Variation in nitrogen response among spring rape (Brassica napus) cultivars and its relationship to nitrogen uptake and utilization

Yau, S. K.; Thurling, N.

doi:10.1016/0378-4290(87)90004-9

Cited by 48 publications

(35 citation statements)

References 23 publications

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“…Some evidence of cultivar variation in nitrogen response has been indicated in field studies with B. napus and B. campestris (Bhatty 1964;Grami and La Croix 1977). However, the clearest indication of genotypic variation in nitrogen response was provided by studies with a wide range of B. napus cultivars in western Australia (Yau and Thurling 1987a). Cultivar differences were detected for yield under a limiting nitrogen supply and yield response to an increase in levels of applied nitrogen.…”

Section: Carbon/nitrogen Metabolismmentioning

confidence: 96%

Physiological Constraints and Their Genetic Manipulation

Thurling¹

1993

Monographs on Theoretical and Applied Genetics

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Section: Carbon/nitrogen Metabolismmentioning

confidence: 96%

Physiological Constraints and Their Genetic Manipulation

Thurling¹

1993

Monographs on Theoretical and Applied Genetics

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“…That study found that selection for high yields indirectly enhanced NUE and that hybrids were the most productive genotypes whatever the N nutrition conditions. Several studies have already explored the genetic diversity of N-related rapeseed traits under field and controlled conditions, in both spring (Yau and Thurling 1986;Rengel 2005, 2006;Balint et al 2008a) and winter cultivars (Schulte auf'm Erley et al 2007;Berry et al 2010;Schulte auf'm Erley et al 2011;Kessel et al 2012;Ulas et al 2013;Lee et al 2015). Combining the genetic diversity of the spring and winter gene pools by using backcrosses, for example, may be able to enrich genetic variation for NUE improvement.…”

Section: Nuementioning

confidence: 99%

Nitrogen use efficiency in rapeseed. A review

Bouchet

Laperche

Bissuel-Bélaygue

et al. 2016

Agron. Sustain. Dev.

179

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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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“…Genotypic differences in N efficiency in canola have been documented for two Canadian (Grami and La Croix 1977) and 40 Australian genotypes (Yau and Thurling 1987). In the study of 70 German canola genotypes, N harvest index was chosen as the most important assessment criterion (Kessel and Becker 1999).…”

Section: Resultsmentioning

confidence: 99%

“…Differences in P efficiency were demonstrated in wheat (Triticum aestivum) (Osborne and Rengel 2002) and maize (Zea mays) (Fageria and Baligar 1997). Differences in S efficiency in mustard (Brassica juncea) (Ahmad et al 2005) and N efficiency in canola (Brassica napus) (Yau and Thurling 1987;Kessel and Becker 1999;Svecnjak and Rengel 2006;Balint et al 2008) have also been found. Most of these authors reported that genotypic variations in utilization efficiency were more distinguishable under limited than under adequate nutrient supply.…”

Section: Introductionmentioning

confidence: 85%

“…Genotypic differences in N efficiency (based on dry weight and N accumulation in the above-ground plant parts) during vegetative stage and grain maturity of 40 Australian genotypes were recorded (Yau and Thurling 1987). More recently, the focus was on modern Australian germplasm, including 84 canola genotypes (Svecnjak and Rengel 2006;Balint et al 2008); however, all these studies concentrated on N efficiency during the vegetative stage.…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen efficiency of canola genotypes varies between vegetative stage and grain maturity

Balint

Rengel

2008

Euphytica

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There is no information on whether N efficiency in canola at maturity can be reliably determined by screening germplasm in the vegetative stage. Twelve canola genotypes identified in preliminary screening study as having either high or low N efficiency indices were tested for consistency in N efficiency between the vegetative stage and maturity. Plants were grown in a glasshouse under low or adequate N supply and N efficiency was assessed using the following criteria: dry weight at deficient N supply, relative yield at low vs. adequate N supply, and N utilisation efficiency. None of the 12 tested genotypes was classified as efficient or inefficient under all three criteria. One genotype (46C74) was classified as efficient under two criteria, and one genotype (Surpass 300 TT) was inefficient under two criteria. At maturity, three additional efficiency criteria were used: harvest index, N harvest index, and oil and protein concentration in seed. Two genotypes (Wesway and 46C74) (ranked as efficient at vegetative stage) remained efficient at maturity under most of the efficiency criteria used. On the other hand, genotype Surpass 603 CL ranked inefficient during the vegetative stage was ranked as efficient at maturity under two criteria. Overall, there was little consistency in the N efficiency ranking between vegetative stage and maturity in 12 tested genotypes. Screening canola germplasm for N efficiency for breeding purposes would therefore require an assessment at maturity.

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Variation in nitrogen response among spring rape (Brassica napus) cultivars and its relationship to nitrogen uptake and utilization

Cited by 48 publications

References 23 publications

Physiological Constraints and Their Genetic Manipulation

Physiological Constraints and Their Genetic Manipulation

Nitrogen use efficiency in rapeseed. A review

Nitrogen efficiency of canola genotypes varies between vegetative stage and grain maturity

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