Influence of acorn size on morphological characteristics of one-year-old Northern red oak (Quercus rubra L.) seedlings

Abstract

The aim of this research was to examine the influence of acorn size on morphological characteristics of one-year-old Northern red oak (Quercus rubra L.) seedlings. The quality of seedlings correlates with the quality of the seed they are derived from. In species with large seeds, as in the case of Northern red oak, the seedling growth in the first growing season is closely related to seed size or the amount of reserve nutrients that are stored in the seed. The height and root collar diameter of one-year-old Northern red oak seedlings increases with increase in acorn size. The results obtained in this research can be used as a guideline for acorn grading, because they show that improved Northern red oak seedlings quality can be achieved using seeds of appropriate size. [Projekat Ministarstva nauke Republike Srbije, br. TR 31070: The development of technological procedures in forestry with a view to an optimum forest cover realization]

Dormancy break, sprouting and later tuber reproduction in response to different tuber sizes of tiger nut (Cyperus esculentusL.)

“…Large variation in seed size is an important trait that may have consequences for growth and survival of seedlings, and in our case, the performance of tiger nut sprouts. In general, seedling size is positively correlated with seed size and mass [ 28 , 29 ].…”

“…Large variation in seed size is an important trait that may have consequences for growth and survival of seedlings, and in our case, the performance of tiger nut sprouts. In general, seedling size is positively correlated with seed size and mass [28,29]. The 35°C, −2°C and RT treatments increased sprouting in medium tubers of C. esculentus, while higher temperature treatment decreased sprouting and sprout growth markedly.…”

Vorschläge zur Optimierung/Verbesserung der genetischen Qualität von Saatgut aus Erntebeständen bei den Eichenarten (Quercus robur L. & Quercus petraea [Matt.] Lieb.)

“…Das Samengewicht ist daher besonders in den ersten Lebensjahren für das Wachstum der Pflanzen von besonderer Bedeutung (Eitingen, 1926;Rohmeder, 1972). Generell kann für die Eichen gesagt werden, dass größere und damit schwerere Eicheln größere Pflanzen hervorbringen (Baur, 1879;Burger, 1921;Cieslar, 1923;Jarvis, 1963;Long und Jones, 1996;Bonfil, 1998;Gomez, 2004;Navarro et al, 2006;González-Rodríguez et al, 2011;Popović et al, 2015). Im Saatbeet sind von den Prüfgliedern große, repräsentative und kleine Eicheln getrennt ausgesät worden.…”

“…Über die drei Größensortierungen der Eicheln zeigt sich, dass der WHD von der großen zur kleinen Sortierung abnimmt. Zum gleichen Ergebnis kommen auch die Untersuchungen anderer Autoren (Eitingen, 1926;Roth et al, 2011;Popović et al, 2015). Die Eichelgröße beeinflusst demzufolge nicht nur das Höhenwachstum, sondern auch die Sproßentwicklung des Sämlings (Aas, 1998).…”