| 中国薯蓣属根状茎组系统分类的初步研究 |
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| 引用本文： | 裴鉴,丁志遵,秦慧贞,舒璞,唐世蓉,张涵庆.中国薯蓣属根状茎组系统分类的初步研究[J].中国科学院研究生院学报,1979,17(3):61-72. |
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| 作者姓名： | 裴鉴 丁志遵 秦慧贞 舒璞 唐世蓉 张涵庆 |
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| 摘 要： | 本文根据我国薯蓣属(Dioscorea L．)根状茎组(Sect. Stenophora Uline)的外部形态特征、细胞染色体数、花粉形态、植物化学成分、地理分布等的规律，证明根状茎组是该属中的一个比较原始的自然类群：1．具横走的多年生地下根状茎，其它组是一年生或多年生的块茎；2．大部分是2倍体，其它组是多倍体；3．花粉粒单沟型，外壁纹饰网纹或颗粒条纹，其它组为双沟型，外壁纹饰网纹；4．含甾体皂甙元(steroidal sapogenin)，其它组不含。
我们的研究观察证明，N．N．TepaCNMeHKO根据R.Knuth系统(1924)提出的薯蓣皂甙元在该属中无分布规律的说法是无充分依据的。
本文讨论了某些组或种的划分及系统位置：取消sect.Illigerestrum Prain et Burk.；将马 肠薯蓣(D．simulans Prain et Burk．)改属根状茎组；触丝薯蓣(D．tentaculigera Prain et Burk.)应列入顶生翅组 (Sect．shannicorea Prain et Burk．)， 并提出了盾叶薯蓣 (D. zingiberensis Wright)和穿龙薯蓣(D．nipponica Makino)种的划分和定名的意见。
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A preliminary systematic study of Dioscorea L. sect. Stenophora Uline |
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| Pei Chien,Ting Chih-Tsun,Chin Hui-Chen,Su Pu,Tang Shih-Yung,Chang Hang-Ching.A preliminary systematic study of Dioscorea L. sect. Stenophora Uline[J].Journal of the Graduate School of the Chinese Academy of Sciences,1979,17(3):61-72. |
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| Authors: | Pei Chien Ting Chih-Tsun Chin Hui-Chen Su Pu Tang Shih-Yung Chang Hang-Ching |
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| Abstract: | The synthetic studies on the external morphology, cytology, pollen morphology and
phytochemistry of the Sect. Stenophora Uline of Dioscorea L. give the evidence to
their phylogenetic relationships and indicate that this section is a primitive natural
group of this genus, characterized by: 1. The horizonal and perennial subterranean
rhizome, while the members of other sections bear annual or perennial vertical tubers.
2. Most of its species are diploids, while the species of other sections are polyploids. 3.
The pollen grain is monocolpate, the ornamentation of the exine is reticulate or
granulate-striate, while those of the other sections are bicolpate, reticulate. 4. All the
species in this section contain steroidal sapogenin, while the members of other sections
are devoid of sapogenin.
According to R. Knuth's classification (1924), N. N. FepacNMeHKo (1972) sug-
gested that no apparent relationship was found in the distribution of steroidal sapo-
genin to the species of Dioscorea, our studies on the Sect. Stenophora showed the dis-
agreement to his conclusions.
Regarding the systematic position of section and species, we suggest Burkill's
Sect. Illigerestrum should be cancelded, the species D. simulans erroneously put into
Sect. Illigerestrum by Burkill (1936) be to the Sect. Stenophora. We also suggest that
D. tentaculigera Prain et Burk. of Sect. Stenophora as treated by Burkill should be
transferred to Sect. Shannicorea.
The classification and nomenclature of the species D. zingiberensis Wright and
D. nipponica Makino are also discussed.
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