中国芸苔属的新资料

中国科学院大学学报

中国芸苔属的新资料

蓝永珍, 周太炎

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-01-18 发布日期:1991-01-18
通讯作者: 蓝永珍

New Materials for Chinese Brassica (Cruciferae)

Lan Yong-Zhen, Cheo Tai-Yien

Received:1900-01-01 Revised:1900-01-01 Online:1991-01-18 Published:1991-01-18
Contact: Lan Yong-Zhen

摘要/Abstract

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。

关键词: 芸苔属, 新疆毛芥, 鸡冠菜, 黑芥

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.

Key words: Brassica, B. xinjiangensis, B. nigra, B. celerifolia

蓝永珍, 周太炎. 中国芸苔属的新资料[J]. 中国科学院大学学报.

Lan Yong-Zhen, Cheo Tai-Yien. New Materials for Chinese Brassica (Cruciferae)[J]. .

[1]	蓝永珍, 周太炎, 钱伟珍. 中国芸苔属植物花粉形态的研究[J]. 中国科学院大学学报, 1989, 27(5): 386-394.
[2]	蓝永珍. 中国芸苔族植物染色体数目的观察[J]. 中国科学院大学学报, 1986, 24(4): 268-272.