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Author Xu Q., Saito H., Hirose I., Katsura K., Yoshitake Y., Yokoo T., Tsukiyama T., Teraishi M., Tanisaka T., Okumoto Y.
Title The effects of the photoperiod-insensitive alleles, se13, hd1 and ghd7, on yield components in rice
Abstract:
flowering time is closely associated with grain yield in rice (Oryza sativa L.). In temperate regions, seasonal changes in day length (known as the photoperiod) are an important environmental cue for floral initiation. The timing of flowering is important not only for successful reproduction, but also for determining the ideal balance between vegetative growth and reproductive growth duration. Recent molecular genetics studies have revealed key flowering time genes responsible for photoperiod sensitivity. In this study, we investigated the effect of three recessive photoperiod-insensitive alleles, se13, hd1 and ghd7, on yield components in rice under Ehd1-deficient genetic background conditions to ensure vegetative growth of each line. We found that se13-bearing plants had fewer panicles, hd1-bearing plants showed decreased grain-filling percentage, and ghd7-bearing plants appeared to have fewer grains per panicle and fewer secondary branches. Our results indicate that the pleiotropic effects of photoperiod-insensitive genes on yield components are independent of short vegetative growth. This will provide critical information which can be used to create photoperiod-insensitive varieties that can be adapted to a wide range of latitudes.
Journal Molecular Breeding
Country Japan
Volume 33
Pages 813-819
Year 2014
PubMed ID 24659905
PubMed Central ID 3956932
DOI 10.1007/s11032-013-9994-x
URL -
Relation
Gene EF1 GHD7 SE1 SE13
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase