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Laboratory and Field Studies For Some Characters Among The Isolates of The Fungi Sclerotinia Sclerotiorum on Eggplant Under Protected Agriculture Conditions In Salah Alden Governorate. | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 15, Issue 3, 2015, Pages 91-100 | ||
| Authors | ||
| Qais K.Zewin; Haydar A.Abdulbaqi | ||
| Abstract | ||
| The study included field scanning operation for the disease white mold caused by the fungus Sclerotinia sclerotiorum on eggplant in protected agriculture areas in Salah Aldeen governorate and collection of the fungi isolates to prepare it for labratory and field studies and studying some morphological characters of the fungi Sclerotinia sclerotiorum which included the average number of sclerotia , average weight of sclerotia after 20 days of inoculation and the average of sclerotial growth after 72 hrs . The pathogenicity experiment of Sclerotinia sclerotiorum isolates performed by sterile flowerbeds and studying the differences among isolates by the recorded infection severity and percent . The results indicated that the fungi Sclerotinia sclerotiorum founded and distributed in most areas in Salah Aldeen Governorate caused ecological loses and collection and purification of 8 isolates Ss1 , Ss2 , Ss3 , Ss4 , Ss5 , Ss6 , Ss7 , Ss8 which showed difference among them in morphological characters in Lab. The isolate Ss1 achieved higher number of sclerotia formation 29 sclerotia / petridish while the isolate Ss6 formed lower number of sclerotia 8 sclerotia /petridish . The isolate Ss7 achieved higher average weight of sclerotia 0.56 gm /petridish while the isolate Ss5 showed lower average weight of sclerotia 0.15 gm/ petridish. The isolates Ss6 ,Ss7 , Ss8 achieved in the growth of colony diameter 9cm while the isolates Ss4 , Ss5 lower growth of colony diameter 5cm . In pathogenicity experiment showed that all the isolates have the pathogenicity ability from the infection severity and infection percent recorded .The isolate Ss1 recorded higher average of infection severity 92.22% compared with the other isolates while the isolate Ss8 recorded lower average of infection severity 63.33%.The third week recorded higher average infection severity 79.81% while the first week is lower average infection severity 55.74% .The isolate Ss1 recorded higher infection percent 100% compared with other isolates while the isolate Ss8 recorded lower infection percent 75.88% and it was not differ with Ss7 . The third week recorded higher infection percent 83.11% while the first week recorded lower infection percent 70.11% . | ||
| Keywords | ||
| Isolates; fungus; Sclerotinia sclerotiorum; Egg Plant; protected agriculture | ||
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