Pathology

Research

  1. Identification of sources of resistance to major maize diseases like PFSR, Polysora rust, Turcicum leaf blight.
  2. Development of integrated management schedule for PFSR and mycotoxin management in stored maize grains.
  3. Identification of resistance sources and development of resistant line for PFSR, TLB and Polysora rust resistance under breeding programme.

Achievements:

  • Eight resistant lines for Post Flowering Stalk Rots from diverse genetic background were identified, developed and evaluated at four identified hot spot location (Hyderabad, Delhi, Udaipur & Ludhiana)
  • Two inbred lines resistant for PFSR were registered with NBPGR and rest is in pipeline.
    • DMR- PFSR -1 (IC0590094/INGR11041)
    • DMR - PFSR-9 (IC0590095/INGR11042)
  • Study of pathogenic variability on M. phaseolina and F. verticilloides was done on a set of four inbred lines in controlled condition (under polyhouse).
  • Isolate of Fusarium from Udaipur (Kavita and Mannar) were comparatively more virulent than the rest 10 isolates tested.
  • Out of seven isolates from different agro climatic condition of India Hyderabad isolate (Amberpet) of M. phaseolina was found more virulent than the rest isolates.
  • Trichoderma harzianum isolated from maize grain is most effective in minimizing AFB1 build up (0.075 ppb) followed by Potassium Carbonate (0.129 ppb) As compared to check sample (inoculated with A. flavus).
  • Among 26 genotypes X1280, HQPM 1, Navjot & Prakash exhibited better in storability during nine months storage by showing as maximum germination percent is (50-70%) as compared rest genotypes.
  • Quality parameters viz; 100 kernel wt, Specific gravity, Starch %, Oil, and sugar exhibited a decreasing trend while total protein increased during nine months storage.
  • Fourteen genotypes were promising by exhibiting <2.00ppb AFB1, some of them are JH-31292 (0.0562); MCH-42 (0.046): NMH-920 (0.016): KMH-3670 (0.012): NMH-803 (0.0511) PMH-1(0.0639)
  • HM 4 & HQPM 5 exhibited susceptibility by showing high conc. of AFB1 (87.99 & 202.09 ppb) in 6 months storage period.
  • Lab Facilities/ Infrastructure – Sophisticated instruments – Equipments

    • Elisa Reader
    • HPLC
    • Cooling Centrifuge
    • Electrophoresis
    • Flurometer
    • Gel Documentation System
    • Research Microscope (phase contrast, flourscence & light)
    • Microscope (phase contrast, flourscence & light

    In-house projects:

    • Post harvest management of losses due to microbial colonization in stored maize grains
    • Identification of Stable Sources of Resistance to Major Diseases of Maize
    • Studies of host- Pathogen interaction between M. phaseolina & F. moniliforme (stalk rot pathogens) in maize and Identification of sources of resistance against Post Flowering Stalk Rots of maize