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Table 1 Generalized Standard Evaluation System for rice (SES)

From: Preferential Geographic Distribution Pattern of Abiotic Stress Tolerant Rice

SES scorea General Descriptionb and Desirability Cold Stress at Seedling Stagec Tolerancea
0 Absence of visible symptoms or injury no damage to leaves, normal leaf color Highly tolerant
1 Potential donor of the trait
2 Trait expression is satisfactory tip of leaves slightly dried, folded, and light green Tolerant
3 Potential donor of the trait
4 Trait expression is not as good as it should be, but may be acceptable under some circumstances intermediate Intermediate
6 leaves of seedlings are severely rolled and dried Sensitive
7 Trait expression is unsatisfactory (not useful)
8 the majority of the seedlings died and dried Highly sensitive
  1. aAlthough SES scoring is a 10 division (0-9) visual or pictorial scoring system; however, for some traits, human eye cannot easily differentiate between 10 divisions, then only five (1, 3, 5, 7, 9) or three (1, 5, 9) digits are used (IRRI 2013). In this review, generally we considered SES 1-3, 4-6, 7-9 as tolerant, intermediate, sensitive, respectively
  2. bSpecific description depends on the stress, severity, growth stage of the plants etc.
  3. cMost rice scientists, especially rice breeders are familiar with SES scoring, however, those unfamiliar can simply understand the interpretation of generalized SES scoring system with the specific SES scoring examples of cold stress at seedling stage