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Studying the relationship between sesame fusarium and macrophomina incited damping-off with some other important traits measured in the field.

Document Type : Plant Pathology

Authors

1 Seed and Plant Improvment Insatitute, OilSeed Crop Research Department

2 Seed and Plant Improvment Institute, OilSeed Crop Department

3 Seed and Plant Improvment Institute, OilSeeed Crop Research Department

Abstract

T
The fungi, Macrophomina  phaseolina  and Fusarium oxysporum are the main causal agents of sesame wilt making a great loss in Iran and worldwide. In this research, 25 cultivars and genotypes of sesame including 14 yield comparison test lines, four improved lines and six commercial cultivars (Dashtestan2, Darab1, Halil, Naz-uniculm and Naz branched grew in 3 replicates in randomized complete blocks in a hotspot field in 400-ha farm of Seed and Plant Improvement Institute (SPII) in Karaj. Each genotype was cultivated in two meters length. Disease scores were recorded at the maturity stage. The results showed that all genotypes were affected by disease to some extent among which Dashtestan 2 had the highest mean of disease score. The lines 92-10 and 90-10 with the lowest record of wilting (less than 20%) were grouped as resistant lines. Correlation analysis between five important agronomic traits related to yield with wilt disease data showed that damping-off data has a significant correlation with the number of seeds per capsule. Although a significant correlation was observed between wilting with capsule length, the coefficient was low. There was a non-significant correlation between wilt disease and 1000 seed weight, SPAD no. and capsule weight without seeds.
 

Keywords

References
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Applied Entomology and Phytopathology
Volume 88, Issue 2 - Serial Number 111
March 2021
Pages 175-185
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