Tilki Fahrettin
Artvin Coruh University, Faculty of Forestry, 08000 Artvin, Turkey.
J Environ Biol. 2010 May;31(3):325-8.
This study was conducted to evaluate how acom size (small, medium and large) and acorn storage duration (0, 5 and 17 months) influenced Quercus petraea (Mattuschka) moisture content and germination. Acorn size and storage duration did not significantly affect acorn moisture content, but they significantly affected acorn germination performance. When averaged for three acorn sizes, loss of germination performance occurred after 17 months of storage even when the moisture content did not reduce significantly and remain at the initial level (32.6%). Maximum germination percentage was observed in large and medium size classes before storage (93 and 95%, respectively) and after 5-month storage (94 and 93%, respectively), but after 17-month storage medium acorn size class exhibited the highest germination (68%). Small seed size class exhibited the lowest germination percentage and rate in each acorn storage duration. Acorn size also significantly affected seedling emergence and survival in the nursery and seedling emergence and survival was the lowest in small seed size class (85 and 80%, respectively). Although seedling survival of one-year seedlings in the nursery increased up to large seed size class, maximum survival in nursery conditions was observed in large and medium size classes (89 and 91%, respectively). Thus, acorn size grading in Q. petraea may result in higher germination performance within in a seedbed.
本研究旨在评估橡子大小（小、中、大）和橡子储存时长（0、5和17个月）如何影响岩栎（Quercus petraea (Mattuschka)）的含水量和发芽情况。橡子大小和储存时长对橡子含水量没有显著影响，但对橡子发芽表现有显著影响。当对三种橡子大小进行平均计算时，即使含水量没有显著降低并保持在初始水平（32.6%），储存17个月后发芽表现仍出现下降。储存前，大粒和中粒橡子的发芽率最高（分别为93%和95%），储存5个月后（分别为94%和93%），但储存17个月后，中粒橡子的发芽率最高（68%）。在每个橡子储存时长中，小粒种子的发芽率和发芽速率最低。橡子大小对苗圃中的幼苗出土和存活也有显著影响，小粒种子的幼苗出土和存活最低（分别为85%和80%）。尽管苗圃中一年生幼苗的存活率随种子大小增加而提高，但在苗圃条件下，大粒和中粒种子的存活率最高（分别为89%和91%）。因此，对岩栎进行橡子大小分级可能会提高苗床内的发芽表现。
