松科
核型
生物
柏科
倍性
二次收缩
染色体
属
植物
动物
松属
遗传学
基因
花粉
作者
Shing-Rong Kuo,Tze-Ting Wang,Tseng-Chieng Huang
出处
期刊:TAIWANIA
日期:1972-03-01
卷期号:17 (1): 66-80
被引量:7
标识
DOI:10.6165/tai.1972.17.66
摘要
Karyotypes of 13 species of 9 genera and 3 families of gymnosperms have been studied. The chromosome number and/or karyotype analysis of 6 species had been reported by previous workers. The karyotypes of the remaining species are reported here by the present authors for the first time. The diploid chromosome number in Pinaceae is 24, while it is 22 in both the Taxiodiaceae and Cupressaceae. For all Formosan species, the karyotypes of Pinus are similar. The secondary constriction of a chromosome may be a useful character for identification of species. SAT-chromosome have been found in the genus Cunninghamia. The karyotypes of Pinus are symmetrical while they are asymmetrical for the other genera of Pinaceae. Pinus is considered to be the most primitive taxon among genera of Pinaceae. A key for identification of these genera based on their karyotypes has been prepared.
科研通智能强力驱动
Strongly Powered by AbleSci AI