Quantitative trait loci for phyllochron and tillering in rice

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
N MiyamotoK Nemoto

Abstract

Morphogenetic processes in sequentially growing leaves and tiller buds are highly synchronized in rice ( Oryza sativa L.). Consequently, the appearance of successive leaves in the main tiller acts as the "pacemaker" for the whole shoot system development. The time interval between the appearance of successive leaves (days/leaf) in the main tiller is called the 'phyllochron'. The objectives of the investigation reported here were: (1) to identify quantitative trait loci (QTLs) that control rice phyllochron and (2) to understand the roles of phyllochron QTLs as an underlying developmental factor for rice tillering. For this purpose we developed a set of recombinant inbred lines derived from a cross between IR36 ( indica) and Genjah Wangkal (tropical japonica). Composite interval mapping detected three phyllochron QTLs located on chromosomes 4, 10 and 11, where the presence of a Genjah Wangkal allele increased phyllochron. The largest QTL (on chromosome 4) was located on the genomic region syntenic to the vicinity of the maize Teopod 2 mutation, while the QTL on chromosome 10 was close to the rice plastochron 1 mutation. These three phyllochron QTLs failed to coincide with major tiller number QTLs. However, one tiller number QTL w...Continue Reading

References

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Citations

Feb 28, 2006·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Laura RossiniCarlo Pozzi
Jan 12, 2010·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Daisuke FujitaNobuya Kobayashi
Jul 14, 2011·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Y NaruokaJ D Sherman
May 25, 2010·Nature Genetics·Yongqing JiaoJiayang Li
Jan 15, 2009·The New Phytologist·Naoko YasunoKiyoaki Kato
Feb 7, 2017·Breeding Science·Md Nashir UddinYoshimichi Fukuta
Nov 5, 2014·American Journal of Botany·Roger D Meicenheimer
Aug 28, 2020·Frontiers in Plant Science·Md Nashir Uddin, Yoshimichi Fukuta

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