La Cour L F
Philos Trans R Soc Lond B Biol Sci. 1978 Dec 5;285(1004):61-71. doi: 10.1098/rstb.1978.0094.
The incidence of C-bands (constitutive heterochromatin), as determined by differential Giemsa staining, was studied in the chromosomes of 56 species, varietal forms and subgenera of Fritillaria and 30 of them are illustrated. With the exception of the subgenera Korolkowi, a supposed link between lilies and fritillaries, and chromsome complements of all plants contained bands. There were wide differences in the size and number of these bands among species both within and between groups. In those with the largest and most abundant bands, there was a pronounced tendency for centromeric localization, both in Old and New World species. The Giemsa positive centromeres were masked when this occurred. Heteromorphy in respect of banding occurred in most species. The relation of repetitive DNA sequences with heterochromatin is discussed, as is also the problem of evolution in Fritillaria.
通过吉姆萨差异染色法测定，对56个贝母属物种、变种和亚属的染色体进行了C带（组成型异染色质）发生率的研究，并展示了其中30个的情况。除了被认为是百合与贝母之间联系的Korolkowi亚属外，所有植物的染色体组都含有带纹。这些带纹在组内和组间的物种中，其大小和数量存在很大差异。在那些带纹最大且最丰富的物种中，无论是旧世界还是新世界的物种，着丝粒定位都有明显趋势。当出现这种情况时，吉姆萨阳性着丝粒会被掩盖。大多数物种在带纹方面存在异形性。文中讨论了重复DNA序列与异染色质的关系，以及贝母属的进化问题。
