Variation of B Chromosome Associated with Tissue Culture in Wheat-rye Cross Karyotype studies of Allium prattii among 4 populations in Southern Qinghai A study on cytotaxonomy of Sect. Anguinum of Allium A New Species of the Genus Aconitum L. from Yunnan, with an Observation on Its B Chromosomes Characters of DNA Constitution in the Rye B Chromosome Isolation and Chromosomal Mapping of a Corn B Chromosome Specific RAPDs The accumulation of dry matter and phosphorus efficiencies in wheat chromosome B ditelosomic lines under both sufficient- and low-Pi conditions Phylogenetic and cytogenetic studies reveal hybrid speciation in Saxifraga subsect. Triplinervium (Saxifragaceae) A Comparative Karyotypic Study of Three Species in Fritillaria Supplemental Cytogeographical Studies on the Scilla sinensis (Louriro) Merrill Complex in China