsletter, 14 , 20.
[16] Singh U.P. and Sing, K. (1980) IR5178-1-1-4 an Outstanding Drought Tolerant Line. International Rice Research
Newsletter , 5, 9.
[17] Sharma, K.D., Pannu, R.K., Tyagi, P.K., Chaudhary, B.D. and Sin gh , D.P. (2003) Effect of Moisture Stress on Plant
Water Relations and Yield of Different Wheat Genotypes. Indian Journal of Plant Physiology, 8, 99-102.
[18] Shani, U. and Dud ley, L.M. (2001) Field Studies of Crop Response to Water and Salt Stress. Soil Science. Society of
America Journal, 65, 1522-1528 . http://dx.doi.org/10.2136/sssaj2001.6551522x
[19] Boonjung, H. and Fukai, S. (1996) Effects of Soil Water Deficit at Different Growth Stages on Rice Growth and Yield
Under Upland Conditions. Field Crops Research, 48, 47-55. http://dx.doi.org/10.1016/0378-4290(96)00039-1