Analysis of source and sink dynamics involved in oil and protein accumulation in sunflower achenes using a bi-linear model
| العنوان: | Analysis of source and sink dynamics involved in oil and protein accumulation in sunflower achenes using a bi-linear model |
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| المؤلفون: | Philippe Debaeke, Pierre Maury, Luc Champolivier, Fety Nambinina Andrianasolo |
| المساهمون: | AGroécologie, Innovations, teRritoires (AGIR), Institut National de la Recherche Agronomique (INRA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Terres Inovia |
| المصدر: | Field Crops Research Field Crops Research, Elsevier, 2017, 201, pp.200-209. ⟨10.1016/j.fcr.2016.10.020⟩ |
| بيانات النشر: | HAL CCSD, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, Achene, genotype, [SDV]Life Sciences [q-bio], Soil Science, chemistry.chemical_element, source-sink framework, 01 natural sciences, Sink (geography), receptacles, Human fertilization, Dry weight, seed composition, Helianthus annuus, 2. Zero hunger, geography, Source–sink dynamics, geography.geographical_feature_category, 04 agricultural and veterinary sciences, 15. Life on land, Nitrogen, Sunflower, remobilization, chemistry, Agronomy, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, management interaction, Agronomy and Crop Science, environment, 010606 plant biology & botany |
| الوصف: | Most recent mechanistic crop models are based on source-sink relationships. To build a conceptual framework for achene quality traits in sunflower (Helianthus annuus L.), source-sink relationships were investigated in contrasting environments. Two experiments were performed under field conditions in 2011 and 2012. Oil, protein, hull (sink), leaves, receptacles and stems (source) were measured weekly under contrasting nitrogen (N−: no fertilization; N+: 150 kg N per ha), plant density (3 and 4.5 plants per m2) and genotype (cv. Kerbel, cv. LG5451 HO and cv. Olledy) treatments. A bi-linear model was fitted to source and sink component dry weight (DW) dynamics per m2. Nitrogen and plant density influenced rates and duration of all source and sink dynamics, while genotype had a significant influence on timing parameters. More significant factor interactions were found in 2011 than in 2012, probably because of other factors that occurred or interacted during grain filling (water stress and/or thermal stress). We constructed a robust source-sink framework for oil and protein accumulation in relation to remobilization processes. The observed “source” chronology was receptacles, stems and green leaves, and we confirmed the “sink” chronology of receptacles, hulls, protein and oil. Chronologies were influenced mostly by genotype. Such a framework is highly useful for dynamic modeling of sunflower. We also discuss the relevance and adaptability of the bi-linear model. |
| اللغة: | English |
| تدمد: | 0378-4290 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55743f76d1d6eb6af3da197b97f61678Test https://hal.archives-ouvertes.fr/hal-01607508Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....55743f76d1d6eb6af3da197b97f61678 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03784290 |
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