Finding the superior allele of japonica-type for increasing stem lodging resistance in indica rice varieties using chromosome segment substitution lines.

ABSTRACT: BACKGROUND:In cereal crops, stem lodging can be classified into two types: stem-breaking type and stem-bending type. To improve stem-lodging resistance, the strong culm traits of superior lodging-resistant varieties must be characterized. The identification of quantitative trait loci (QTLs) and the corresponding genes associated with the parameters for bending moment at breaking (M) and flexural rigidity (FR) is expected to enable the efficient development of lodging-resistant varieties. A set of Chromosome Segment Substitution Lines (CSSLs) derived from the cross between Takanari and Koshihikari were used in this study to identify QTLs associated with lodging resistance. RESULTS:The indica variety Takanari possesses large M due to its large section modulus (SM) despite its small bending s

SUBMITTER: Mulsanti IW 

PROVIDER: S-EPMC5906422 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature