期刊
JOURNAL OF PLANT NUTRITION
卷 34, 期 13, 页码 1957-1972出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01904167.2011.610483
关键词
Gossypium hirsutum; genotypic variation; K use efficiency; K uptake; K utilization; ranking methods
资金
- Higher Education Commission of Pakistan
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.
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