Skip to main content
ARS Home » Research » Publications at this Location » Publication #107093
Title: FIELD REACTION OF SELECTED RUNNER PEANUT GENOTYPES TO SOUTHERN BLIGHT

Author
item BESLER, B - TEXAS AG EXP STN
item Melouk, Hassan
item GRICHAR, W - TEXAS AG EXP STN

Submitted to: American Peanut Research and Education Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 7/13/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Eight peanut genotypes (Florunner, Okrun, Georgia Greene, MDR-98, Southern Runner, TX901338-2, Tamrun 98, and Tamrun 96) were replicated 4 times in a randomized complete block design at the Texas Agricultural Experiment Station at Yoakum in 1997 and 1998. Each plot consisted of two 8-m rows spaced at 0.91 m. Sclerotial density of Sclerotium rolfsii was about 3/225 g of soil (Tremona loamy fine sand) for both years. Disease loci were counted following inversion of plots. There was no year by genotype interaction for disease. A significant (p=0.05) rank correlation coefficient of 0.81 was obtained for disease incidence of Southern blight between 1997 and 1998. The average incidence of Southern blight over the two years for Okrun, Florunner, Tamrun 98, Georgia Greene, Southern Runner, Tamrun 96, MDR-98, and TX901338-2 was 20.6, 16.6, 16.0, 15.5, 13.5, 13.1, 10.6, and 10.5, respectively, with a LSD0.05 of 2.5. Yield was taken in 1997, but not in 1998 due to excessive rainfall (50 cm) after digging, which ruined all plots. The genotype TX901338-2 yielded higher than all other genotypes, followed closely by Tamrun 96. Both Okrun and Florunner were the lowest yielding genotypes.