Effects of Temperature on Germination Characteristics of Pinus Sylvesiris var. Mongolica and Picea Mongolica Seed

LI Yin-ke; LIU Shi-zeng; KANG Cai-zhou; MAN Duo-qing; LI De-lu

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Effects of Temperature on Germination Characteristics of Pinus Sylvesiris var. Mongolica and Picea Mongolica Seed

- Effects of Temperature on Germination Characteristics of Pinus Sylvesiris var. Mongolica and Picea Mongolica Seed
- Bulletin of Soiland Water Conservation Vol. 30, Issue 4, Pages: 73-77(2011)
- 作者机构：
  
  1. 甘肃省荒漠化防治重点实验室省部共建国家重点实验室培育基地,甘肃,兰州,730070
  2. 甘肃省治沙研究所,甘肃,兰州,730070
- 作者简介：
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- DOI：
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- Published：2011
- 稿件说明：
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LI Yin-ke, LIU Shi-zeng, KANG Cai-zhou, et al. Effects of Temperature on Germination Characteristics of Pinus Sylvesiris var. Mongolica and Picea Mongolica Seed[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 73-77.
DOI：

LI Yin-ke, LIU Shi-zeng, KANG Cai-zhou, et al. Effects of Temperature on Germination Characteristics of Pinus Sylvesiris var. Mongolica and Picea Mongolica Seed[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 73-77. DOI：

摘要

通过对不同温度条件下樟子松和沙地云杉种子的发芽特征研究，分析了温度对发芽率、发芽势、发芽指数、平均发芽天数、胚根长、胚芽长、胚根/胚芽比和活力指数的影响。结果表明，温度对发芽率、发芽势、发芽指数、平均发芽天数、胚根长、胚芽长、胚根/胚芽比和活力指数的影响均达到极显著水平。10~25℃温度范围内樟子松和沙地云杉均有较高的发芽率，20~25℃为樟子松和沙地云杉发芽的最适温度；温度超过30℃时发芽种子有腐烂现象，所以温度高于30℃不适合樟子松和沙地云杉种子发芽。在适宜温度下，沙地云杉发芽率大于樟子松，且发芽整齐，但樟子松生长快于沙地云杉，耐高温也优于沙地云杉。

Abstract

Effects of temperature on the germination of Pinussylvesiris var.mongolica and Picea mongolicawere studied by observing their germination characteristics such as germination rate

energy

index

mean gemination time

length of radicle and hypocotyl

radicle/hypocotyl ratio and vigor index.The results showed that different germination temperatures significantly influenced germination characteristics mentioned above.The germination rate of Pinussylvesiris var.mongolica and Picea mongolica were all fairly high in the temperature range from 10 to 25

temperature range of 20 to 25 was their optimum range.When the temperature is above 30

it was not suitable for seed germination of Pinussylvesiris var.mongolica and Picea mongolica

because some or all of germinating seeds were rotten.At the optimum temperature range

germination rate of Picea mongolica was higher than that of Pinussylvesiris var.mongolica

and germination was more tidy.How ever

Pinussylvesiris var.mongolica grew faster than Picea mongolica

and the former was more resistant to high temperature than the latter.

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