+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Reaction of two maize synthetics to anthracnose stalk rot and northern corn leaf blight following recurrent selection for resistance to Diplodia stalk rot and European corn borer

, : Reaction of two maize synthetics to anthracnose stalk rot and northern corn leaf blight following recurrent selection for resistance to Diplodia stalk rot and European corn borer. Phytopathology 79(2): 166-169

Two maize (Zea mays) synthetics, BSAA and BSBB, were recurrently selected for resistance to Diplodia (Diplodia maydis) stalk rot (DSR) and leaf feeding caused by the first-generation European corn borer (Ostrinia nubilalis) (ECB), based on the reaction of S1 lines to artificial inoculations of D. maydis and artificial infestations of the ECB. This study was conducted to determine if plant factors contributing to DSR and ECB resistance also conferred resistance to anthracnose stalk rot (ASR) caused by Colletotrichum graminicola and northern corn leaf blight (NLB) caused by Exserohilum turcicum. Highly significant linear improvements in ASR resistance were observed over cycles (C0 to C4) of selection in both synthetics. These improvements mirrored the gains reported previously for DSR resistance in BSAA and BSBB and suggested that a genetic correlation exists between DSR resistance and ASR resistance in these populations. NLB severity ratings were recorded on six dates throughout the growing season. A natural logarithm transformation was used to describe the disease progress curve for each of the C0 to C4 populations of each synthetic. Linear regression of lnNLB ratings on lnDATE (days after inoculation) accounted for more than 97% of the variation among entries when averaged over replications. Our results showed no concomitant improvement in NLB resistance over cycles of selection for ECB resistance, contradicting previous reports that 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3-one (DIMBOA), a know biochemical factor in leaf-feeding resistance, confers resistance to NLB.


Other references

Huis In't Veld, J.H.J., 1993: New emerging pathogenic microorganisms in the food chain. Mededelingen Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen Universiteit Gent 58(4B): 1817-1836

Cheikhyoussef,A.; Pogori,N.; Tian,F.W.; Chen,W.; Zhang,H., 2008: Interaction of Bifidobacterium and yoghurt mixed culture with Salmonella during associated cultures growth. The antimicrobial activity of four strains of <i>Bifidobacterium</i> toward <i>Salmonella</i> ssp. during associated cultures growth was investigated in skim milk medium. All strains showed different degrees of antagonistic...

Anonymous, 1999: List of drug products that have been withdrawn or removed from the market for reasons of safety or effectiveness. Food and Drug Administration, HHS. Final rule. The Food and Drug Administration (FDA) is amending its regulations to include a list of drug products that may not be used for pharmacy compounding under the exemptions under section 503A of the Federal Food, Drug, and Cosmetic Act (the act) becau...

Bell, S.S.; Coen, L.D., 1982: Investigations on epi benthic meio fauna 1. abundances on and re population of the tube caps of diopatra cuprea polychaeta onuphidae in a subtropical system. Cryptic meiofauna populated the imbricate, shell-sediment matrix of the tube-caps produced by the polychaete D. cuprea (Bose) in Tampa Bay, Florida, USA. Nematodes, copepods (adults and nauplii), polychaetes (adults and juveniles) and amphipods (a...

Coddington A.; Matthews P.M.; Cullis C.; Smith K.H., 1987: Restriction digest patterns of total dna from different races of fusarium oxysporum f sp pisi an improved method for race classification. Seven isolates of Fusarium oxysporum f. sp. pisi were allocated to either race 2 or race 6 by their ability or inability to cause disease on the six host [pea, Pisum sativum] differentials New Season, New Era, Dark Skin Perfection, WSU 28, WSU 23,...

Benezra, N., 1987: Special report--Part II. New ventures multiply for hospitals and their labs. Mlo: Medical Laboratory Observer 19(5): 33-35

Mawson, C., 2017: Interpretation as Freud's specific action, and Bion's container-contained. This is a paper showing how a concept central to the work of Wilfred Bion, and one of Klein's important recommendations concerning the practice of analysis with adults and small children, can both be seen in the light of Freud's earliest...

Nikiforov, A.M.; Cheprasov, V.Iu.; Shamova, N.S.; Shamov, V.A., 1999: The late-period characteristics of the bioelectrical activity of the brain in participants in the cleanup of the aftermath of the accident at the Chernobyl Atomic Electric Power Station. Fiziologiia Cheloveka 24(6): 48-55

Streichenberg C.; Waser P.F., 1986: Pharmacokinetics of obidoxime chloride a potential reactivator of alkylphosphate inhibited acetylcholinesterase. Experientia (Basel) 42(6): 702

Baer, L.; Jenike, M.A.; Black, D.W.; Treece, C.; Rosenfeld, R.; Greist, J., 1992: Effect of axis II diagnoses on treatment outcome with clomipramine in 55 patients with obsessive-compulsive disorder. We used the Structured Interview for DSM-III Personality Disorders to diagnose DSM-III personality disorders systematically in 55 patients with obsessive-compulsive disorder in the active-treatment cell of a controlled trial of clomipramine hydroc...