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Fertility Status of Magnaporthe Grisea Populations from Finger Millet


Affiliations
1 Dept. of Plant Pathol., G.B.P.U.A &T Pantnagar , U.S. Nagar, Uttarakhand- 263 145, India
2 Dept. of Botany, H.N.B. Garhwal Univ., Srinagar (Garhwal) Uttarakhand-246 174, India
3 Dept. of Genet. & Plant Breeding, G.B.P.U.A &T Hill Campus Ranichauri, Tehri Garhwal Uttarakhand- 249 199, India
 

Two hundred twenty nine isolates of Magnaporthe grisea were collected from finger millet cultivars at 14 locations in north India (Uttarakhand) and two locations in south India (Tamilnadu&Karnataka). Each isolate was tested for the mating types (Male fertile and female sterile) using standard fertile testers. Per cent isolates that neither mated nor produced perithecia was high among isolates collected from south India than those from Uttarakhand. Male fertile and hermaphrodite isolates from cooler region showed greater efficiency to produce perithecia. Results revealed that distribution of mating type varied with geographical region. Male fertile and female sterile isolates segregated in 1:1 ratio among field isolates collected from both north and south India. Field isolates from north India showed equal probability of getting male fertile, female sterile and hermaphrodite isolates, which suggested that probability for sexual reproduction in the population of M. grisea existed in nature in the central Himalayas of India.

Keywords

Fertility, Magnaporthe Grisea, Perithecia
User

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  • Fertility Status of Magnaporthe Grisea Populations from Finger Millet

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Authors

R. K. Srivastava
Dept. of Plant Pathol., G.B.P.U.A &T Pantnagar , U.S. Nagar, Uttarakhand- 263 145, India
R. P. Bhatt
Dept. of Botany, H.N.B. Garhwal Univ., Srinagar (Garhwal) Uttarakhand-246 174, India
B. B. Bandyopadhyay
Dept. of Genet. & Plant Breeding, G.B.P.U.A &T Hill Campus Ranichauri, Tehri Garhwal Uttarakhand- 249 199, India
J. Kumar
Dept. of Plant Pathol., G.B.P.U.A &T Pantnagar , U.S. Nagar, Uttarakhand- 263 145, India

Abstract


Two hundred twenty nine isolates of Magnaporthe grisea were collected from finger millet cultivars at 14 locations in north India (Uttarakhand) and two locations in south India (Tamilnadu&Karnataka). Each isolate was tested for the mating types (Male fertile and female sterile) using standard fertile testers. Per cent isolates that neither mated nor produced perithecia was high among isolates collected from south India than those from Uttarakhand. Male fertile and hermaphrodite isolates from cooler region showed greater efficiency to produce perithecia. Results revealed that distribution of mating type varied with geographical region. Male fertile and female sterile isolates segregated in 1:1 ratio among field isolates collected from both north and south India. Field isolates from north India showed equal probability of getting male fertile, female sterile and hermaphrodite isolates, which suggested that probability for sexual reproduction in the population of M. grisea existed in nature in the central Himalayas of India.

Keywords


Fertility, Magnaporthe Grisea, Perithecia

References





DOI: https://doi.org/10.17485/ijst%2F2009%2Fv2i9%2F29520