Changes in the viability and optimal moisture content of beech (Fagus crenata BL.) seeds during 10 years of cold storage

被引：0
作者：
Nagasaka A. [1 ]
Koyama H. [2 ]
Abe T. [3 ]
Nagasaka Y. [1 ]
Kon H. [1 ]
Yasaka M. [1 ]
Terazawa K. [1 ]
Onodera K. [1 ]
机构：
[1] Hokkaido Forestry Research Institute, Higashi-yama Kosyunai
[2] Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555
[3] Hokkaido Forestry Research Institute Dounan Branch Station, Hakodate 041-0801
来源：
Nihon Ringakkai Shi/Journal of the Japanese Forestry Society | 2010年 / 92卷 / 01期
关键词：
Fagus crenata; Germination; Moisture content; Seed storage at sub-zero temperatures;
D O I：
10.4005/jjfs.92.50
中图分类号：
学科分类号：
摘要：
The germination capacity of stored seeds of Fagus crenata was tested to identify long-term (5+ years) storage conditions. Seeds with three different moisture levels (moisture content [MC] of 11.3, 6.1, and 4.0%) were stored at-20°C. The percentage germination of seeds with 11.3% MC decreased after 4 years and reached zero after 6 years. Seeds with 4.0% MC maintained their germination capacity for at least 4 years, and seeds with 6.1% MC exhibited high germination percentages (60%) after 5 years of storage. Although the germination capacity began to decrease after 6 years, 25% of beech seeds showed some germination capabilities even after 10 years of storage. These results were supported by a follow-up experiment using seeds with 6.6% MC at- 20°C. In the follow-up experiment, seeds maintained high germination percentages 60 after 7 years of storage. These findings indicated that the optimal MC of F. crenata seeds falls between 6% and 9% . The MC of seeds in the first experiment slightly increased (from 6.1% to 7.1%) at the end of 8 years of storage. Seedling malformation was observed in 85 to 25% of germinated seedlings after 4 years of storage; however, malformation did not affect seedling development. Further tests are required to confirm whether this seed storage method is widely applicable for seeds produced in the other distribution range of F. crenata.
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页码：50 / 53
页数：3
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