Meiotic observations of eight taxa in the genus Salvia

作者：Meng Wang; Zhang Li^*; Ding Chun bang; Yang Rui wu; Zhou Yong hong; Yang Zai jun; Yin Zhong qiong

来源：Caryologia, 2009, 62(4): 334-340.

• bivalents
• chromosome behavior
• chromosomes bridges
• meiosis
• Salvia

Observations were made on chromosome morphology and behavior during meiosis of PMCs (pollen mother cells) for eight taxa in the genus Salvia: S. miltiorrhiza Bunge, S. miltiorrhiza Bunge var. miltiorrhiza f. alba C. Y. Wu et H. W. Li, S. cynica Dunn., S. flava Forrest, S. yunnanensis C. H. Wright, S. cavaleriei Levl. var. simplicifoli a Stib., S. przewalskii Maxim. and S. brevilabra Franch. Results show that the basic chromosome number in the genus Salvia is x=8. The chromosome configurations in S. miltiorrhiza (from Sichuan, Shandong, Zhejiang and Shanxi), S. miltiorrhiza f. alba, S. cynica, S. flava, S. yunnanensis and S. cavaleriei var. simplicifolia are formulated uniformly as 8II. In S. miltiorrhiza from Henan, the typical chromosome configuration observed at metaphase is 0.13 I + 7.80 II + 0.07 IV, whereas that in S. przewalskii is 0.33 I + 15.50 II + 0.16 IV and in S. brevilabra is 0.53 I + 15.73 II. Configurations of the bivalents in all materials investigated are different. According to the chromosomes pairing in metaphase I, except that S. przewalskii and S. brevilabra are tetraploids, the others are diplonts. Chromosomes bridges or lagging chromosomes are appeared at anaphase II in S. miltiorrhiza from Henan, S. przewalskii and S. brevilabra. The abnormal behaviors of the chromosomes in meiosis observed may have effects on the development of pollen grains in these taxa.

• 出版日期2009-12
• 单位四川农业大学