Dormance des bourgeons apicaux du frêne (Fraxinus excelsior L.) : évaluation du pool des nucléosides triphosphates et éventail des températures actives sur le débourrement des bourgeons en période de dormance

Barnola, P.; Lavarenne, S.; Gendraud, M.; Jallut, Nicole

doi:10.1051/forest:19860304

Cited by 13 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relatively longer resting period of the seedlings from stored seed may be responsible for the reduction of their final shoot height. For many authors, growth inhibition is related to the metabolism regulation and to the mechanisms of transport of nutrient [5,11,12,43]. In Castanea sativa, the diffusion of the acid 5,5′ -dimethyloxazolidin 2,4-dione (DMO) and its accumulation in the meristematic zone of the apical bud favoured shoot elongation [43].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the effect of parental tree on the final shoot height appears to be dependent on the seed physiological status (fresh or stored). Even though there were small differences between parental trees in the case of fresh seeds, the variability in height among parental trees increased with the duration of seed storage ( 12 were large, they produced the shortest seedlings after 6 months of storage. For the final number of leaves, however, no significant differences were observed among parental trees as a consequence of a large variability within the population of seedlings originating from the each individual.…”

Section: Seedling Growth and Number Of Leavesmentioning

confidence: 99%

See 1 more Smart Citation

Effects of acorn storage duration and parental tree on emergence and physiological status of Cork oak (Quercus suber L.) seedlings

Merouani¹,

Branco²,

Almeida³

et al. 2001

Ann. For. Sci.

View full text Add to dashboard Cite

-This study was conducted to evaluate how parental trees and seed storage duration influenced subsequent seedling physiological status and growth. Seedling emergence rate was higher than 90% independently of the duration of seed storage or parental trees. Seed storage shortened significantly the time and increased the uniformity of seedling emergence. Consequently, the delayed seedling emergence from fresh seeds could be explained by epicotyl dormancy. Seed size varied with parental tree. Seedling growth rate was greatly affected by seed size, independently of storage treatment. Seedlings originating from large seeds (>5 g) had the fastest growth rates and seedlings from the smallest seeds (<4 g) had the slowest. Final shoot height, however, depended on the duration of seed storage. The seed size and the duration of storage had a great effect on the initial rate of leaf production, but did not affect the final number of leaves. Leaf chlorophyll concentration was reduced as the duration of seed storage increased but was independent of parental tree (i.e., seed size). Seedling biomass was positively related to seed size. The duration of seed storage reduced the shoot/root ratio, but no significant effect was observed among parental trees. The shoot/root value of seedlings from stored seed was about 1.5 and the one of seedlings from fresh seed was about 2. seed storage / seed size / seedling growth / shoot / root ratio / Quercus suber Résumé -Effet de l'arbre producteur et de la durée de conservation des glands sur l'état physiologique des plants de chêne liège (Quercus suber L.). Quel que soit l'âge des glands ou l'arbre producteur, l'émergence des plants est supérieure à 90 %. La durée et l'uniformité de l'émergence des plants sont significativement affectées par la conservation des glands ; par conséquent le retard dans l'émer-gence des plants issus des glands frais peut être expliqué par l'existence d'une dormance épicotylaire. La croissance des plants est rythmique : elle est caractérisée par une alternance de périodes d'allongement et de périodes de repos. Le rythme de croissance est fortement affecté par la taille des glands quel que soit leur âge. En effet, la croissance des plants issus des gros glands (>5 g) est plus rapide que celles des plants issus des petits glands (<4 g), mais la hauteur finale dépend de l'âge des glands. La taille des glands et leur conservation affectent fortement le rythme d'apparition des feuilles mais pas le nombre final. La concentration en chlorophylle des feuilles diminue chez les plants issus des glands conservés quel que soit l'arbre producteur. La biomasse des différentes parties du plant est réduite pour les petits glands conservés. La conservation des glands influe sur le rapport système aérien/système souterrain, mais aucun effet de l'arbre producteur n'est observé. Sa valeur est de 1,5 pour les plants issus des glands conservés et de 2 pour ceux issus des glands frais.conservation des glands / taille des glands / croissance des plants / rapport système aérien/...

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Seedling Growth and Number Of Leavesmentioning

confidence: 99%

Effects of acorn storage duration and parental tree on emergence and physiological status of Cork oak (Quercus suber L.) seedlings

Merouani¹,

Branco²,

Almeida³

et al. 2001

Ann. For. Sci.

View full text Add to dashboard Cite

show abstract

“…In Jerusalem artichoke tubers, Gendraud (1975) showed that the metabolic level of NTPs is a good dormancy marker; unlike a growing bud, a dormant bud is unable to use an exogenous supply of adenosine to increase the NTP content. This correlation permits the characterization of endodormancy in various tree species (Lavarenne et al 1982;Barnola et al 1986;Balandier et al 1993).…”

Section: Dormancy Is Observed In Many Plants In Temperate Zonesmentioning

confidence: 99%

Determination of the growth potential of strawberry plants (Fragaria × ananassa Duch.) by morphological and nucleotide measurements in relation to chilling

Robert¹,

Pétel²,

Risser³

et al. 1997

Can. J. Plant Sci.

View full text Add to dashboard Cite

Robert, F., Pétel, G., Risser, G. and Gendraud, M. 1997. Determination of the growth potential of strawberry plants (Fragaria × ananassa Duch.) by morphological and nucleotide measurements in relation to chilling. Can. J. Plant Sci. 77: 127-132. Early strawberry fruit production requires that non-dormant strawberry plants be covered during winter. Two methods wre used to study the breaking of dormancy of Elsanta strawberry plants following chilling at temperatures below 8°C. First, a morphological test using the petiole lengths of plants transferred from a nursery to a growth chamber was used. Second, the nucleotide contents before and after incubation of samples in an adenosine solution were measured by bioluminescence. The results show that these two methods can reveal changes in the growth potential of strawberry plants, and, therefore, the release from dormancy.Key words: Dormancy, strawberry plant, nucleotide, growth potential, Fragaria Robert, F., Pétel, G., Risser, G. et Gendraud, M. 1997. Détermination par des mesures morphologique et nuclétodique, du potentiel de croissance de fraisiers (Fragaria × ananassa Duch.) refroidis. Can. J. Plant Sci. 77: 127-132. La production forcée de fraises requiert de couvrir les fraisiers non dormants au cours de l'hiver. Deux méthodes ont été utilisées pour déterminer la levée de dormance de fraisiers de la variété Elsanta après exposition à des températures inférieures à 8°C. La première fut la mise au point d'un test morphologique par la mesure des longueurs de pétioles de fraisiers transférés d'une pépinière à une enceinte climatisée. La deuxième méthode consista en la mesure par bioluminescence des teneurs en nucléotides avant et après incubation d'échantillons sur adénosine. Les résultats montrent que ces deux méthodes permettent d'évaluer les changements du potentiel de croissance des fraisiers et ainsi la levée de la dormance.

show abstract

Growth and Development

2020

Plant Nucleotide Metabolism ‐ Biosynthesis, Degradation, and Alkaloid Formation

View full text Add to dashboard Cite

Dormance des bourgeons apicaux du frêne (Fraxinus excelsior L.) : évaluation du pool des nucléosides triphosphates et éventail des températures actives sur le débourrement des bourgeons en période de dormance

Cited by 13 publications

References 0 publications

Effects of acorn storage duration and parental tree on emergence and physiological status of Cork oak (Quercus suber L.) seedlings

Effects of acorn storage duration and parental tree on emergence and physiological status of Cork oak (Quercus suber L.) seedlings

Determination of the growth potential of strawberry plants (Fragaria × ananassa Duch.) by morphological and nucleotide measurements in relation to chilling

Growth and Development

Contact Info

Product

Resources

About