Wheat genotypes differ in potassium efficiency under glasshouse and field conditions
P. M. Damon A B and Z. Rengel AA Faculty of Natural and Agricultural Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
B Corresponding author. Email: paul.damon@uwa.edu.au
Australian Journal of Agricultural Research 58(8) 816-825 https://doi.org/10.1071/AR06402
Submitted: 15 December 2006 Accepted: 7 May 2007 Published: 30 August 2007
Abstract
A novel approach to the sustainable management of potassium (K) resources in agro-ecosystems is through better exploitation of genetic differences in the K efficiency of crop plants. Potassium efficiency is a measure of genotypic tolerance to soils with low potassium availability and can be quantified as the K efficiency ratio (the ratio of growth at deficient and adequate K supply). This study investigated the magnitude of variation in K efficiency among wheat (Triticum aestivum L.) genotypes grown in a glasshouse and in the field.
Genotypes differed significantly in response to low soil K availability in terms of shoot biomass during the vegetative growth phase and grain yield at maturity under glasshouse (144 genotypes) and field (89 genotypes) conditions. K-efficient and K-inefficient genotypes were identified. The main factor determining K efficiency for grain yield was the capacity of genotypes to maintain a high harvest index (grain yield/total shoot weight) at deficient K supply. Genotypes that had reduced harvest index under deficient K supply were K-inefficient. Capacity to tolerate low concentrations of K in shoot tissue where K supply was deficient was also important in determining K efficiency for grain yield. Potassium-efficient genotypes have the potential to enhance the productivity and sustainability of cereal cropping systems.
Additional keywords: cereal crops, low-input agriculture, nutrient efficiency, potash.
Acknowledgments
We thank R. Hunter and N. Venn, Department of Agriculture and Food, Western Australia, and L. Osborne, The University of Western Australia, for providing the seed used in these experiments. L. Hodgson, M. Blair, and A. Northover, The University of Western Australia, helped manage the field and glasshouse experiments. This research was funded by the Grains Research and Development Corporation, Australia (Project No: UWA00031).
Anderson WK,
French RJ, Seymour M
(1992) Yield responses of wheat and other crops to agronomic practices on duplex soils compared with other soils in Western Australia. Australian Journal of Experimental Agriculture 32, 963–970.
| Crossref | GoogleScholarGoogle Scholar |
Brennan RF,
Bolland MDA, Bowden JW
(2004) Potassium deficiency, and molybdenum deficiency and aluminium toxicity due to soil acidification, have become problems for cropping sandy soils in south-western Australia. Australian Journal of Experimental Agriculture 44, 1031–1039.
| Crossref | GoogleScholarGoogle Scholar |
Cakmak I
(2005) The role of potassium in alleviating the effects of abiotic stresses in plants. Journal of Plant Nutrition and Soil Science 168, 521–530.
| Crossref | GoogleScholarGoogle Scholar |
Chen JJ, Gabelman WH
(1995) Isolation of tomato strains varying in potassium acquisition using a sand-zeolite culture system. Plant and Soil 104, 183–190.
Colwell JD
(1963) The estimation of the phosphorus fertilizer requirements of wheat in southern New South Wales by soil analysis. Australian Journal of Experimental Agriculture and Animal Husbandry 3, 190–197.
| Crossref | GoogleScholarGoogle Scholar |
Colwell JD, Esdail RJ
(1968) The calibration, interpretation, and evaluation of tests for the phosphorus fertilizer requirements of wheat in northern New South Wales. Australian Journal of Soil Research 6, 105–120.
| Crossref | GoogleScholarGoogle Scholar |
Damon PM,
Osborne LD, Rengel Z
(2007) Canola genotypes differ in potassium efficiency during vegetative growth. Euphytica (In press) ,
Gerloff GC
(1987) Intact-plant screening for tolerance of nutrient deficiency stress. Plant and Soil 99, 3–16.
| Crossref | GoogleScholarGoogle Scholar |
Glass ADM, Perley JE
(1980) Varietal differences in potassium uptake by barley Hordeum vulgare. Plant Physiology 65, 160–164.
| PubMed |
Guoping Z,
Jingxing C, Tirore A
(1999) Genotypic variation for potassium uptake and utilization efficiency in wheat. Nutrient Cycling in Agroecosystems 54, 41–48.
| Crossref | GoogleScholarGoogle Scholar |
Jensen P, Petterson S
(1980) Varietal variation in uptake and utilization of potassium (rubidium) in high salt seedlings of barley. Physiologia Plantarum 48, 411–415.
| Crossref | GoogleScholarGoogle Scholar |
Leach BJ
(1981) Potassium deficiency with continuous cropping of wheat on sandplain soils. Our Land 13, 11–14.
Pal Y,
Gilkes RJ, Wong MTF
(2001) Soil factors affecting the availability of potassium to plants for Western Australian soils: a glasshouse study. Australian Journal of Soil Research 39, 611–625.
| Crossref | GoogleScholarGoogle Scholar |
Rengel Z, Graham RD
(1995) Wheat genotypes differ in Zn efficiency when grown in chelate-buffered nutrient solution. I. Growth. Plant and Soil 176, 307–316.
| Crossref | GoogleScholarGoogle Scholar |
Sale PWG, Campbell LC
(1987) Differential response to K deficiency among soybean cultivars. Plant and Soil 104, 183–190.
| Crossref | GoogleScholarGoogle Scholar |
Sattelmacher B,
Horst W, Becker HC
(1994) Factors that contribute to genetic variation for nutrient efficiency of crop plants. Zeitschrift für Pflanzenernaehrung und Bodenkunde 157, 215–224.
| Crossref | GoogleScholarGoogle Scholar |
Shea PE,
Gerloff GC, Gabelman WH
(1968) Differing efficiencies of potassium utilization in strains of snapbeans, Phaseolus vulgaris L. Plant and Soil 28, 337–346.
| Crossref | GoogleScholarGoogle Scholar |
Tennant D,
Scholz JD, Purdie B
(1992) Physical and chemical characteristics of duplex soils and their distribution in the south-west of Western Australia. Australian Journal of Experimental Agriculture 32, 827–843.
| Crossref | GoogleScholarGoogle Scholar |
Walkley A, Black IA
(1934) An examination of the Degtjareffe method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Science 37, 29–38.
| Crossref |
Woodend JJ, Glass ADM
(1993) Genotype-environment interaction and correlation between vegetative and grain production measures of potassium use-efficiency in wheat (T. aestivum L.) grown under potassium stress. Plant and Soil 151, 39–44.
| Crossref | GoogleScholarGoogle Scholar |
Yang XE,
Liu JX,
Wang WM,
Ye ZQ, Luo AC
(2004) Potassium internal use efficiency relative to growth vigour, potassium distribution and carbohydrate allocation in rice genotypes. Journal of Plant Nutrition 27, 837–852.
| Crossref | GoogleScholarGoogle Scholar |
Zadok CJ,
Chang TT, Konzak CF
(1974) A decimal code for the growth stages of cereals. Weed Science 14, 415–421.