Grain carbon isotope composition is a marker for allocation and harvest index in wheat.

ABSTRACT: The natural ¹³ C abundance (δ¹³ C) in plant leaves has been used for decades with great success in agronomy to monitor water-use efficiency and select modern cultivars adapted to dry conditions. However, in wheat, it is also important to find genotypes with high carbon allocation to spikes and grains, and thus with a high harvest index (HI) and/or low carbon losses via respiration. Finding isotope-based markers of carbon partitioning to grains would be extremely useful since isotope analyses are inexpensive and can be performed routinely at high throughput. Here, we took the advantage of a set of field trials made of more than 600 plots with several wheat cultivars and measured agronomic parameters as well as δ¹³ C values in leaves and grains. We find a lin

SUBMITTER: Domergue JB 

PROVIDER: S-EPMC9323493 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature