Reduction of OsFLW7 expression enhanced leaf area and grain production in rice
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摘要:
Increasing rice production is important to ensure food security in China [1].Exploring yield potential and identifying genes beneficial to yield are important goals in the modern rice breeding.Generally,controlling leaf morphology,increasing photosynthesis efficiency and modulating the "sink-source" relationship can promote the breeding of high-yield rice as well as other cereal crops [2-4].The morphology of the leaf includes length,width and degree of curl after its emergence from the meristem and is determined by the establishment of polarity along the adaxial-abaxial,ventral-dorsal and medial-lateral axes and regulated at genetic,hormonal and environmental levels [5,6].Rice leaf morphology varies widely among rice subspecies and cultivars.Quantitative trait loci (QTLs) affecting leaf shape commonly have pleiotropic effects on rice yield [7-9],which are more useful than mutant genes for studying the molecular mechanism of leaf shape regulation and their application to rice breeding.