Effect of head position and climatic conditions on seed yield of globe artichoke (Cynara cardunculus L. var. scolymus (L.) Fiori), cv. Imperial Star |
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| Institution: | 1. Medical College, Yan''an University, Yan''an City, Shanxi Province, China;2. Department of Spine Surgery, Xi''an Jiaotong University–Affiliated Honghui Hospital, Youyidong Road, Xi''an City, China;1. Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK;2. South Asian Clinical Toxicology Research Collaboration, Faculty of Medicine, University of Peradeniya, Kandy, Sri Lanka;3. University of Otago, Wellington, New Zealand;4. Department of Psychiatry, Faculty of Medicine, National University of Malaysia, Kuala Lumpur, Malaysia;5. Centre for Mental Health and Safety, University of Manchester, Academic Health Science Centre, Manchester, UK;6. National Institute for Health Research Greater Manchester Patient Safety Translational Research Centre, University of Manchester, Academic Health Science Centre, Manchester, UK;7. Greater Manchester Mental Health National Health Service Foundation Trust, Manchester, UK;1. Dept. of Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, USA;2. Department of Anthropology, Vanderbilt University, Nashville, TN 37235, USA;3. Escuela de Arqueologia, Universidad Austral de Chile, Puerto Montt, Chile;4. Academia Nacional de la Historia, Lima, Peru;5. Instituto de Geociências, Universidade de São Paulo, São Paulo, 05508-080, Brazil;1. Thermochemical Processes Unit, IMDEA Energy Institute, Avda. Ramón de La Sagra, 3, 28935, Móstoles, Madrid, Spain;2. Chemical and Environmental Engineering Group, Universidad Rey Juan Carlos, Tulipán s/n, 28933, Móstoles, Madrid, Spain;1. Department of Mathematics, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013 China;2. School of Computer Science and Technology, Xidian University, Xi’an, Shaanxi 710071 China |
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| Abstract: | The effect of head position on seed yield was studied on 56 at random taken plants grown in an open-air plot near Zaragoza (Spain) which contained around 150 ‘Imperial Star’ globe artichoke plants. When plants started bolting, primary heads were cut away to favour the development of the remaining heads. Flowering started by mid-May and finished at the end of June. During this period, the week in which flowering started was recorded for 77 secondary, 56 tertiary and 60 quaternary randomly chosen heads. During flowering and seed setting, rainfall and temperatures were recorded. Harvested seeds were classified into viable and non-viable for each of the 193 heads. No significant interaction was found between the week of flowering and head position (secondary, tertiary or quaternary). Seed yield was higher on quaternary and tertiary than on secondary heads. The best seed setting period, the first fortnight of June was associated with absence of rain. In all cases, seed yield was low. |
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