| 中国芸苔属的新资料 |
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| 引用本文： | 蓝永珍,周太炎.中国芸苔属的新资料[J].中国科学院研究生院学报,1991,29(1):71-75. |
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| 作者姓名： | 蓝永珍 周太炎 |
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| 摘 要： | 本文报道了三种芸苔属植物的外部形态、种子解剖、花粉形态和染色体数目。研究结
果表明：新疆毛芥；黑芥；鸡冠菜；均是三个独立的种。其中1新种、1新等级。
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| 关 键 词： | 芸苔属 新疆毛芥 鸡冠菜 黑芥 |
New Materials for Chinese Brassica (Cruciferae) |
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| Lan Yong-Zhen,Cheo Tai-Yien.New Materials for Chinese Brassica (Cruciferae)[J].Journal of the Graduate School of the Chinese Academy of Sciences,1991,29(1):71-75. |
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| Authors: | Lan Yong-Zhen Cheo Tai-Yien |
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| Abstract: | The present study deals with external morphology, chromosome number, pollen
morphology and seed anatomy of three species of Brassica in China. The results are sum-
marized as follows:
1. Brassica xinjiangensis is described as a new species based on the chromosome num-
ber n=9, and 3-4-colpate and reticulate pollen grains. In the transverse section of seed,
epidermal cells are triangular, semiterete or irregular, subepidermal cells consist of one se-
ries, palisade cells terete and equal in length. Leaves are petiolate or not; stems, sepals,
pistils and siliquae are usually covered with retrorse-pilose hairs; rostrum stout, 12 mm long.
By the above characters this species differs from others in this genus.
2. Relationship between B. nigra and B. xinjiangensis. In the former all leaves are
petiolate, and the lower part of stems and leaves usually bristly; sepals, pistils and siliquae
are glabrous; pedicels are erect and appressed to the axis of infructescence; rostrum is gra-
cile, 2.5 mm long. The chromosome number is n=8. Pollen grains are 3-colpate; the exine
is cerebroid-reticulate under SEM. In the transverse section of seeds, epidermal cells are
undulate, subepidermal cells in 1-2 series, palisade cells terete, short and unequal in length.
These characteristics are the same as reported by Koch (1833), Darlington and Wylie (1955),
Goldblatt (1981), Vaughan et al. (1971), Lan (1986).
3. Taxonomical position of B. celerifolia. It was treated as B. juncea var. celerifolia
by Tsen et Lee (1942). According to the chromosome number n=10, 3-4-colporate pollen
grains, it deserves specific rank. This species differs from B. juncea, which has the chromo-some number n=18 and 3-4-colpate pollen grains. |
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| Keywords: | Brassica B xinjiangensis B nigra B celerifolia |
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