docMeiotic behaviour and pollen fertility in the seventeen
download 
Denúncia Documentos relacionados
Chromosome number in meiotic stage cells and pollen viability of
The cell suspensions used were prepared according to Viccini et al. (2005) with some modifications. About 40 anthers were excised from 12
flower buds and placed in a special microtube (0.5
ml) with...
Haploid Independent Unreductional Meiosis in Hexaploid
f’) and microtubule cytoskeleton in green (a’’, b’’, c’’, d’’, e’’ and f’’). All images have
identical magnification, bar = 10μm.
However, a significant proportion of the meiocytes (18.4%) present ...
13º 1166 9(4).PMD
forest patches near cultivated areas. Fruits from each
population were collected and numbered. As each fruit
has from two to three seeds, one seed per fruit was
used for the cytological study and t...
Pollen viability and meiotic analysis of Pollen viability and
abnormalities the early migration of chromosomes at
metaphase I and the asynchronous division at
metaphase II (Table 2 and Figure 1-A and B) were salient.
However, the asynchronous division in meio...
Karyotype variation in cultivars and spontaneous cocoa mutants
DISCUSSION
The diploid chromosome number of 2n = 20 was observed in all accessions used in
this study, confirming previous cytological studies conducted in T. cacao and related species
in the genus...
Kellen Boldrini
sexual through the formation of 2n gametes. The first assumption was seriously
questioned by Harlan and De Wet (1975) since it has been shown that 2n gametes are
widespread in plants (Harlan and De...
