Hystrix patula与Pseudoroegneria libanotica属间杂种的细胞学研究  

Cytogenetic study on intergenetic hybrids between Hystrix patula and Pseudoroegneria libanotica (Poaceae:Triticeae)

作　　者：余小芳[1] 周永红[1] 张海琴[1] 丁春邦[1] 袁明[1] 

机构地区：[1]四川农业大学小麦研究所,四川都江堰611830

出　　处：《广西植物》2006年第5期573-575,共3页Guihaia

基　　金：国家自然科学基金(30270099;30470135);长江学者和创新团队发展计划(IRT0453);四川省教育厅重点项目(05-03)~~

摘　　要：为研究猬草Hystrixpatula的染色体组组成,进行了H.patula与Pseudoroegnerialibanotica的人工杂交,获得杂种F1,观察了亲本和杂种F1花粉母细胞减数分裂染色体配对行为。杂种F1染色体配对较高,84%的细胞形成7个或7个以上二价体,其构型为6.08Ⅰ+7.48Ⅱ,C-值为0.69。结果表明,H.patula含有St染色体组。In order to determine the genomic constitution of Hystrix patula Moench,the generic hybridization between H. patula and Pseudoroegneria libanotica（Hack. ）A. L6ve was carried out. Hybrids were obtained successfully and chromosome pairing behaviors in the hybrid F1 were investigated. The chromosome pairing at M I of PMCs in F1 hybrids was relatively high, and 84% of PMCs showed 7 or 〉7 bivalents per cell. Meiotic configurations were 6.08 1 ＋7.48 Ⅱ,with a C-value of 0.69. The results indicate that H. patula and P. libanotica share one St genome.

关 键 词：HYSTRIX patula PSEUDOROEGNERIA libanotica 属间杂交 减数分裂 染色体组 

分 类 号：Q942[生物学—植物学]