Contribution of the grain size QTL GS3 to yield properties and physiological nitrogen-use efficiency in the large-grain rice cultivar 'Akita 63'.

ABSTRACT: The development of crop varieties with high nitrogen-use efficiency (NUE) is thought to be important in achieving sustainable cereal crop production. The high yield large-grain rice cultivar Oryza sativa L. 'Akita 63' (temperate japonica) has high physiological NUE (PNUE) for grain yield (GY). Our previous study revealed that a large-grain allele of GS3 is present in 'Akita 63'. Here, we verified the influence of GS3 on the yield properties and PNUE for GY in 'Akita 63'. The frequency distribution of brown rice length in F₂ crosses of 'Iwate 75' and 'Akita 63' showed a continuous distribution that could be explained by GS3. A near-isogenic line was developed to substitute the GS3 segment of 'Koshihikari', which harbours a normal-s

SUBMITTER: Obara M 

PROVIDER: S-EPMC9522531 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature