Effect of different temperature and moisture conditions on seedling growth of Festuca sinensis

doi:10.11686/cyxb2015492

Abstract

Abstract:

Morphological characteristics of Festuca sinensis seedling growth were studied using the inner potted method under different temperature and moisture conditions. In order to explore the appropriate conditions for seedling growth, natural growth conditions were simulated by setting four soil moisture contents (80%, 65%, 50% and 35% field maximum water capacity, FWC) and three temperature levels (15, 20 and 25 ℃). The results showed that the emergence rate of F. sinensis was highest under the condition of 25 ℃ and 65% moisture content (P<0.05). The plant height of the control and other moisture treatments were significantly higher at 20 ℃ than the 15 and 25 ℃ treatments (P<0.05). Seedling stem diameter under the three temperature treatments all reached their highest scores under the 65% moisture content condition, while the lowest scores were recorded at 35% moisture content (P<0.05). At 15 and 20 ℃, blade width, plant tissue water content, plant height stress index and dry matter stress index were the largest at the 65% moisture condition and lowest at the 35% moisture condition. However, at 25 ℃ these factors decreased with the loss of soil moisture content, with the highest scores recorded at the 80% moisture condition. The root-shoot ratios of F. sinensis under the three temperature treatments increased with the loss of the soil moisture content, reaching maximum levels at 35%, significantly greater than the control and other moisture treatments (P<0.5). Under the 20 ℃ treatment, seedling root length was the largest at 35% moisture content, while under the 15 and 25 ℃ treatments it was largest at 50% moisture content and significantly greater than the control and other moisture treatments (P<0.05). Therefore, it is concluded that 20 ℃ temperature and 65% soil moisture content is the most suitable condition for the growth of F. sinensis seedlings.

WANG Jian-Jun, WANG Zhi-Gang, MA An-Wei, LIN Wei-Hu, KUANG Yu, TIAN Pei. Effect of different temperature and moisture conditions on seedling growth of Festuca sinensis[J]. Acta Prataculturae Sinica, 2016, 25(8): 65-73.

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