B chromosomes in popcorn (Zea mays L. )
Genet. mol. res. (Online)
; Genet. mol. res. (Online);6(1): 137-143, 2007. tab, ilus
Article
de En
| LILACS
| ID: lil-456759
Bibliothèque responsable:
BR1.1
ABSTRACT
Cytological analysis of microsporogenesis in 72 popcorn plants, comprising nine from the original population (CMS-43, S0) and 63 from seven cycles of self-fertilization (S1 to S7), one plant of S0 generation (plant 2) was identified with B chromosomes. The number of B chromosomes varied from two to three in the same anther. The pattern of chromosome pairing and meiotic behavior of Bs were similar to those found in other plant species. The presence of B chromosomes did not affect chiasma frequency and chiasma distribution in A chromosomes. This is the first report of B chromosomes in popcorn
Texte intégral:
1
Indice:
LILACS
Sujet Principal:
Génome végétal
/
Zea mays
/
Crossing-over
/
Chromosomes de plante
/
Méiose
langue:
En
Texte intégral:
Genet. mol. res. (Online)
Thème du journal:
BIOLOGIA MOLECULAR
/
GENETICA
Année:
2007
Type:
Article