A 'wiring diagram' for sink strength traits impacting wheat yield potential.
A 'wiring diagram' for sink strength traits impacting wheat yield potential.
复制标题
水槽强度特质的“接线图”影响小麦产量潜力。
DOI：
10.1093/jxb/erac410
复制
发表时间：
2023-01-01
影响因子：
6.9
通讯作者：
中科院分区：
文献类型：
--
作者：
改良库强性状的鉴定是提高小麦产量的一个瓶颈。确定汇强度和产量潜力的相互作用过程进行了审查和可视化的一组“布线”，涵盖发展的关键阶段（并总结已知的潜在遗传学）。使用这个框架，我们回顾和组装的主要性状决定汇强度和确定的研究差距和潜在的假设进行测试，以实现收益汇强度。在开花前，可以通过以下方式增加谷粒数量：（i）与优化的小花发育和/或特定茎-节间长度的减少相关的穗生长增强，以及（ii）通过加速小花发育速率、改善穗之间的分配或优化穗细胞分裂素水平来改善结实效率。开花后，通过子房大小和/或胚乳细胞分裂和扩展来控制籽粒大小潜力，可以增加籽粒库强度。展望改善穗维管结构，以支持所有快速增长的小花，使同化物的流动改善，也进行了讨论。最后，我们考虑了与保绿性状的遗传变异以及茎碳水化合物再动员有关的提高粒重实现的前景。接线图为育种者和作物科学家提供了一个潜在的工作空间，以实现小麦和其他大田作物的产量增加。我们在开花前和开花后的关键时期使用一组“接线图”，回顾了决定小麦库强度的性状，这些性状与进一步提高产量潜力相关，并确定了有待研究的研究空白。
Identifying traits for improving sink strength is a bottleneck to increasing wheat yield. The interacting processes determining sink strength and yield potential are reviewed and visualized in a set of ‘wiring diagrams’, covering critical phases of development (and summarizing known underlying genetics). Using this framework, we reviewed and assembled the main traits determining sink strength and identified research gaps and potential hypotheses to be tested for achieving gains in sink strength. In pre-anthesis, grain number could be increased through: (i) enhanced spike growth associated with optimized floret development and/or a reduction in specific stem–internode lengths and (ii) improved fruiting efficiency through an accelerated rate of floret development, improved partitioning between spikes, or optimized spike cytokinin levels. In post-anthesis, grain, sink strength could be augmented through manipulation of grain size potential via ovary size and/or endosperm cell division and expansion. Prospects for improving spike vascular architecture to support all rapidly growing florets, enabling the improved flow of assimilate, are also discussed. Finally, we considered the prospects for enhancing grain weight realization in relation to genetic variation in stay-green traits as well as stem carbohydrate remobilization. The wiring diagrams provide a potential workspace for breeders and crop scientists to achieve yield gains in wheat and other field crops. Using a set of ‘wiring diagrams’ in critical pre- and post-anthesis periods, we reviewed traits determining wheat sink strength, relevant for further improving yield potential, identifying research gaps to be studied.
登录
查看更多内容
影响因子：
6.9
作者：
Borràs-Gelonch G;Rebetzke GJ;Richards RA;Romagosa I
通讯作者：
Romagosa I
DOI：
10.3390/plants10030533
发表时间：
2021-03-12
期刊：
Plants (Basel, Switzerland)
影响因子：
--
作者：
Basavaraddi PA;Savin R;Bencivenga S;Griffiths S;Slafer GA
通讯作者：
Slafer GA
影响因子：
7.4
作者：
Backhaus, Anna E.;Lister, Ashleigh;Tomkins, Melissa;Adamski, Nikolai M.;Simmonds, James;Macaulay, Iain;Morris, Richard J.;Haerty, Wilfried;Uauy, Cristobal
通讯作者：
Uauy, Cristobal
影响因子：
2.3
作者：
Abbate, PE;Andrade, FH;Marturano, F
通讯作者：
Marturano, F
在时间和基因上离散的小麦对高温的敏感性。
影响因子：
5.6
作者：
Barber HM;Lukac M;Simmonds J;Semenov MA;Gooding MJ
通讯作者：
Gooding MJ