Fig 1.
Effect of 2-AP supplementation on accumulation of 2-AP concentrations (μl g-1) in grains of detached aromatic rice panicles in vitro.
Means in the same harvested stage by different lower case letters for the same variety differ significantly at P ≤ 0.05 by DMR test. Capped bars above means represent S.E. of three replicates.
Fig 2.
Effect of Zn supplementation on accumulation of 2-AP concentrations (μl g-1) in grains of detached aromatic rice panicles in vitro.
Means in the same harvested stage by different lower case letters for the same variety differ significantly at P ≤ 0.05 by DMR test. Capped bars above means represent S.E. of three replicates.
Table 1.
Effect of Zn supplementation on Zn and proline contents as well as ProDH activities in grains of detached aromatic rice panicles in vitro.
Fig 3.
Effect of La supplementation on accumulation of 2-AP concentrations (μl g-1) in grains of detached aromatic rice panicles in vitro.
Means in the same harvest stage with different lower case letters for the same variety differ significantly (P ≤ 0.05) according to the DMR test. Capped bars above the means represent the S.E. of three replicates.
Table 2.
Effect of La supplementation on ProDH activity (U g-1 FW) in grains of detached aromatic rice panicles in vitro.
Table 3.
Correlation analyses among different indices in three sets of experiments at 7 and 14 DAC of rice panicles in vitro.
Fig 4.
A theoretical illustration of 2-AP formation and transportation in aromatic rice plants.
Proline might be converted to 2-AP in the stem sheet and in leaves and grains before accumulating in grains, or proline might accumulate directly in the grains, where it is further converted into 2-AP through various biochemical pathways. Environmental factors, crop genotype, and crop management practices affect rice aroma.