The superior nitrogen efficiency of winter oilseed rape (Brassica napus L.) hybrids is not related to delayed nitrogen starvation-induced leaf senescence

Koeslin-Findeklee, Fabian; Meyer, A. C.; Girke, Andreas; Beckmann, Katrin; Horst, Walter J.

doi:10.1007/s11104-014-2212-8

Cited by 31 publications

(36 citation statements)

References 35 publications

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“…Besides, late N remobilization may lead to greater N losses through a combination of leaf loss and a high N/C ratio in stems at harvest (Kaiser et al 1998;Baggs et al 2000). Hence, the superior N efficiency of hybrids compared to inbred lines, when studied under N limitation, is mainly related to nitrogen remobilization efficiency and not to delayed leaf senescence (Koeslin-Findeklee et al 2014). …”

Section: Following the Senescence Process In Rapeseedmentioning

confidence: 99%

“…Increasing the total amount of protein in the seeds may be another way to enhance the sink strength and the final nitrogen utilization efficiency of rapeseed. Several studies have shown that genotypes with high nitrogen utilization efficiency values are characterized by low relative seed protein content (Schulte auf 'm Erley et al 2011;Koeslin-Findeklee et al 2014). Schulte auf'm Erley et al (2011) showed that genotypes with lower seed N content accumulated more seed dry matter for a given amount of N accumulated, possibly because of a higher photosynthetic rate in the pods or a higher efficiency of oil production.…”

Section: Nitrogen Remobilization Efficiency In Rapeseedmentioning

confidence: 99%

“…Koeslin-Findeklee et al (2014) compared the NUE of 11 inbred lines and seven hybrids over 2 years in field experiments and demonstrated the superiority of hybrids for both nitrogen uptake efficiency and nitrogen utilization efficiency, resulting in higher overall N efficiency.…”

Section: Taking Advantage Of Heterosismentioning

confidence: 99%

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Nitrogen use efficiency in rapeseed. A review

Bouchet

Laperche

Bissuel-Bélaygue

et al. 2016

Agron. Sustain. Dev.

175

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Mineral nitrogen fertilization has improved crop yield over the last century but has also caused air and water pollution. Reduction of nitrogen inputs and maintaining high yields are therefore essential to ensure a more sustainable agriculture. Improving the nitrogen use efficiency (NUE) of crops is therefore needed. Rapeseed, Brassica napus, depends on nitrogen fertilization due to its low NUE, with the ratio of plant nitrogen content to nitrogen supplied often not exceeding 60 %. Here, we review the major phenotypic traits associated with NUE in B. napus, with special emphasis on winter oilseed rape. We discuss the genetic diversity available and potential breeding strategies. The major points are the following: (1) rapeseed seed yield elaboration is complex, with overlapping phases of nitrogen uptake and remobilization during the crop cycle; (2) traits related to nitrogen uptake, such as root length and the amount of nitrogen absorbed after flowering, and traits related to nitrogen remobilization, such as the "staygreen" phenotype, have been identified as possible levers to improve NUE in rapeseed; (3) a substantial body of studies investigating the genetic control of NUE traits have already published and potential candidate genes identified; and (4) rapeseed genetic diversity may be enriched by exploiting interpopulation genetic variation and the closely related gene pools of Brassica rapa and Brassica oleracea.

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Section: Following the Senescence Process In Rapeseedmentioning

confidence: 99%

Section: Nitrogen Remobilization Efficiency In Rapeseedmentioning

confidence: 99%

See 1 more Smart Citation

Nitrogen use efficiency in rapeseed. A review

Bouchet

Laperche

Bissuel-Bélaygue

et al. 2016

Agron. Sustain. Dev.

175

View full text Add to dashboard Cite

show abstract

“…The definition of NUE applied in this study is the yield produced per unit of added N (Dresbøll and Thorup-Kristensen 2014). NUE is already an important target for breeding research in many crops such as wheat (Cabrera-Bosquet et al 2007), barley (Anbessa et al 2009, Beatty et al 2010, rice (Wei et al 2012, Chen et al 2013, and oilseed rape (Koeslin-Findeklee et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the rate and frequency at which nitrogen is supplied and available to the plant has a severe impact on plant growth and yield (Moll et al 1982). Studies on genotypic differences of NUE and NUE-related related traits, in particular in short cycle crops, are often done using a single N application , Koeslin-Findeklee et al 2014. N is mostly applied just before sowing and the genotypic response for growth to the N application is assessed frequently during crop growth.…”

Section: Introductionmentioning

confidence: 99%