Interfamily variation in nitrogen productivity of <i>pinus sylvestris</i> seedlings

Jonsson, Alena; Ericsson, Tom; Eriksson, Gunilla; Kähr, Monika; Lundkvist, Kenneth; Norell, Lennart

doi:10.1080/02827589709355377

Cited by 13 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Franco (JOLY et al 1989) showed important F 9 N interactions but the F 9 W interaction had very little importance. Several authors found significant F 9 N interaction for other species like Pinus sylvestris (Jonsson et al 1997), Picea abies (L.) Karst. (Mari et al 2002), and Picea mariana (Mill.)…”

Section: Discussionmentioning

confidence: 97%

Juvenile–mature genetic correlations in Pinus radiata D. Don. under different nutrient × water regimes in Spain

2011

View full text Add to dashboard Cite

Individual and family heritabilities and juvenile-mature genetic correlations were estimated for growth and biomass traits recorded in treatment with optimal and limiting water and/or nutrient availability to study how the different growth environments affected genetic parameter estimates. Thirty open-pollinated families, randomly selected among the 58 families used in field progeny tests in Galicia, were cultivated for 30 weeks in a climatic chamber under controlled conditions. Two water regimes (high and low water supply) combined with two nutrient regimes (high and low nutrient supply) were applied by subirrigation. Several growth, branching and dry mass traits were assessed 30 weeks after sowing and compared with field performance (height, diameter and volume) of 4-year-old progeny tests established at three different sites in Galicia (NW Spain). Both the irrigation and the fertilization treatments had a strong effect in all the assessed traits except irrigation for the number of branches. Heritabilities for growth and biomass traits were moderate to high (0.13-0.77) in individual treatments. However, when analyzing all treatments together, the impact of the family 9 treatment interactions led to a reduction (0.20-0.35) in the heritability estimates. The results indicated that the genotype 9 water and genotype 9 nutrient interactions may be important and could not be ignored in the Galician radiata pine breeding program. Climatic chamber-field correlations were different between different traits measured at climatic chamber experiments and the three field tests. The correlations were larger with the wellwatered treatments, suggesting that further development of early testing methods for radiata pine in Galicia should include treatments with no limiting water availability.

show abstract

Section: Discussionmentioning

confidence: 97%

Juvenile–mature genetic correlations in Pinus radiata D. Don. under different nutrient × water regimes in Spain

2011

View full text Add to dashboard Cite

show abstract

“…Every second day during the periods of active growth the substrate was saturated with deionized water for 30 min. After 1 h of drainage, 2 ml of nutrient solution with the N amount according to a dose curve (Jonsson et al 1997) was pipetted into individual tubes. An autopipette with a side feed connected to a cylinder containing nutrient solution was used.…”

Section: Nutrient Treatmentmentioning

confidence: 99%

Genetic variation in nutrient utilization and growth traits in picea abies seedlings

Mari

Jansson

Jonsson

2003

Scandinavian Journal of Forest Research

Self Cite

View full text Add to dashboard Cite

Genetic variation in nitrogen (N) and phosphorus (P) utilization (amount of total biomass produced per unit nutrient in the needles) and growth traits in seedlings from 30 open-pollinated families of Picea abies (L.) Karst. was estimated. Seedlings were grown under two nutrient regimens: free access to nutrients and restricted access. There was a strong treatment effect on most growth traits. With free access, families allocated relatively more biomass to the stem and less to the roots than they did with restricted access. Heritabilities for growth traits were higher with free access treatment (0.33-0.81) than with restricted access treatment (0.20-0.45). Family variance components for N and P utilization were significant (p < 0.05) with restricted access but not with free access. Genetic correlation between nutrient utilization and height traits with restricted access ranged from none to moderate ( -0.31 to 0.56). Genetic correlations between the same trait assessed in the two treatments were strong for height and moderate for biomass.

show abstract

“…Following bud-set, however, black spruce seedlings usually exhibit a gradual decline in growth rate and physiological activity until dormancy requirements are met [1,10,29]. Consequently, nutrient supplementation during hardening should match this decline pattern [25] by following a reverse exponential function that synchronizes nutrient supply rate with growth rate. The objective of this study was to test late-season fertilization regimes on a commercial crop of black spruce seedlings utilizing declining delivery rates.…”

Section: Introductionmentioning

confidence: 99%

Late-season fertilization of Picea mariana seedlings under greenhouse culture: biomass and nutrient dynamics

2002

View full text Add to dashboard Cite

-Conventional nursery culture of containerized black spruce (Picea mariana Mill. B.S.P.) seedlings usually involves a lateseason interval, commonly called the "hardening period", when fertilization and water are withheld to promote frost-hardiness. Considerable growth may occur during this time which may lead to internal nutrient dilution, a condition often detrimental to subsequent field performance. Continued late season fertilization (at 6 or 12 mg N seedling -1 ) of seedlings during the hardening period was tested as a technique to prevent late season nutrient dilution and possibly to increase nutrient reserves. Root growth was increased much more than shoot growth during this period. Late-season fertilization raised N, P and K uptake as much as 164, 70 and 32% respectively, compared to conventionally fertilized seedlings with no late-season fertilization. Depending on dose rate and pre-hardening nutrient loading, this technique demonstrates the potential to build internal nutrient reserves in seedlings. Nutrient dilution was temporarily averted by lateseason fertilization suggesting that intensive and prolonged nutrient supplementation during the hardening period may further delay or eliminate nutrient dilution in seedlings.black spruce / hardening period / nitrogen / nutrient dilution / nutrient loading Résumé -Fertilisation en fin de saison des plants de Picea mariana cultivés en serre : dynamique de la biomasse et des éléments nutritifs. Dans les pépinières, l'élevage en container de plants de Picea mariana (Mill. B.S.P.) comporte normalement en fin de saison une phase appelée « période d'endurcissement » pendant laquelle fertilisation et arrosage sont supprimés pour améliorer la résistance au froid. La croissance, au cours de cette période, peut être importante d'où une dilution interne des éléments nutritifs affectant souvent les performances ultérieures sur le terrain. On a testé une technique consistant à prolonger la fertilisation pendant la période d'endurcissement (6 à 12 mg N par plant) pour éviter, en fin d'élevage, une dilution des éléments nutritifs, voire en augmenter la teneur. Pendant cette période, le gain de croissance du système racinaire a été plus élevé que celui des parties aériennes. Cette fertilisation en fin de saison se traduit par un prélèvement en N, P et K accru de respectivement 164, 70 et 32 % par rapport à celui observé avec le régime de fertilisation classique. Dépendant du régime de fertilité antérieur avant endurcissement et de la dose d'éléments nutritifs adoptée, cette technique dé-montre qu'il est possible d'agir sur la quantité de réserves en éléments des plants. Une fertilisation en fin de saison interrompt temporairement le processus de dilution des éléments. Ceci permet de penser que l'apport intensif et prolongé d'éléments pendant la période d'endurcissement peut retarder ou éviter la dilution en éléments des plants.Picea mariana / période d'endurcissement / azote / dilution des éléments nutritifs / changements nutritifs Ann. For. Sci. 59 (2002) [255][2...

show abstract

Interfamily variation in nitrogen productivity of pinus sylvestris seedlings

Cited by 13 publications

References 22 publications

Juvenile–mature genetic correlations in Pinus radiata D. Don. under different nutrient × water regimes in Spain

Juvenile–mature genetic correlations in Pinus radiata D. Don. under different nutrient × water regimes in Spain

Genetic variation in nutrient utilization and growth traits in picea abies seedlings

Late-season fertilization of Picea mariana seedlings under greenhouse culture: biomass and nutrient dynamics

Contact Info

Product

Resources

About