种皮和播种深度对辽东栎种子萌发和幼苗早期生长的影响

应用生态学报

种皮和播种深度对辽东栎种子萌发和幼苗早期生长的影响

闫兴富^1**,仇智虎²,张嫱¹,张靠稳¹,周云锋¹

(¹北方民族大学生物科学与工程学院, 银川 750021； ²宁夏罗山国家级自然保护区管理局, 宁夏红寺堡 751900)

出版日期:2014-01-18 发布日期:2014-01-18

Effects of coat and sowing depth on seed germination and early seedling growth of Quercus wutaishanica.

YAN Xing-fu¹, QIU Zhi-hu², ZHANG Qiang¹, ZHANG Kao-wen¹, ZHOU Yun-feng^1

(¹College of Biological Science and Engineering, Beifang University of Nationalities, Yinchuan 750021, China; ²Administration Bureau of Luoshan National Nature Reserve, Hongsibu 751900, Ningxia, China)

Online:2014-01-18 Published:2014-01-18

摘要/Abstract

摘要：

在玻璃温室内遮荫条件下，研究种皮和播种深度(0、2、5、10和15 cm)对辽东栎种子萌发和幼苗早期生长的影响.结果表明：种皮对辽东栎种子萌发具有明显的抑制作用，去除种皮后，种子萌发率显著升高，不同播种深度处理种子萌发率平均升高19.4%，且萌发指数和活力指数显著增大，萌发进程加快.去皮种子和非去皮种子的萌发率均在2 cm播种深度下最大，分别为78.9%和62.2%；萌发指数和活力指数均在2 cm播种深度下最大，而萌发速率系数在5 cm播种深度下最大.去皮处理幼苗的单株叶面积和干质量与非去皮处理相比均显著增大，但比根长显著减小.去皮和非去皮处理幼苗株高均在5 cm播种深度下最大，分别为13.8和14.2 cm；基径随播种深度增加逐渐增大，而主根长、侧根数和最大侧根长均减小；幼苗干质量受播种深度影响较小.

Abstract: Under shade environment in glasshouse, the effects of seed coat and sowing depth (0, 2, 5, 10 or 15 cm) on seed germination and early seedling growth of Quercus wutaishanica were studied. Seed coat had obvious inhibiting effects on the germination of Q. wutaishanica seeds. The germination percentage of uncoated seeds increased significantly, averagely by 19.4% at different sowing depths. The germination index and vigor index were increased significantly and the germination was speeded in the peeling treatment. The germination percentages of uncoated and coated seeds were the highest at the sowing depth of 2 cm with 78.9% and 62.2%, respectively. The germination index and vigor index were the highest at the sowing depth of 2 cm, while the coefficient of rate of germination were the highest at the sowing depth of 5 cm. Leaf area per seedling and dry mass of seedlings increased significantly in the peeling treatment compared with those in the unpeeling treatment, but specific root length decreased significantly. The shoot height in the peeling and unpeeling treatments were the highest at the sowing depth of 5 cm with 13.8 and 14.2 cm, respectively. With the increasing of sowing depth, the basal stem diameter of seedlings increased, but taproot length, number of lateral root and maximum of lateral root all decreased. Sowing depth had little influence on dry mass of seedlings.

闫兴富1**,仇智虎2,张嫱1,张靠稳1,周云锋1. 种皮和播种深度对辽东栎种子萌发和幼苗早期生长的影响[J]. 应用生态学报.

YAN Xing-fu1, QIU Zhi-hu2, ZHANG Qiang1, ZHANG Kao-wen1, ZHOU Yun-feng1. Effects of coat and sowing depth on seed germination and early seedling growth of Quercus wutaishanica.[J]. Chinese Journal of Applied Ecology.