Fine mapping of a gene for low-tiller number, Ltn, in japonica rice (Oryza sativa L.) variety Aikawa 1

被引：27

作者：

Fujita, Daisuke ^{[1
]}

Ebron, Leodegario A. ^{[1
]}

Araki, Etsuko ^{[2
]}

Kato, Hiroshi ^{[3
]}

Khush, Gurdev S. ^{[1
]}

Sheehy, John E. ^{[1
]}

Lafarge, Tanguy ^{[1
,4
]}

Fukuta, Yoshimichi ^{[5
]}

Kobayashi, Nobuya ^{[1
,5
]}

机构：

[1] Int Rice Res Inst, Manila, Philippines

[2] Natl Agr Res Ctr Western Reg, Hiroshima 7218514, Japan

[3] Natl Inst Crop Sci, Tsukuba, Ibaraki 3058518, Japan

[4] UPR AIVA, Ctr Cooperat Int Rech Agron Dev, TA 70 01, F-34398 Montpellier, France

[5] Japan Int Res Ctr Agr Sci, Tsukuba, Ibaraki 3058686, Japan

来源：

THEORETICAL AND APPLIED GENETICS | 2010年 / 120卷 / 06期

关键词：

QUANTITATIVE TRAIT LOCI; MUTANTS; MARKERS; STAGE; DWARF; QTLS; MAP;

D O I：

10.1007/s00122-009-1251-7

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Tillering is one of the most important agronomic traits related to grain production in rice (Oryza sativa L.). A japonica-type variety, Aikawa 1, is known to have low-tiller number. The detailed location of a low-tillering gene, Ltn, which has been localized on chromosome 8 in Aikawa 1, was confirmed by molecular mapping. Using BC5F2 individuals derived from a cross between IR64 and Aikawa 1, the low-tillering gene was mapped to an interval defined by SSR markers ssr5816-3 and A4765. This was designated as Ltn because there was no reported gene for tillering in the region of chromosome 8. Through high-resolution linkage analysis, the candidate region of Ltn was located between DNA markers ssr6049-23 and ind6049-1 corresponding to 38.6 kbp on the Nipponbare genome sequence. These DNA markers, which were tightly linked to Ltn, are useful for marker-assisted selection in breeding studies.

引用

页码：1233 / 1240

页数：8

共 25 条

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