The present study aimed to investigate the effect of the polyethylene glycol (PEG-6000) simulated graduated drought stress (5%, 10%, 20% and 40% PEG-6000 equaled to mild, moderate, strong and heavy levels, respectively) on the germination of seeds from Chinese fir second improved seed orchard and its seedlings regarding to their dynamic change at different stages (cotyledon and true leaf stages). The results indicated that germination of the Chinese fir seeds required adequate water and were rather drought-sensitive. Worsening drought largely delayed the germination time, and significantly reduced the germination rate. The late cotyledon state seedlings were more drought tolerant than those at early stage, while true leaf state seedlings seemed to have strong tolerance to mild and moderate stress.
Lü Qing-yun
,
HU De-huo
,
DENG Hou-yin
,
YAN Shu
,
WEI Ru-ping
,
WANG Run-hui
,
ZHENG Hui-quan
. Drought Tolerance of Chinese Fir Seeds and Seedlings at Different Developmental Stages[J]. Subtropical Plant Science, 2020
, 49(02)
: 107
-111
.
DOI: 10.3969/j.issn.1009-7791.2020.02.004
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