Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi, Pakistan.
Microsc Res Tech. 2019 Jul;82(7):1073-1082. doi: 10.1002/jemt.23255. Epub 2019 Mar 22.
Seed micromorphological and macromorphological characteristics of 12 taxa of Caesalpiniaceae from Pakistan have been studied, using light and scanning electron microscopy, to investigate the importance of seed coat features as a taxonomic tool. Great variations have been observed in color, shape, dimension, and seed surface pattern among the different genera of the family. A taxonomic key was prepared for the studied taxa. Six types of seed shapes were observed; circular, elliptical, irregular, oblong, oval, and ovoid. All examined seeds were hard except fragile seeds of Haematoxylom campechianum. Eight types of surface ornamentation have been noticed that include levigate, lugose, papillate, reticulate, reticulate irregular, reticulate regular, rhombus, and rogues. Majority of the taxa has been observed with thick ornamentation wall but thin ornamentation wall has also been recorded in few species. Fracture line of the various patterns was present in all taxa except genus Bauhinia. Three types of texture crudeness; coarse, medium, and fine have been recorded. Both micromorphological and macromorphological characters of seed are very fruitful in identification and classification of Caesalpiniaceae.
对来自巴基斯坦的 12 种苏木科植物的种子微观和宏观形态特征进行了研究，使用了光学显微镜和扫描电子显微镜，以探讨种皮特征作为分类工具的重要性。在该科的不同属之间，观察到颜色、形状、尺寸和种子表面图案的巨大变化。为所研究的分类群编制了一个分类钥匙。观察到六种类型的种子形状：圆形、椭圆形、不规则形、长圆形、卵形和椭圆形。除了 Haematoxylom campechianum 的易碎种子外，所有检查的种子都是硬的。注意到八种类型的表面纹饰，包括平滑、有隆脊的、具乳突的、网状的、不规则网状的、规则网状的、菱形的和不规则的。大多数分类群的纹饰壁较厚，但也记录了少数物种的纹饰壁较薄。除了 Bauhinia 属外，所有分类群都有各种模式的断裂线。记录了三种类型的粗糙纹理；粗糙、中等和精细。种子的微观和宏观形态特征在苏木科的鉴定和分类中非常有用。
