CAJ | 학술논문

对巴西橡胶树(Hevea brasiliensis)新品种云研77-2和云研77-4及其亲本PR107和GT1的染色体进行了细胞学观察,并介绍了它们的育种历程.结果表明:PR107和GT1的染色体数为2n=2x=36,云研77-2和云研77-4的染色体数目为2n=3x=54,均为三倍体;利用特殊父母本建立杂交授粉园获取种子,设定合理的筛选标准在逆境中进行实生筛选是巴西橡胶树新品种选育的有效途径.
대파서상효수(Hevea brasiliensis)신품충운연77-2화운연77-4급기친본PR107화GT1적염색체진행료세포학관찰,병개소료타문적육충역정.결과표명:PR107화GT1적염색체수위2n=2x=36,운연77-2화운연77-4적염색체수목위2n=3x=54,균위삼배체;이용특수부모본건립잡교수분완획취충자,설정합리적사선표준재역경중진행실생사선시파서상효수신품충선육적유효도경.
The chromosomes of two new varietiese 'Yunyan 77-2' and 'Yunyan 77-4' and their parents 'PR107'and 'GT1'were observed.and the breeding process of the new varieties was summarized.The results showed that the chromosome number of 'PR107'and GT1'is 2n=2x=36.whereas 2n=3x=54 for 'Yunyan 77-2' and 'Yunyan 77-4'.'Yunyan 77-2' and 'Yunyan 77-4' are triploids.It is an effective way to breed new Hevea varieties by establishing a pollination garden of special parents,setting reasonable screening criteria and selecting the polyploid seedlings under stress circumstances.