Allometry and Yield Stability of Cereals
| العنوان: | Allometry and Yield Stability of Cereals |
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| المؤلفون: | Yi-Min Zhao, Jacob Weiner, Feng-Min Li, Yan-Lei Du |
| المصدر: | Weiner, J, Du, Y-L, Zhao, Y-M & Li, F-M 2021, ' Allometry and Yield Stability of Cereals ', Frontiers in Plant Science, vol. 12, 681490 . https://doi.org/10.3389/fpls.2021.681490 Frontiers in Plant Science, Vol 12 (2021) Frontiers in Plant Science |
| بيانات النشر: | Frontiers Media SA, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Biomass (ecology), size dependency, Range (biology), Yield (finance), Stability (learning theory), Plant culture, Allometric model, breeding strategy, Plant Science, Biology, SB1-1110, appropriate technology, Crop, Agronomy, allocation, Perspective, Production (economics), smallholder farmers, Allometry, crop growth |
| الوصف: | Crop plants grow, and then, they allocate resources to different structures, including seeds and fruits, which represent yield in most crops. We define the yield stability of a genotype as its ability to reduce the effects of temporal variation in resources and conditions on yield production, and we argue that yield stability can be understood in terms of two processes: (1) crop survival and growth (biomass production): the ability of the crop plants to survive and produce biomass under the range of conditions to which it is exposed and (2) the pattern of allocation of this biomass to yield across this range of conditions. Plant breeders and crop physiologists have focused on (1), but much less attention has been paid to (2). We hypothesize that (2) is primarily the result of reproductive allometry: the quantitative relationship between vegetative and reproductive biomass. Ecological theory and the allometric models we present predict a tradeoff between (a) the ability of a genotype to produce yield over a wide variety of conditions and (b) its ability to produce very high yields under optimal or near-optimal conditions. We reanalyze the data from two recent studies, and the results are consistent with this hypothesis. Yield stability in crops corresponds to bet-hedging in evolutionary ecological theory. It is the most appropriate strategy for smallholder farmers in developing countries, a group that comprises most of the farmers in the world. Researchers and crop breeders need to rethink their objectives if they want to develop optimal varieties for these farmers. |
| وصف الملف: | application/pdf |
| تدمد: | 1664-462X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd9b4741f4ec8c58a84d51947fd7539a https://doi.org/10.3389/fpls.2021.681490 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....bd9b4741f4ec8c58a84d51947fd7539a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1664462X |
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