QTLs for phosphorus deficiency tolerance detected in upland NERICA varieties. Issue 3 (19th April 2013)

• Record Type: Journal Article
• Authors: Koide, Yohei; Pariasca Tanaka, Juan; Rose, Terry; Fukuo, Ayumi; Konisho, Kunihiko; Yanagihara, Seiji; Fukuta, Yoshimichi; Wissuwa, Matthias; Yano, M.
• Is Part Of: Plant breeding. Volume 132:Issue 3(2013)
• Page Start: 259
• Page End: 265
• Publication Date: 2013-04-19
• Subjects: Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12052
• Languages: English
• ISSNs: 0179-9541

Abstract

<abstract abstract-type="main" xml:lang="en" id="pbr12052-abs-0001"> <title>Abstract</title> <p>Phosphorous (P) deficiency is a major yield limiting factor in rice (<italic>Oryza sativa</italic> L.) production. The interspecific New Rice for Africa (NERICA) varieties combine general stress tolerance from African cultivated rice (<italic>Oryza glaberrima</italic> Steud) with characteristics associated with high yield from <italic>O. sativa</italic>. However, little is known about their ability to tolerate P deficiency. Here, we examined the variation for tolerance to P deficiency among the 18 upland NERICAs and their parents in multi‐year field experiments. The good performance under P deficiency of the <italic>O. glaberrima</italic> parent CG 14 and some NERICAs suggested that these tolerant NERICAs contain loci associated with P deficiency tolerance inherited from CG 14. Additionally, four QTL clusters for P deficiency tolerance were detected on chromosomes 4, 6 and 11 using F₃ lines derived from the cross between the P deficiency tolerant variety NERICA10 and a Japonica‐type sensitive variety 'Hitomebore'. These QTLs represent the first step in identifying stress tolerance genes from <italic>O. glaberrima</italic> that could subsequently be used to enhance P deficiency tolerance in <italic>O. sativa</italic>.</p> </abstract>