EVALUATING POTASSIUM-USE-EFFICIENT COTTON GENOTYPES USING DIFFERENT RANKING METHODS

Identification of cotton (Gossypium hirsutum L.) genotypes efficient in potassium (K) uptake and utilization, under K-deficient conditions represents a cost-effective and environmentally friendly approach for low-K-input agriculture. It would reduce the costly input of K-fertilizers and manage K resources in agro-ecosystems. We ranked 25 cotton genotypes for their K use efficiency under deficient and adequate K regimes in hydroponics, using two different methods. K deficiency generally reduced cotton growth; however, K-efficient genotypes accumulated more biomass due to higher K uptake. Genotype NIBGE-2 exhibited excellent adaptation potential in terms of high shoot dry weight under both K regimes and ranked as the only most desirable, “efficient-responsive” genotype. Genotype CIM-506 produced low shoot dry weight under low K condition and ranked as “non-efficient.” Genotype Desi okra produced low shoot dry weight at adequate K level and ranked as “non-responsive.” Genotype ranking using two different methods ensured the validity of results.

[1]  M. Arshad,et al.  Quantifying the Effect of Temperature on Ammonium Bicarbonate Diethylene Triamine Penta‐acetic Acid Extractable Potassium and Developing a Novel Correction Factor to Express the Data , 2008 .

[2]  Z. Rengel,et al.  Crops and genotypes differ in efficiency of potassium uptake and use. , 2008, Physiologia plantarum.

[3]  P. Heffer,et al.  Outlook for world fertilizer demand, supply, and supply/demand balance. , 2008 .

[4]  X. Tian,et al.  Differential Responses of Conventional and Bt-Transgenic Cotton to Potassium Deficiency , 2007 .

[5]  Christian Hermans,et al.  How do plants respond to nutrient shortage by biomass allocation? , 2006, Trends in plant science.

[6]  M. Alpaslan,et al.  Genotypic variation in phosphorus efficiency between wheat cultivars grown under greenhouse and field conditions , 2006 .

[7]  M. Ashraf,et al.  Dry matter accumulation and partitioning in cotton (Gossypium hirsutum L.) as influenced by potassium fertilization , 2006, Biology and Fertility of Soils.

[8]  M. R. Carter.  Mineral Nutrition of Plants: Principles and Perspectives, 2nd ed., Emanuel Epstein, Arnold J. Bloom. Sinauer Associates, Sunderland, MA, USA (2005), (399 pp.) ISBN 0 87893 172 4 , 2006 .

[9]  M. Arshad,et al.  Exploiting genotypic variation among fifteen maize genotypes of Pakistan for potassium uptake and use efficiency in solution culture , 2006 .

[10]  T. Broyer,et al.  Comparative chlorine requirements of different plant species , 1957, Plant and Soil.

[11]  Anoop Singh,et al.  Phosphorus uptake and use efficiency in different varieties of bread wheat (Triticum Aestivum L) , 2004 .

[12]  K. R. Reddy,et al.  Interactive Effects of Carbon Dioxide and Nitrogen Nutrition on Cotton Growth, Development, Yield, and Fiber Quality , 2004 .

[13]  M. Ashraf,et al.  Influence of Potassium Nutrition on Gas Exchange Characteristics and Water Relations in Cotton (Gossypium hirsutum L.) , 2004, Photosynthetica.

[14]  Wei Tang,et al.  On Potassium Deficiency in Cotton - Disorder, Cause and Tissue Diagnosis , 2004 .

[15]  Duli Zhao,et al.  Influence of Potassium Deficiency on Photosynthesis, Chlorophyll Content, and Chloroplast Ultrastructure of Cotton Plants , 2001, Photosynthetica.

[16]  W. H. Gabelman,et al.  Screening maize inbred lines for tolerance to low-P stress condition , 1992, Plant and Soil.

[17]  Julius-von-Sachs-Platz,et al.  Flows of elements , ions and abscisic acid in Ricinus communis and site of nitrate reduction under potassium limitation , 2002 .

[18]  N. Fageria,et al.  POTASSIUM-USE EFFICIENCY IN COMMON BEAN GENOTYPES , 2001 .

[19]  T. Mahmood,et al.  PHOSPHORUS NUTRITION OF COTTON CULTIVARS UNDER DEFICIENT AND ADEQUATE LEVELS IN SOLUTION CULTURE , 2001 .

[20]  W. Pettigrew,et al.  Dry matter production, nutrient uptake, and growth of cotton as affected by potassium fertilization , 1997 .

[21]  N. Ahmad,et al.  Fertilizers and their use in Pakistan: an extension guide. , 1996 .

[22]  H. Matsui,et al.  Accumulation of carbon and nitrogen compounds in sweet potato plants grown under deficiency of N, P, or K nutrients , 1995 .

[23]  K. Cassman,et al.  Root development of two cotton cultivars in relation to potassium uptake and plant growth in a vermiculitic soil , 1990 .

[24]  Dennis C. Bryant,et al.  Differential Response of Two Cotton Cultivars to Fertilizer and Soil Potassium , 1989 .

[25]  H. Marschner.  Mineral Nutrition of Higher Plants , 1988 .

[26]  M. Siddiqi,et al.  Utilization index: A modified approach to the estimation and comparison of nutrient utilization efficiency in plants , 1981 .

[27]  E. Epstein.  Mineral Nutrition of Plants: Principles and Perspectives , 1972 .