scholarly journals Leaf Surface Fungi of Early Blight [Alternaria solani (Ellis and Martin)] Infected and Non-Infected Leaves of Tomato [Solanum lycopersicum (L.)]

2019 ◽  
Vol 8 (07) ◽  
pp. 521-529
Author(s):  
M. Hajong ◽  
T. Rajesh ◽  
R.K. Tombisana Devi ◽  
D. Thakuria ◽  
M. Rai ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Early Blight ◽  
Leaf Surface ◽  
Alternaria Solani ◽  
Solanum Lycopersicum L

Exogenous hexanoic acid induced primary defense responses in tomato (Solanum lycopersicum L.) plants infected with Alternaria solani

2022 ◽  
Vol 295 ◽  
pp. 110841
Author(s):  
Zahra Rabiei ◽  
Siavosh Hosseini ◽  
Ali Dehestani ◽  
Hemmatollah Pirdashti ◽  
Farid Beiki
Keyword(s):  
Solanum Lycopersicum ◽  
Alternaria Solani ◽  
Defense Responses ◽  
Hexanoic Acid ◽  
Solanum Lycopersicum L

scholarly journals QTL identification for early blight resistance (Alternaria solani) in a Solanum lycopersicum × S. arcanum cross

2006 ◽  
Vol 114 (3) ◽  
pp. 439-450 ◽  
Author(s):  
R. Chaerani ◽  
M. J. M. Smulders ◽  
C. G. van der Linden ◽  
B. Vosman ◽  
P. Stam ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Early Blight ◽  
Alternaria Solani ◽  
Blight Resistance ◽  
Qtl Identification

scholarly journals Impact of Alternaria solani (Early blight) on cultivated tomato (Solanum lycopersicum L.) in North-eastern region of India and identification of early blight disease resistant tomato genotypes

2015 ◽  
Vol 7 (2) ◽  
pp. 672-680
Author(s):  
Khaidem Malemnganba Meitei ◽  
G.C. Bora ◽  
Senjam Jinus Singh ◽  
Anjan Kumar Sinha
Keyword(s):  
Solanum Lycopersicum ◽  
Early Blight ◽  
Disease Incidence ◽  
Fruit Weight ◽  
High Yield ◽  
Eastern Region ◽  
Solanum Lycopersicum L ◽  
North Eastern ◽  
Blight Disease ◽  
Tomato Genotypes

The present investigation was carried out to screen genotypes for resistance to Early blight disease of tomato (Solanum lycopersicum L.) of North Eastern region of India. Field trial was conducted in the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat during the years 2012-13 and 2013-14 consecutively. The disease severity of tomato genotypes was assessed by 0-5 points scale, percent Disease Incidence (PDI). Of the total materials screened, Sel-35 (TLBRH-6 X Konbilahi) and Sel-19 (TLBRH-6 X Konbilahi) were highly resistant, 7 were resistant, 14 were moderately resistant, 16 were susceptible and 6 were highly susceptible under field condition after inoculation during both years. The genotype having high yield and resistant to early blight was 10/TOLCVRES-3. The genotypes resistant to early blight but having low yield (Sel-35, Sel-19, Sel-9 and Sel-16) may be utilized in future breeding programme for improving yield through selection for higher fruit weight and fruit diameter. Alternatively, they may be used as parents in hybridization or backcrossing programme in order to transfer the gene for resistance to early blight to already adapted high yield varieties.

scholarly journals Segregation Analysis of SSR, SNP, and AFLP Markers in F2 Population of Solanum lycopersicum × S. arcanum (Analisis Segregasi Marka SSR, SNP, dan AFLP pada Populasi F2 Persilangan Solanum lycopersicum × S. arcanum)

2016 ◽  
Vol 11 (1) ◽  
pp. 1
Author(s):  
Chaerani Chaerani ◽  
R. E. Voorrips
Keyword(s):  
Solanum Lycopersicum ◽  
Frequency Distribution ◽  
Segregation Distortion ◽  
Early Blight ◽  
Interspecific Cross ◽  
Alternaria Solani ◽  
Genotype Frequency ◽  
Genotype Frequency Distribution ◽  
F2 Population ◽  
Zygotic Selection

<p>Distorted marker segregation is a common phenomenon in interspecific cross of various crops. Previous mapping study of early<br />blight fungus (Alternaria solani) resistance loci showed 52% marker distortion in the genetic linkage map of 176 F2 progenies<br />derived from Solanum lycopersicum cv. Solentos × S. arcanum LA2157. The objectives of this study were to analyze in detail the<br />marker segregation in the map and to determine the cause of segregation distortion by calculating the allele and genotype<br />frequencies of each marker. Out of 371 mapped markers, 192 markers deviated from the expected Mendelian ratio of 1 : 2 : 1.<br />Distorted markers occurred in all chromosomes, ranging from 1% to 92%. Surplus of S. arcanum homozygotes contributed most<br />to the skewness (40%), followed by heterozygotes (18%), and S. lycopersicum homozygotes (5%). The allele frequencies of 152<br />markers deviated from the expected allele homogeneity frequency, indicating that their segregation might be affected by<br />gamethophytic selection. Sixty-one markers deviated from the expected F2 genotype frequency distribution, indicating that their<br />segregation might be influenced by zygotic selection. Thirty-seven of the distorted markers showed deviation from expected<br />frequencies of allele homogeneity and F2 genotype frequency distribution. Distorted markers can be retained in linkage analysis<br />since chromosomal regions containing distorted markers showed linkage with early blight fungus resistance loci. Further<br />identification of the mechanism contributing segregation distortion requires detailed and extensive mapping studies.</p>

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