Effects of seed weight and microsite characteristics on germination and seedling fitness in two species of quercus in a subtropical wet Hill forest
Effects of seed weight and microsite characteristics on germination and seedling fitness in two species of quercus in a subtropical wet Hill forest
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DOI：
10.2307/3565956
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发表时间：
1990-04
期刊：
影响因子：
3.4
通讯作者：
R. Tripathi;M. L. Khan
中科院分区：
文献类型：
--
作者：
R. Tripathi;M. L. Khan
特里帕蒂河S.和汗，M。L. 1990.亚热带湿润丘陵林两种栎属植物种子重量和微生境特征对发芽和幼苗适合度的影响。- Oikos 57：289-296.栎属（Quercus）两种植物种子重量差异较大。[医]银叶草属and Q.格里菲蒂港F.（& Th.）选择本研究。研究了种子重量和微立地特征变化对栎属幼苗萌发和存活的影响。发芽率与种子重量呈强相关。重粒种子比轻粒种子发芽早，发芽率高，幼苗成活率高，生长势好。不同粒重种子的幼苗生长差异在第二年也持续存在。出苗率、存活率和幼苗生长量在无枯枝落叶层和草本层覆盖的地块中最高，在未清除的对照地块中最低。草本覆盖对幼苗出苗、存活和生长的影响大于凋落物。
Tripathi, R. S. and Khan, M. L. 1990. Effects of seed weight and micro site characteristics on germination and seedling fitness in two species of Quercus in a subtropical wet hill forest. - Oikos 57: 289-296. There is large variation in seed weight within the two species of Quercus (Q. dealbata L. and Q. griffithii Hk. f. & Th.) selected for the present study. Effects on germination and survival of oak seedlings were studied in relation to variation in seed weight and microsite characteristics. Germination showed a strong correlation with seed weight. Heavy seeds germinated earlier and showed better germination than light seeds and seedlings produced from the former survived and grew better. The differences in growth of the seedlings emerged from the seeds having different weights persisted in the second year also. Emergence, survival and growth of the seedlings were highest in the plots devoid of litter and herbaceous cover and lowest in the control plots which were not cleared. Seedling emergence, survival and growth were more adversely affected by herbaceous cover than litter.