葱属合被组植物的引种栽培及染色体观察

对国产葱属合被组（ＡｌｌｉｕｍＳｅｃｔ．Ｃａｌｏｓｃｏｒｄｕｍ）的长梗韭（Ａ．ｎｅｒｉｎｉｆｌｏｒｕｍ）和合被韭（Ａ．ｔｕｂｉｆｌｏｒｕｍ）进行了引种栽培实验及染色体观察，结果表明：将原野生状态下生长的这２个种转为人工条件下栽培，长势良好，能正常开花结实；体细胞染色体数显示，长梗韭四个居群均为二倍体２ｎ＝２ｘ＝１６，合被韭的一个居群为二倍体２ｎ＝２ｘ＝１６，另一个居群为四倍体２ｎ＝４ｘ＝３２，所不同的是长梗韭染色体带有一对中间随体，而合被韭染色体则带有一对或二对末端随体。此外，首次发现合被韭存在有二次生长现象。

STUDY ON THE INTRODUCTION AND CHROMOSOMES OFALLIUM SECT.CALOSCORDUM

Six populations of wild species A.neriniflorum and A.tubiflorum were introducedinto our garden,now they grow very well and can bloom and seed. Except the one populationg of A.tubifiorum which is a tetraploid(2n=4x=32),theother populations of A.tubiflorum and A.neriniflorum are diploid(2n=2x=16).Thedifference between these species is that A.tubiflorum has one or two pair of termialsatellites,but A.neriniflorum has one pair of intercalary satellites.Addition,we found that A.tubiflorum possesses the property of the two-growth in agrowth cycle in Allium for the first time.