Response of Hordeum distichon cv. Igri (2-row) and H. hexastichon cv. Plaisant (6-row) winter barley to foliar applications of chlormequat |
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| Affiliation: | 1. Department of Agriculture and Horticulture, University of Nottingham, School of Agriculture, Sutton Bonington, Loughborough, Leicestershire LE12 5RD, Great Britain;2. Gleadthorpe Experimental Husbandry Farm, Meden Vale, Mansfield, Nottinghamshire, NG20 9DF, Great Britain;1. Microbial Biotechnology Laboratory, Department of Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour, 173101, India;2. Department of Genetics, Plant Breeding and Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour, 173101, India;3. Department of Microbiology, Akal College of Basic Sciences, Eternal University, Baru Sahib, India;1. Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, P.R.China;2. Laboratory of Plant Biotechnology and Physiology, University of Lomé, Lome 01 BP 1515, Togo;3. French Agricultural Research Center for International Development (CIRAD), Genetic Improvement and Adaptation of Mediterranean and Tropical Plants-UMR AGAP Institute, Montpellier F-34398, France;4. UMR AGAP Institute, University of Montpellier, CIRAD, French National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier F-34398, France;1. Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle Upon Tyne NE2 4HH, UK;2. School of Agriculture, Food & Rural Development, Nafferton Ecological Farming Group, Newcastle University, Nafferton Farm, Stocksfield, UK;3. Department of Sustainable Crop and Food Protection, Faculty of Agriculture, Food and Environmental Sciences, Universita Catollica del Sacro Cuore, I-29122 Piacenza, Italy;4. Benaki Phytopathological Institute (BPI), Athens, Greece;5. Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway;6. Department of Haematology, Oslo University Hospital, Oslo, Norway;7. Department of Functional and Organic Food, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences, Nowoursynowska 159c, 027-776 Warsaw, Poland;8. Centre for Organics Research, Southern Cross University, Military Rd., Lismore, NSW, Australia;1. Division of Crop Production, ICAR-National Rice Research Institute, Cuttack, 753006, Odisha, India;2. Department of Botany, Fakir Mohan University, Vyasa Vihar, Balasore, 756089, Odisha, India |
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| Abstract: | Two-row (cv. Igri) and six-row (cv. Plaisant) winter barley cultivars were incorporated into a field trial at Sutton Bonington (1984–1985) where the effects of chlormequat (CCC) applied at the three-leaf stage (main stem) and the onset of stem elongation were compared. CCC had no influence on lodging as the area cropped with ‘Igri’ completely lodged while no lodging occurred for the cultivar ‘Plaisant’.Neither CCC treatment nor cultivar influenced the rate, duration or pattern of biomass accumulation. CCC application in either the autumn or spring increased harvest index and thus grain yield for both genotypes. Mean grain mass linearly declined as ear population was increased by CCC application, with the number of grains per ear unchanged. A parabolic response of grain yield to the number of ears was inferred and an analysis was used to determine the optimum ear density. |
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