Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations.

Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations. Research Abstract Details 

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Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations. Abstract Text:

Wei Chen,Yan Zhang,Xueping Liu,Baoyuan Chen,Jinxing Tu,Fu Tingdong,Wei Chen,Yan Zhang,Xueping Liu,Baoyuan Chen,Jinxing Tu,Fu Tingdong,Wei Chen,Yan Zhang,Xueping Liu,Baoyuan Chen,Jinxing Tu,Fu Tingdong,

The inheritance of yield-related traits in rapeseed (Brassica napus) is poorly understood, and the investigations on mapping of quantitative trait loci (QTL) for such traits are only few. QTL related to six traits were mapped which include plant height (PH), height of lowest primary effective branch (HPB), length of main inflorescence (LMI), silique length (SL), number of primary branches (FB) and silique density (SD). A set of 258 doubled haploid (DH) lines derivatives of a cross between a canola variety Quantum and a resynthesized B. napus line No.2127-17, and a fixed immortalized F(2) (designated as IF(2)) population generated by randomly permutated intermating of these DHs were investigated. A genetic linkage map was constructed using 208 SSR and 189 SRAP markers for the DH population. Phenotypic data were collected from three environments for the two populations. Using composite interval mapping analyses, 30 and 22 significant QTL were repeatedly detected across environments for the six traits in the DH and IF(2) populations, respectively. Twenty-nine QTL were common between the two populations. The directions of parental contribution for all common QTL were the same, showing a great potential for marker-assisted selection in improving these traits. Some chromosomal regions harbor QTL for multiple traits, which were consistent with significant phenotypic correlations observed among traits. The results provided a better understanding of the genetic factors controlling yield-related traits in rapeseed.

Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations. Publishing Authors By Initials

W Chen,Y Zhang,X Liu,B Chen,J Tu,F Tingdong,W Chen,Y Zhang,X Liu,B Chen,J Tu,F Tingdong,W Chen,Y Zhang,X Liu,B Chen,J Tu,F Tingdong,

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Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: TAG. Theoretical and applied genetics. Theoretisc

VOLUME: 115

Page Numbers: 849-58

Journal Abbreviation: Theor. Appl. Genet.

ISSN: 0040-5752

DAY: 31

MONTH: 07

YEAR: 2007

Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations. Information

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LANGUAGE: eng

NlmUniqueID: 145600

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Grant and Affiliation Information for Detection of QTL for six yield-related traits in oilseed rape (Brassica napus) using DH and immortalized F(2) populations.

AFFILIATION: National Key Laboratory of Crop Genetic Improvement, National Sub-center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, 430070, China.

Country: Germany

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MEDLINETA: Theor Appl Genet

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