Assessment of Drought Resistance of Setaria italica Varieties
GAO Ru-yong
SHI Li-ran
CUI Xing-guo
LI Ming-zhe
Abstract：In order to study the drought resistance of 12 Setaria italica varieties in Heilonggang area ,the germination percentage ,germination index ,and root length ,shoot height ,fresh weight , vigor index were measured under the simulated drought conditions with PEG-6000 (10% ,15%and 20% ) ,and the ability of drought resistance was comprehensively evaluated using the fuzzy subordinate function .The results showed that the six indicators measured all declined in the three drought-sress treatments ,and the inhibition effect was enhanced as the PEG concentration in-creased .With regard to the three drought treatments (10% ,15% ,20% ) ,the inhibition rate was , respectively ,4% ,11% and 26% for germination percentage ,12% ,24% and 44% for germination index ,21% ,44% and 61% for root length ,8% ,19% and 39% for shoot height ,22% ,34% and 51% for fresh weight ,and 31% ,50% and 73% for vigor index .The drought stress mainly inf-luenced the germination rate and the robust degree of seedlings .Chigu16 was a high drought-re-sistant variety .Jingu31 ,Jigu19 ,Yugu 1 ,Jingu 51 ,Longgu 27 ,Jingu 52 ,Henggu 0902 and Longgu 11 belonged to medium drought-resistant varieties .Henggu 10 and Changnong 38 were weak drought-resistant varieties ,while Jingu 46 was a drought-sensitive variety .
Keywords：Setaria italicadrought resistanceseed germinnationseedling growthfuzzy sub-ordinate function
Publication Date：2013-12-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 28-32 )