Raising yield potential in wheat: Optimizing partitioning to grain while maintaining lodging resistance
| العنوان: | Raising yield potential in wheat: Optimizing partitioning to grain while maintaining lodging resistance |
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| المؤلفون: | Pete Berry, Daniel F. Calderini, William J. Davies, Simon Griffiths, Matthew P. Reynolds, Gustavo A. Slafer, Pierre Martre, Roger Sylvester-Bradley, M. John Foulkes |
| المساهمون: | Division of Plant and Crop Sciences, University of Nottingham, UK (UON), CREA (Catalonian Institution for Research and Advanced Studies) and Departament of Crop and Forest Sciences, Universitat de Lleida, Department of Biological Sciences [Lancaster], Lancaster University, High Mowthorpe, Agricultural Development and Advisory Service, Boxworth, Génétique Diversité et Ecophysiologie des Céréales (GDEC), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Plant Production and Plant Protection Institute, Universidad Austral de Chile, Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de la Recherche Agronomique (INRA) |
| المصدر: | Journal of Experimental Botany Journal of Experimental Botany, Oxford University Press (OUP), 2010, 62 (2), pp.469-486. ⟨10.1093/jxb/erq300⟩ |
| بيانات النشر: | HAL CCSD, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | 0106 biological sciences, QUANTITATIVE TRAIT LOCUS, Physiology, Yield (finance), GENETIC-RESOURCES, Quantitative Trait Loci, WHEAT, Plant Science, engineering.material, Biology, Breeding, 01 natural sciences, MARKER ASSISTED SELECTION, GENE-DISCOVERY, PHENOLOGY, Poaceae, Photosynthesis, Triticum, 2. Zero hunger, Food security, DRY MASS PARTITIONING, Resistance (ecology), business.industry, ALIEN INTROGRESSION, Reproduction, SPIKE-FERTILITY, food and beverages, 04 agricultural and veterinary sciences, 15. Life on land, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, Photosynthetic capacity, CROP BREEDING, GRAIN WEIGHT, Agronomy, GRAIN SIZE, LODGING RESISTANCE, 040103 agronomy & agriculture, engineering, Food processing, 0401 agriculture, forestry, and fisheries, Spike (software development), Fertilizer, business, 010606 plant biology & botany |
| الوصف: | A substantial increase in grain yield potential is required, along with better use of water and fertilizer, to ensure food security and environmental protection in future decades. For improvements in photosynthetic capacity to result in additional wheat yield, extra assimilates must be partitioned to developing spikes and grains and/or potential grain weight increased to accommodate the extra assimilates. At the same time, improvement in dry matter partitioning to spikes should ensure that it does not increase stem or root lodging. It is therefore crucial that improvements in structural and reproductive aspects of growth accompany increases in photosynthesis to enhance the net agronomic benefits of genetic modifications. In this article, six complementary approaches are proposed, namely: (i) optimizing developmental pattern to maximize spike fertility and grain number, (ii) optimizing spike growth to maximize grain number and dry matter harvest index, (iii) improving spike fertility through desensitizing floret abortion to environmental cues, (iv) improving potential grain size and grain filling, and (v) improving lodging resistance. Since many of the traits tackled in these approaches interact strongly, an integrative modelling approach is also proposed, to (vi) identify any trade-offs between key traits, hence to define target ideotypes in quantitative terms. The potential for genetic dissection of key traits via quantitative trait loci analysis is discussed for the efficient deployment of existing variation in breeding programmes. These proposals should maximize returns in food production from investments in increased crop biomass by increasing spike fertility, grain number per unit area and harvest index whilst optimizing the trade-offs with potential grain weight and lodging resistance. |
| اللغة: | English |
| تدمد: | 0022-0957 1460-2431 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3923ae307ef29857b29a00524b29e9aTest https://hal.archives-ouvertes.fr/hal-00964196Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e3923ae307ef29857b29a00524b29e9a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00220957 14602431 |
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