Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent.

ABSTRACT:

Background

Panicle architectural traits in rice (branching, rachis length, spikelet number) are established between panicle initiation and heading stages. They vary among genotypes and are prone to Genotype x Environment interactions. Together with panicle number, panicle architecture determines sink-based yield potential. Numerous studies analyzed genetic and environmental variation of plant morphology, but the plasticity of panicle structure is less well understood. This study addressed the response of rice panicle size and structure to limited light availability at plant level for near-isogenic lines (NILs) with IR64 or IRRI146 backgrounds, carrying the QTL qTSN4 (syn. SPIKE) for large panicles. Full light and shading in the greenhouse and two population densities in the field w

SUBMITTER: Adriani DE 

PROVIDER: S-EPMC4889964 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature