Comparative leaf anatomy for six cultivars of Paeonia suffruticosa from Lijiang and Zhongyuan,China
-
摘要: 对云南丽江3个牡丹Paeonia suffruticosa品种与代表中原的3个牡丹品种的叶微形态结构进行了比较观察。结果表明:中原牡丹品种与丽江牡丹品种在解剖特征上最大的差异表现为栅栏组织形态、海栅比及气孔密度的差异。中原牡丹品种具有旱生植物的解剖特点,栅栏组织发达,排列紧密,气孔较小,而丽江牡丹品种则表现为栅栏组织的退化,细胞间隙大,海栅比大。丽江3个牡丹品种中,香玉板Paeonia suffruticosa Xiangyuban和丽江粉Paeonia suffruticosa Lijiangfen在气孔密度、气孔大小上的差异不大;而丽江紫Paeonia suffruticosa Lijiangzi气孔密度最大;丽江粉具有稍发达的栅栏组织,细胞多呈长柱状,海绵组织稀疏松,细胞小,海栅比最小,且海栅比和气孔指数与中原牡丹3个品种相差不大;叶比较解剖特征反映出两品种群间的耐湿能力存在差异,气孔密度和海栅比与品种的耐湿能力呈正相关。图1参15Abstract: To determine their adaptability,the micro-morphological structures of six Paeonia suffruticosa (peony) tree cultivars:Xiangyuban Lijiangfen Lijiangzi from Lijiang of China and WulongpenshengQinlongwomochiShouanhongfrom central plains of China(Zhongyuan) were compared. Results for Zhongyuan cultivars and Lijiang cultivars showed large differences in the cellsmorphology for palisade tissue,in the ratio of spongy tissue to palisade tissue,and in stomatal density. Also,Zhongyuan cultivars had typical anatomical characteristics for drought resistance with highly developed and closely arranged palisade tissue;whereas Lijiang cultivars had degenerated palisade tissue,large intercellular spaces,and a high ratio of spongy tissue to palisade tissue. ForXiangyuban and Lijiangfen,cell morphology and stomatal characteristics,such as stomatal density and size,were similar. However,Lijiangzi was more capable of adjusting its transpiration due to stomatal density. Meanwhile,Lijiangfen had relatively developed palisade cells,most of which were columnar and closely arranged with sparse,small spongy cells. Smaller ratio of spongy tissue to palisade tissue,which has no significant difference in ratio of spongy tissue and palisade tissue and stomatal density with three Zhongyuan cultivars. Zhongyuan cultivars have different resistance of waterlogging with Lijiang cultivars by comparing their leaf anatomical structures. It showed that stomata density and ratio of spongy tissue to palisade tissue were positively correlated with resistance of waterlogging.[Ch,1 fig. 15 ref.]
-
Key words:
- horticulture /
- Paeonia suffruticosa /
- tomatal density /
- palisade tissue /
- spongy tissue /
- adaptability
-
链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.01.018
计量
- 文章访问数: 4889
- HTML全文浏览量: 220
- PDF下载量: 1236
- 被引次数: 0