Mapping QTLs for nitrogen uptake in relation to the early growth of wheat (Triticum aestivum L.)

By D. An, Junying Su, Quanyou Liu, Yongguan Zhu, Y. Tong, Junming Li, R. Jing, Bin Li, Zhen-sheng Li. Plant and Soil, 2006

187 citations recorded by the source corpus.

The objective of this study was to map QTLs for N uptake (NUP) in wheat, and to investigate factors influencing NUP. Two independent field trials with low N (LN) and high N (HN) treatments were conducted in the growing seasons of 2002–2003 (trial 1) and 2003–2004 (trial 2) to measure NUP per plant (N accumulated in the aerial part at maturity stage) of a doubled haploid (DH) population consisting of 120 DH lines derived from winter wheat varieties Hanxuan 10 and Lumai 14. A hydroponic culture with all nutrients supplied sufficiently was conducted to investigate shoot dry weight (SDW), root dry weight (RDW), tiller number (TN) and NUP (total plant N uptake) per plant of this mapping population at seedling stage. SDW, RDW, TN and NUP investigated in the hydroponic culture were significantly and positively correlated with each other, and with NUP under both LN and HN conditions in the field trials. Nine and eight QTLs for NUP were detected under LN and HN conditions in the field trials, respectively. Four to five QTLs for SDW, RDW, TN and NUP were detected in the hydroponic culture. One SDW QTL, three RDW QTLs, two TN QTLs detected in the hydroponic culture were linked with QTLs for NUP under LN or HN condition in the field trials. The positive correlation and genetic linkage for the traits between the field trials and the hydroponic culture demonstrated that greater seedling vigor of root and shoot is an important factor influencing N uptake in wheat.

Subfields: Agronomy and Crop Science, Plant Science

View Paper: https://www.semanticscholar.org/paper/e25647de70bbc46f10237bd88994cd58df9c5b12

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In Agronomy and Crop Science

1. Fusuo Zhang
2. Jacques Le Gouis
3. B. Hirel

In Plant Science

1. Y. Moënne‐Loccoz
2. Fusuo Zhang
3. John Foulkes
4. Jacques Le Gouis
5. B. Hirel
6. F. Cormier
7. D. Gouache
8. Guohua Mi

Citations in the corpus

• The challenge of improving nitrogen use efficiency in crop plants: towards a more central role for genetic variability and quantitative genetics within integrated approaches. (2007, background): “In more recent studies performed on wheat double haploid lines (DHLs), direct selection under low N fertilization conditions was also proposed (Laperche et al., 2006) as well from a wide range of soil N availability (An et al., 2006).”
• Identification of quantitative trait locus of zinc and phosphorus density in wheat (Triticum aestivum L.) grain (2008, methodology): “The linkage map containing 395 marker loci and other details of the population information have been reported previously (An et al. 2006).”
• Mapping QTLs for root traits under different nitrate levels at the seedling stage in maize (Zea mays L.) (2008, background): “QTLs that associate with root traits have been studied in rice (Huang et al. 2004; Lian et al. 2005), and wheat ( An et al. 2006 ) under LN and HN conditions.”
• Breeding for increased nitrogen‐use efficiency: a review for wheat (T. aestivum L.) (2016, methodology): “…was used in association mapping studies on NUE-related traits (Table 4) mostly using biparental design such as doubled haploids (DH) populations (An et al. 2006, Laperche et al. 2006a,b, 2007, 2008, Habash et al. 2007, Fontaine et al. 2009, Li et al. 2010, Zheng et al. 2010, Bogard et al. 2011,…”