五叶地锦种实性状的观察与测定  

Observation and determination of fruit and seed characters of Parthenocissus quinquefolia

作　　者：张德平[1] 刘秋瑾[2] 李永生[3] 

机构地区：[1]吉林省林业调查规划院延吉分院,吉林延边133000 [2]吉林省蛟河林业实验区管理局,吉林吉林132517 [3]长春大学生物科学技术学院,吉林长春130022

出　　处：《吉林林业科技》2011年第3期11-13,共3页Journal of Jilin Forestry Science and Technology

摘　　要：以不同年份采集的五叶地锦果实和种子为材料,对其有关性状进行观察与测定,结果表明：2005-2008年采集的种子千粒重依次分别为：25.4g、26.1g、25.7g、28.0g,均值为26.3g,差异不显著,这与长期无性繁殖密切相关。果实中含种子1-4粒不等,以1-3粒者居多。种子横切面呈圆形、半圆形、伞形和三角形,并具有不同的角度。种皮致密、坚硬,极其不易吸水,透性差,未经层积的种子发芽率低于20%,属于种皮机械障碍导致的深休眠类型。The fruits of Parthenocissus quinquefolia were collected during 2005？2008 for determining the fruit character.Thousand seed weight for the seeds collected in 2005,2006,2007,and 2008 was 25.4 g,26.1 g,25.7 g,and 28.0 g,respectively,with an average weight of 26.3 g.No significant difference in thousand seed weight was found for the seeds collected in different years,which is closely related to long-term vegetative propagation.Fruit contains seeds ranging from 1-4;however,in most cases a fruit contains 1-3 seeds.The cross section of seed presents rounding,semicircular,umbrella-type and triangle with different angles.Seed coat is compact,hard and difficulty for vapor to permeate.The germination percentage for the seeds without stratification was lower 20%.The seeds of P.quinquefolia belong to deep dormancy type due to mechanical obstacles of seed coat.

关 键 词：五叶地锦 种子 千粒重 发芽率 种皮机械障碍 

分 类 号：Q944.59[生物学—植物学]