Mitotic behavior in root tips of Brachiaria genotypes with meiotic chromosome elimination during microsporogenesis

被引：1
|
作者：
Felismino, M. F. [1 ]
Silva, N. [1 ]
Pagliarini, M. S. [1 ]
Valle, C. B. [2 ]
机构：
[1] Univ Estadual Maringa, Dept Biol Celular & Genet, Maringa, Parana, Brazil
[2] Embrapa Gado de Corte, Campo Grande, MS, Brazil
来源：
GENETICS AND MOLECULAR RESEARCH | 2008年 / 7卷 / 02期
关键词：
Brachiaria; chromosome elimination; mitosis; meiosis;
D O I：
10.4238/vol7-2gmr437
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Three accessions of Brachiaria brizantha, three of B. humidicola, and two interspecific hybrids between B. ruziziensis and B. brizantha were analyzed with regard to their mitotic behavior in root tips. All these genotypes revealed chromosome elimination or lack of chromosome affinity in previous analyses of microsporogenesis. Analyses of root tips showed a normal mitotic division in all accessions and hybrids, reinforcing the notion that the genetic control of meiosis is totally independent of that of mitosis. The implications of these findings for the Brachiaria breeding program are discussed.
引用
收藏
页码：336 / 341
页数：6
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