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Table 1 Genetic analysis of Cf-19 disease resistance in different generations

From: Mapping and candidate gene screening of tomato Cladosporium fulvum-resistant gene Cf-19, based on high-throughput sequencing technology

Generation   No. of plants   Expected segregation ratio (R:S) χ2
Total Resistant (R) Susceptible (S)  
CGN18423 30 30 0   
Moneymaker 30 0 30   
F1 30 30 0   
F2 469 339 130 3:1 1.70
BC1 102 45 57 1:1 1.19
  1. χ2 0.05, 1 = 3.84