scholarly journals Segregation Ratios of Tungro Virus Resistance on F2 Progenies Derived from Utri Merah and ARC12596

2020 ◽  
Vol 12 (2) ◽  
pp. 124-129
Author(s):  
Ema Komalasari ◽  
Fitri Widiantini ◽  
Santika Sari ◽  
Nono Carsono
Keyword(s):  
Virus Resistance ◽  
Segregation Ratios

Tospovirus-Resistant Tomato Varieties for Southern Florida

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Rebecca L. Wente ◽  
Samuel F. Hutton ◽  
Scott Adkins ◽  
William Turechek ◽  
Joseph E. Funderburk
Keyword(s):  
Virus Resistance ◽  
Commercial Production ◽  
Dade County ◽  
Resistant Varieties ◽  
And Performance ◽  
Southern Florida

Authors describe performance of Tospovirus-resistant tomato varieties under commercial production settings in Dade County, FL. Virus resistance has become important for this area since the emergence of two new tomato-infecting tospoviruses. Knowledge of availability and performance of resistant varieties will help growers who are looking for alternative varieties.

Enhanced virus resistance of transgenic mice expressing the human MxA protein.

1995 ◽  
Vol 69 (7) ◽  
pp. 4506-4510 ◽  
Author(s):  
J Pavlovic ◽  
H A Arzet ◽  
H P Hefti ◽  
M Frese ◽  
D Rost ◽  
...  
Keyword(s):  
Transgenic Mice ◽  
Virus Resistance

Secondary Tetrasomic Segregation of MDH-B and Preferential Pairing of Homeologues in Rainbow Trout

Genetics ◽  
1997 ◽  
Vol 145 (4) ◽  
pp. 1083-1092 ◽  
Author(s):  
Fred W Allendorf ◽  
Roy G Danzmann
Keyword(s):  
Allelic Variation ◽  
Male Meiosis ◽  
Proximal Region ◽  
Stage Model ◽  
Preferential Pairing ◽  
Homologous Chromosomes ◽  
Tetrasomic Inheritance ◽  
Segregation Ratios ◽  
Homeologous Chromosomes ◽  
Duplicated Loci

We examined the inheritance of allelic variation at an isozyme locus, MDH-B, duplicated by ancestral polyploidy in salmonid fishes. We detected only disomic segregation in females. Segregation ratios in males were best explained by a mixture of disomic and tetrasomic inheritance. We propose a two-stage model of pairing in male meiosis in which, first, homologous chromosomes pair and recombine in the proximal region of the chromosome. Next, homeologous chromosomes pair and recombine distally. We suggest that this type of tetrasomic inheritance in which centromeres segregate disomically should be referred to as “secondary tetrasomy” to distinguish it from tetrasomy involving entire chromosomes (i.e., “primary tetrasomy”). Differences in segregation ratios between males indicate differences between individuals in the amount of recombination between homeologous chromosomes. We also consider the implication of these results for estimation of allele frequencies at duplicated loci in salmonid populations.

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