Identification, pyramid, and candidate gene of QTL for yield-related traits based on rice CSSLs in Xihui18 background.

Unlabelled: Chromosome segment substitution line (CSSL) is important for functional analysis and design breeding of target genes. Here, a novel rice CSSL-Z431 was identified from restorer line Xihui18 as recipient and Huhan3 as donor. Z431 contained six segments from Huhan3, with average substitution length of 2.

Analysis of QTL for Grain Size in a Rice Chromosome Segment Substitution Line Z1392 with Long Grains and Fine Mapping of qGL-6.

Background: Grain size affects not only rice yield but is also an important element in quality of appearance. However, the mechanism for inheritance of grain size is unclear.

Results: A rice chromosome segment substitution line Z1392, which harbors three substitution segments and produces grains of increased length, was identified.