eprintid: 8917
rev_number: 14
eprint_status: archive
userid: 1305
dir: disk0/00/00/89/17
datestamp: 2015-08-10 03:52:41
lastmod: 2017-09-07 09:58:23
status_changed: 2015-08-10 03:52:41
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Gemenet, D C
creators_name: Leiser, W L
creators_name: Zangre, R G
creators_name: Angarawai, I I
creators_name: Sanogo, M D
creators_name: Sy, O
creators_name: Thudi, M
creators_name: Hash, C T
creators_name: Haussmann, B I G
icrisatcreators_name: Thudi, M
icrisatcreators_name: Hash, C T
affiliation: Institute of Plant Breeding, Seed Science and Population Genetics, University of Hohenheim (Fruwirthstr)
affiliation: Kenya Agricultural and Livestock Research Organization (Nairobi)
affiliation: Institut de l’Environnement et de Recherches Agricoles (INERA) (Ouagadougou)
affiliation: ICRISAT (Niamey)
affiliation: Institut d’Economie Rurale (IER) (Cinzana)
affiliation: Institut Sénégalais de Recherches Agricoles (ISRA) (Bambey)
affiliation: ICRISAT (Patancheru)
country: Germany
country: Kenya
country: Burkina Faso
country: Niger
country: Mali
country: Senegal
country: India
title: Association analysis of low-phosphorus tolerance in West African pearl millet using DArT markers
ispublished: pub
subjects: S1.5.1
divisions: D4
crps: crp1.4
full_text_status: restricted
keywords: Low phosphorus availability; West Africa; Marker–trait association; DArT markers; Pearl millet
abstract: Pearl millet [Pennisetum glaucum (L.) R. Br.] is a food security crop in the harshest agricultural regions of the world. While low soil phosphorus (P) availability is a big constraint on its production, especially in West Africa (WA), information on genomic regions responsible for low-P tolerance in pearl millet is generally lacking. We present the first report on genetic polymorphisms underlying several plant P-related parameters, flowering time (FLO) and grain yield (GY) under P-limiting conditions based on 285 diversity array technology markers and 151 West African pearl millet inbred lines phenotyped in six environments in WA under both high-P and low-P conditions. Nine markers were significantly associated with P-related traits, nine markers were associated with FLO, whereas 13 markers were associated with GY each explaining between 5.5 and 15.9 % of the observed variation. Both constitutive and adaptive associations were observed for FLO and GY, with markers PgPb11603 and PgPb12954 being associated with the most stable effects on FLO and GY, respectively, across locations. There were a few shared polymorphisms between traits, especially P-efficiency-related traits and GY, implying possible colocation of genomic regions responsible for these traits. Our findings help bridge the gap between quantitative and molecular methods of studying complex traits like low-P tolerance in WA. However, validation of these markers is necessary to determine their potential applicability in marker-assisted selection programs targeting low-P environments, which are especially important in WA where resource-poor farmers are expected to be the hardest hit by the approaching global P crisis.
date: 2015-08
date_type: published
publication: Molecular Breeding
volume: 35
number: 171
publisher: Springer Netherlands
id_number: 10.1007/s11032-015-0361-y
refereed: TRUE
issn: 1380-3743
official_url: http://dx.doi.org/10.1007/s11032-015-0361-y
related_url_url: https://scholar.google.co.in/scholar?hl=en&q=Association+analysis+of+low-phosphorus+tolerance+in+West+African+pearl+millet+using+DArT+markers&btnG=
related_url_type: pub
citation:   Gemenet, D C and Leiser, W L and Zangre, R G and Angarawai, I I and Sanogo, M D and Sy, O and Thudi, M and Hash, C T and Haussmann, B I G  (2015) Association analysis of low-phosphorus tolerance in West African pearl millet using DArT markers.  Molecular Breeding, 35 (171).   ISSN 1380-3743     
document_url: http://oar.icrisat.org/8917/1/art%253A10.1007%252Fs11032-015-0361-y.pdf