摘要
对加拿大披碱草与老芒麦种间杂种F1的形态学和细胞学特征进行研究。结果表明,F1生长势明显超过双亲,穗型呈双亲中间型;杂种F1的体细胞染色体核型公式为2n=22m+6sm;F1为真杂种;F1花粉母细胞后期Ⅰ有落后染色体出现,落后染色体细胞频率达87.37%,减数分裂中期染色体配对紊乱,形成较多的棒状二价体。
Morphologic and cytological characteristics of hybrid F1 between E. canadensis and E. sibiricus were studied. The results showed that hybrid F1 were obviously exceeded parents in plant growth vigor, and spike type of F1 was between parents. The karyotype formula of hybrid F1 which was true hybrid was 2n = 22m ＋ 6sin. At meiotic anaphase, chromosome lagging behaviors were frequently observed. The frequency of lagging chromosomes of F1 was 87.37%. At meiotic metaphase, there were many univalents and muhivalents, and the rod bivalent formed greatly.
出处
《安徽农业科学》
CAS
北大核心
2010年第1期103-106,121,共5页
Journal of Anhui Agricultural Sciences
基金
十一五科技支撑项目"牧草远缘杂交育种技术研究"(2008BADB3B02)
内蒙古自治区重大科技项目"优质全价草产品开发"
2010年教育部重点项目"加拿大披碱草与老芒麦远缘杂交后代不育机理的研究"
