Tomato chromosome 6: effect of alien chromosomal segments on recombinant frequencies

Genome ◽  
1996 ◽  
Vol 39 (3) ◽  
pp. 485-491 ◽  
Author(s):  
Tsvetana Liharska ◽  
Monique van Wordragen ◽  
Ab van Kammen ◽  
Pim Zabel ◽  
Maarten Koornneef
Keyword(s):  
Molecular Markers ◽  
Lycopersicon Esculentum ◽  
Key Words ◽  
Wild Species ◽  
Chromosome 6 ◽  
Morphological Markers ◽  
Additional Information ◽  
Lycopersicon Esculentum Mill ◽  
Recombinant Frequency ◽  
Tomato Chromosome

Variation in recombinant frequencies at two adjacent intervals on chromosome 6 of tomato (Lycopersicon esculentum Mill.) has been studied in seven lines that differ in the amount and origin of introgressed segments from wild species. These lines were all crossed to a genotype homozygous recessive for the markers tl, yv, and c, which define the centromere spanning region tl–yv and the long arm region yv–c. Recombinants were identified in large F2, populations consisting of over 30 000 plants in total. Application of molecular markers provided additional information on the distribution of crossover events within the centromere-containing interval tl–yv. A decrease in recombination at the marked intervals correlated with the presence of an alien segment. Suppression of recombination was up to sixfold in the centromere spanning interval tl–yv depending on the source and size of the introgression, and was restricted to the alien segments with no strong effect on the neighbouring intervals. Key words : recombinant frequency, Lycopersicon esculentum, morphological markers, introgressions, centromere.

scholarly journals Effects of Fosetyl-Al, a fungicide on meiosis of Lycopersicon esculentum Mill.

1970 ◽  
Vol 39 (2) ◽  
pp. 237-240 ◽  
Author(s):  
Ilkay Özturk Çali ◽  
Teoman Kesercioglu
Keyword(s):  
Lycopersicon Esculentum ◽  
Phytophthora Infestans ◽  
Key Words ◽  
Recommended Dosage ◽  
Tomato Plants ◽  
Lycopersicon Esculentum Mill

Effects of Fosetyl-Al (80% Aliette WG 800), widely applied on tomato plants (Lycopersicon esculentum Mill.) grown in greenhouse against Phytophthora infestans revealed that at recommended dosage (200 g/100 l water) and the double dosage (400 g/100 l water), the fungicide causes various anomalies in pollen meiosis. Key words: Fosetyl-A;, Fungicide; Lycopersicon esculentum; Meiosis; Pollens DOI: 10.3329/bjb.v39i2.7486 Bangladesh J. Bot. 39(2): 237-240, 2010 (December)

scholarly journals Integration of the classical and molecular linkage maps of tomato chromosome 6.

Genetics ◽  
1993 ◽  
Vol 135 (4) ◽  
pp. 1175-1186
Author(s):  
R Weide ◽  
M F van Wordragen ◽  
R K Lankhorst ◽  
R Verkerk ◽  
C Hanhart ◽  
...  
Keyword(s):  
Linkage Map ◽  
Rapd Markers ◽  
Linkage Data ◽  
Chromosome 6 ◽  
Morphological Markers ◽  
Limited Information ◽  
Tomato Genome ◽  
The Past ◽  
Molecular Linkage Map ◽  
Tomato Chromosome

Abstract In the past, a classical map of the tomato genome has been established that is based on linkage data from intraspecific Lycopersicon esculentum crosses. In addition, a high density molecular linkage map has recently been constructed using a L. esculentum x L. pennellii cross. As the respective maps only partially match, they provide limited information about the relative positions of classical and molecular markers. In this paper we describe the construction of an integrated linkage map of tomato chromosome 6 that shows the position of cDNA-, genomic DNA- and RAPD markers relative to 10 classical markers. Integration was achieved by using a L. esculentum line containing an introgressed chromosome 6 from L. pennellii in crosses to a variety of L. esculentum marker lines. In addition, an improved version of the classical linkage map is presented that is based on a combined analysis of new linkage data for 16 morphological markers and literature data. Unlike the classical map currently in use, the revised map reveals clustering of markers into three major groups around the yv, m-2 and c loci, respectively. Although crossing-over rates are clearly different when comparing intraspecific L. esculentum crosses with L. esculentum x L. pennellii crosses, the clusters of morphological markers on the classical map coincide with clusters of genomic- and cDNA-markers on the molecular map constructed by Tanksley and coworkers.

scholarly journals Accumulation of Proline in NaCl-treated Callus of Six Tomato (Lycopersicon esculentum Mill.) Cultivars

1970 ◽  
Vol 17 (2) ◽  
pp. 217-220 ◽  
Author(s):  
A.N. Mohamed ◽  
M.H. Rahman ◽  
A.A. Alsadon ◽  
R. Islam
Keyword(s):  
Lycopersicon Esculentum ◽  
Key Words ◽  
Plant Tissue ◽  
Lycopersicon Esculentum Mill

Abstract not available Key words: Lycopersicon escutentum, Callus, Proline D.O.I. 10.3329/ptcb.v17i2.3242 Plant Tissue Cult. & Biotech. 17(2): 217-220, 2007 (December)

scholarly journals Effects of a fungicide on pollen morphology and fertility of tomato (Lycopersicon esculentum Mill.)

1970 ◽  
Vol 38 (1) ◽  
pp. 7-11
Author(s):  
Ilkay Öztürk Çali
Keyword(s):  
Lycopersicon Esculentum ◽  
Key Words ◽  
Pollen Morphology ◽  
Alternaria Solani ◽  
Recommended Dose ◽  
Recommended Dosage ◽  
Lycopersicon Esculentum Mill

Effects of Equation Pro (22.5% Famoxadone + 30% Cymoxanil), a fungicide widely used on tomatoes (Lycopersicon esculentum Mill.) grown in greenhouses in Turkey against Phytopthora infestans and Alternaria solani, were studied on the morphology and fertility of tomato pollens. The fungicide was applied to tomatoes grown in pots in a greenhouse at recommended dosage (0.4 g/l water) and double the recommended dosage (0.8 g/l water). At the recommended dosage of Equation Pro, pollens were affected but at double the recommended dose, fertility is decreased to 41% with morphological deformity and thinner wall layers. Key words: Fungicide; Lycopersicon esculentum; Pollen; Morphology; Fertility DOI: 10.3329/bjb.v38i1.5112 Bangladesh J. Bot. 38(1): 7-11, 2009 (June)   

Action des basses températures nocturnes sur une collection variétale de tomate (Lycopersicon esculentum Mill.) II. - Etude de la quantité et de la qualité du pollen

Agronomie ◽  
1982 ◽  
Vol 2 (5) ◽  
pp. 453-458 ◽  
Author(s):  
Brigitte MAISONNEUVE ◽  
Jacqueline PHILOUZE ◽  
Maguy MILESI
Keyword(s):  
Lycopersicon Esculentum ◽  
Lycopersicon Esculentum Mill
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