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Paper Information

Journal:   IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE)   2007 , Volume 38 , Number 4; Page(s) 685 To 692.
 
Paper: 

SEXUAL FERTILITY AND MATING TYPES OF GIBBERELLA FUJIKUROI SPECIES, THE CAUSE OF RICE BAKANAE DISEASE AND FOOT ROT IN GUILAN REGION

 
 
Author(s):  ABBASZADEH MAHIA, JAVAN NIKKHAH M.*, PADASHT DEHKAEI F., MOUSANEZHAD S.
 
* FACULTY OF AGRICULTURE, UNIVERSITY OF TEHRAN, KARAJ, IRAN
 
Abstract: 
To study the sexual fertility and for a dermination of the mating types of the cause of rice bakanae disease and foot rot, samples of infected rice were collected from different regions of Guilan Province in during 2004.One hundred and thirty and three single-spore isolates were obtained from Khazar while nine isolates from local cultivars. Morphological identification was carried out employing the valid morphological identification keys. For fertility test, crosses were carried out among local isolates on Carrot Agar medium, four pairs of which resulted in fertile crosses. Sixty isolates were crossed with six standard isolates representing three mating populations and six mating types (MATA-1, MATA-2, MATC-1, MATC-2, MATD-1 and MATD-2). Of those isolates 23, 17, and 38% belonged to mating populations A, C and D, respectively. Aall, local isolates with fertile crosses were, included in mating population D. Furthermore, the ascosporous isolated from field perithecia, stood in mating population D. For pathogenicity test, 142 isolates were inoculated to Khazar seedlings nine of which showed no disease symptoms. The results of the study revealed that indicated three mating populations, A (F. verticillioides), C (F. fujikuroi), and D (F. proliferatum) are the cause of rice bakanae disease and foot rot in Guilan province, north of Iran Province.
 
Keyword(s): RICE, BAKANAE DISEASE AND FOOT ROT, GIBBERELLA FUJIKUROI SPECIES COMPLEX, MATING TYPES
 
References: 
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