NDLI: Genetic analysis and gene mapping ofleafy head (lhd), a mutant blocking the differentiation of rachis branches in rice (Oryza sativa L.)

Content Provider	Springer Nature Link
Author	Duan, Yuanlin Wu, Weiren Liu, Huaqing Zhang, Danfeng Zhou, Yuanchang Pan, Runsheng Lin, Lihui Chen, Zhiwei Guan, Huazhong Mao, Damei Li, Weiming Xue, Yongbiao
Copyright Year	2003
Abstract	A rice mutant calledleafy head (lhd), in which the differentiation of rachis branches is blocked, was identified in a doubled haploid (DH) population derived through F$_{1}$ anther culture from a cross between rice (Oryza sativa L.) indica cultivar Gui-630 and japonica cultivar Taiwanjing. The mutant is shorter in plant height, possessing smaller and clumpy leaves, and always stays at the vegetative growth stage. Genetic analysis suggests thatlhd is controlled by a single recessive gene, which is temporarily namedlhd(t). The phenotype of the mutant suggests thatLHD(t) is a key gene controlling the differentiation of rachis branches. In order to map the gene, two F$_{2}$ populations were constructed by crossing thelhd heterozygote with varieties Minghui-77 (indica) and Jinghua-8 (japonica). In the F$_{2}$ oflhd heterozygote × Jinghua-8, some mutant plants appeared as the “medium type”, suggesting that the lhd phenotype could be influenced by genetic backgrounds. With the published SSR markers of RM series and additional SSR markers developed by ourselves and using the methods of bulked segregant analysis (BSA) and mutant analysis (with 498 mutant plants in total),LHD(t) gene was mapped onto the distal region of the long arm of chromosome 10. Markers SSR1, RM269, RM258, RM304 and RM171 were located on one side with distances of 6.4, 16.6, 18.4, 22.2 and 26.3 cM toLHD(t); whereas markers SSR4 and SSR5 were on the other side with distances of 0.6 and 2.2 cM toLHD(t). The results will facilitate the positional cloning and functional study of theLHD(t) gene.
Starting Page	2201
Ending Page	2205
Page Count	5
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	48
Issue Number	20
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2003-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	Oryza sativa L. LHD(t) rachis differentiation SSR marker gene mapping Science Life Sciences Physics Chemistry/Food Science Earth Sciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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