我所于1976年开展大白(艹才)花粉单倍体育种研究工作以来,1977年得到花粉植株五苗,其根尖压片(钅井)检染色体数为 n=10,确定其来沅于花粉的单倍体植株。1978年又得到18株花粉植株,在夏季高温的气候条件下,先后移栽了7株,成活4株,有2株开花,其中1株经自然加倍后首次获得种子,从而为大白(艹才)单倍体育种工作开了个头。1978年我们诱导花粉愈伤组织用的基本培养基是:Ms、麦基1号、N_6并附加激动 In 1976, when I started the pollen haploid breeding research at Dabai (艹 才), we obtained five seedlings of pollen plants in 1977. The number of chromosomes in the root tip tablet (钅 井) was n = 10, Pollen haploid plants. In 1978, 18 pollen plants were obtained. Under the climatic conditions of summer high temperature, 7 plants were transplanted one after another, 4 were survived and 2 plants were blossomed. Among them, 1 was naturally doubled for the first time to obtain seeds, Haploid breeding began. The basic medium for inducing pollen callus in 1978 was Ms, McKim 1, N_6 with additional agonist