Breaking the nexus: more biomass in cereal grain

打破联系：谷物中的生物量增加

• 批准号: DP140102505
• 负责人: Prof Ian Godwin
• 金额: $ 42.72万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140102505
• 关键词: Breaking; nexus; more; biomass; cereal

Grain yield is controlled by complex, regulated genetic networks or quantitative trait loci (QTLs) derived from natural variations in many crop plants. Yield is a product of the three major parameters: panicle number, grain number and grain size, trade-offs are commonly observed between grain number and size. There is evidence to suggest it is possible to improve grain size without altering overall biomass. With the genomic and genetic resource tools at hand. This project will elucidate the genetic architecture of grain size, and manipulate the key loci to generate more biomass in the grain, minimising or eliminating the adverse impact on seed number. This will maximise harvestable yield without imposing increased demand for water and nutrients.

粮食产量是由复杂的、受调控的遗传网络或数量性状基因座(QTL)控制的，这些QTL来自许多作物的自然变异。产量是穗数、籽粒数和籽粒大小三个主要参数的乘积，通常在籽粒数和籽粒大小之间进行权衡。有证据表明，在不改变总生物量的情况下，改善颗粒大小是可能的。利用手头的基因组和遗传资源工具。该项目将阐明籽粒大小的遗传结构，并操纵关键基因座以在谷物中产生更多的生物量，最大限度地减少或消除对种子数量的不利影响。这将最大限度地提高可收获产量，而不会增加对水和养分的需求。