Differential mitotic behaviour of genetically balanced and unbalanced microspores of an interchange heterozygote of Allium triquetrum

1986 ◽  
Vol 28 (6) ◽  
pp. 926-931
Author(s):  
Geoffrey K. Rickards
Keyword(s):  
Reciprocal Translocation ◽  
Pollen Grain ◽  
Differential Behaviour ◽  
Interchange Heterozygote

Genetically balanced and unbalanced microspores of an interchange heterozygote of Allium triquetrum are shown to behave differently with respect to their first pollen grain mitosis (PGMI). Two types of unbalanced microspores abort immediately prior to PGMI, while another two types are delayed in their progression through PGMI. The data presented have relevance to transmission potentials of unbalanced postmeiotic cells and estimates of their frequencies in interchange (reciprocal translocation) heterozygotes.Key words: differential behaviour, unbalanced cells, pollen grain mitosis, interchange heterozygosity.

Temporal Changes in Pollen Grain Concentration Predict Short-Term Clinical Outcomes in Acute Coronary Syndromes

2021 ◽  
Vol 30 ◽  
pp. S112
Author(s):  
O. Al-mukhtar ◽  
S. Vogrin ◽  
S. Noaman ◽  
E. Lampugnani ◽  
D. Dinh ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Acute Coronary Syndromes ◽  
Temporal Changes ◽  
Pollen Grain ◽  
Short Term ◽  
Coronary Syndromes

Pollen Grain Granuloma: A new clinicopathologic entity

1986 ◽  
Vol 17 (8) ◽  
pp. 856-857 ◽  
Author(s):  
David A. Schwartz ◽  
Roger Denio Baker
Keyword(s):  
Pollen Grain

scholarly journals Chromosomal anomalies that cause male sterility in the mouse also reduce ovary size

1984 ◽  
Vol 44 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Ursula Mittwoch ◽  
Shantha Mahadevaiah ◽  
Leslie A. Setterfield
Keyword(s):  
Male Sterility ◽  
Germ Cells ◽  
Reciprocal Translocation ◽  
Chromosomal Anomalies ◽  
Male Sterile ◽  
Chromosome Anomalies ◽  
Ovarian Size ◽  
Males And Females ◽  
The Difference ◽  
Ovarian Involvement

SUMMARYTwo male-sterile chromosome anomalies, the insertion Is(7; 1)40H and the tertiary trisomy, Ts(512)31H, were found to be associated with reduced ovarian volumes in immature females. Together with the reciprocal translocation, T(11; 19)42H, in which this effect was described previously, reduced ovaries have been found in all three male-sterile chromosome anomalies investigated so far, suggesting that ovarian involvement is likely to be common in these conditions. Assuming that the smaller ovarian size reflects a reduction in the number of oocytes, it is suggested that male-sterile chromosome anomalies may exert basically similar deleterious effects on meiotic germ cells in males and females, the difference in outcome being due to cell-physiological differences between spermatocytes and oocytes and to the small number of surviving oocytes required for fertility in females.

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