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Prabhavathi
India
Researcher / Breeder
Seeking a challenging and dynamic position where I can use my practical skills and expand my expertise in the field of Genetics and Plant Breeding
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EDUCATIONAL PROFILE
Ph. D.
Department of Genetics and Plant Breeding, College of Agriculture, Acharya N G Ranga Agricultural University, Hyderabad, Andhra Pradesh, India
Date of graduation: June 2001
OGPA: 8.96/10.0
Thesis Title
Genetic studies on development and evaluation of inter sub-specific (indica and tropical japonica) hybrids of rice (Oryza sativa L.)
Guides
i. Dr. T. Nageswara Rao, Professor & Head, Department of Genetics and Plant Breeding, College of Agriculture, ANGRAU, Hyderabad
ii. Dr. B.C. Viraktamath, Head, Division of Crop Improvement, Directorate of Rice Research, Hyderabad
Brief Abstract
The study was carried out in three separate experiments during 1997-99 for studying the compatibility between different indica/japonica and indica/tropical japonica varieties, the heterotic performance of F1 hybrid combinations, F2 segregation analysis, genetics of wide compatibility trait along with morphological markers like apiculus pigmentation, and to assess the cooking quality characteristics of the inter sub-specific hybrids.
Based on the results of experiments it could be summarized as follows:
i. The level of heterosis observed in certain inter sub-specific hybrids is very high compared to parents and checks. Hence, it is possible to develop heterotic hybrid combinations through inter sub-specific hybridization. However, most of the hybrids studied, exhibited negative heterosis for yield and yield components. This may be due to the lack of high level of compatibility between the parents. This suggests the need to select the parents with broad spectrum compatibility is order to develop superior hybrid combinations.
ii. The segregation of spikelet fertility in F2 generation of five selected cross is not in agreement with 3: 1 ratio, indicating the complex nature of wide compatibility trait. The F2 plants segregated 3 violet: 1 colourless for apiculus colour, showing the monogenic inheritance.
iii. Better quality of the inter sub-specific hybrids was also observed with long slender grain type, intermediate amylose content and gelatinization temperature.
iv. Among the 28 hybrids studied, the hybrid IR-64446/IR-36 was found to be superior because of its better yield performance and grain quality.
v. These studies clearly indicated that there is wide scope to exploit the phenomenon of heterosis through inter sub-specific hybrids. This can be achieved either by three line or two line approach.
vi. The genetics of wide compatibility trait can be studied thoroughly by using biochemical and molecular techniques.
M. Sc. (Ag.)
Department of Genetics and Plant Breeding, Agriculture College, Acharya N G Ranga Agricultural University, then called Andhra Pradesh Agricultural University, Bapatla, Andhra Pradesh, India
Date of graduation: 1995
OGPA: 8.5/10.0
Thesis Title
Induction of male sterility by gametocides and heterosis studies in rice (Oryza sativa L.)
Guides
Dr. (Late) Krishna Murthy, Assoc. Prof. Department of Genetics and Plant Breeding
B. Sc. (Ag.)
Agricultural College, Acharya N G Ranga Agricultural University, then called Andhra Pradesh Agricultural University, Bapatla, Andhra Pradesh, India
Date of graduation: 1993
OGPA: 8.4/10.0
PROFESSIONAL EXPERIENCE
i. Research Associate in FAO-UNDP project “Development and promotion of hybrids in selected crops: Hybrid Rice”, Agricultural Research Station (ANGRAU), Maruteru. January 1995 to January 1996
Research activities: Maintenance of source nurseries, Hybrid rice seed production and evaluation of various rice hybrids under All India Coordinated Research Program.
ii. Research Associate (NATP-Plant Biodiversity), Indian Institute of Vegetable Research, Varanasi. December 1991 to January 1992
Research activities: Germplasm exploration, collection, cataloguing, field and in vitro maintenance; development of haploid in eggplant and tomato
iii. Senior Research Fellow (NATP-Development of suitable parental lines and hybrids for better quality characteristics in rice), Hybrid Rice Division, Directorate of Rice Research, Hyderabad.
FIELD EXPERIENCE
• Emasculation and pollination (hybridization) of rice and vegetables
• Maintenance of source, back cross, maintainer and male sterile (EGMS) nurseries in rice
• Identification and maintenance of TGMS and PGMS lines in rice
• Hybrid seed production techniques in rice and vegetables
• Assistant to research personnel in rice and vegetable breeding programs
• Field growing, cataloguing and evaluation of vegetable germplasm
LABORATORY SKILLS
• Screening, isolation and maintenance of pure germplasm cultures
• Development of haploids & screening of haploids by genetic tools and microscopy
• Anther culture, embryo rescue, micropropagation & transformation techniques
• Callus development, regeneration and genetic transformation with Agrobacterium
• Biochemical analysis of seeds / plant parts for proteins, carbohydrates, oils, enzymes, amylose content, gelatinization temperature, l/b ratio and other cooking quality characters of rice etc.
• Polymerase Chain Reaction (PCR), & Polyacrylamide and Agarose gel Electrophoresis,
TRAININGS UNDERWENT
Orientation course on “Development of Vegetable Hybrids”, 29th to 31st July 2002, Indian Institute of Vegetable Research, Varanasi, India
PROFESSIONAL MEMBERSHIPS
• Indian Society of Genetics and Plant Breeding
ACADEMIC DISTINCTIONS
• National Merit Scholarships during SSC, Intermediate and B. Sc. (Ag.) Studies
• APAU-Post Graduate Fellowship during M. Sc. (Ag.) Study
• Coveted CSIR-Senior Research Fellowship during Ph.D. Study
PUBLISHED RESEARCH ARTICLES
• Sanjeev Kumar, Major Singh, Prabhavathi K. and Amit Mathews. (2003). In vitro induction of haploid in eggplant (Solanum melongena l.). Capsicum and Eggplant Newsletter, 22:147-150
• Prabhavathi, K., T. N. Rao, B. C. Viraktamath and Rao, R.G.S. (2005). Yield and wide compatibility characteristics in inter sub-specific rice (Oryza sativa L.) hybrids, Plant Archives. 4 (2): 255-265.
• Prabhavathi, K. T. N. Rao, B. C. Viraktamath and Rao, R.G.S. (2005). Inheritance of wide incompatibility in indica-tropical japonica rice (Oryza sativa L.) hybrids. Annals of Agri-Bio Research. 21(1): 51-55.
AT SEMINARS/SYMPOSIA
• Prabhavathi K, Viraktamath, B.C., T.N Rao, Ilyas Ahmad, M. and R.G. S. Rao. (2002). Genetic analysis of inter sub-specific (indica / japonica) rice hybrids. International Rice Congress, Sept’ 2002, Beijing, China.
• Prabhavathi K, T. N. Rao and R.G.S. Rao (2002). Characterization of inter sub-specific (indica/ japonica) rice hybrids by isozyme electrophoresis. Presented in XI National Seed Seminar, UAS, Dharwad, 18-20 January 2002.
• Prabhavathi K, Viraktamath, B.C. and R.G. S. Rao. (2003). Poor grain plumpiness in indica / japonica rice hybrids. 2nd International Congress for Plant Physiology, Jan’ 2003, New Delhi, India.
COMMUNICATED
• Prabhavathi, K. Rao, R.G.S and T. N. Rao. Identification of indica-japonica rice (Oryza sativa L.) hybrids using biochemical markers. Indian Journal of Genetics and Plant Breeding, New Delhi, India.
• Prabhavathi, K. T. N. Rao, B. C. Viraktamath and Rao, R. G. S. Inheritance of grain quality in indica-tropical japonica rice hybrids. Oryza, Cuttack, India.
REFERENCES
Dr. E.A. SIDDIQ,
Ex- DDG - Crop Science (ICAR)
Dept of Biotechnology, ANGRAU
ARI campus, Rajendranagar, Hyderabad, India
Phone: 040-25500034(O)
Fax: 040-24015382
Email: easiddiq@rediffmail.com (or) easiddiq@operamail.com
Dr. ILYAS AHMAD
Principal Scientist (Hybrid Rice)
Directorate of Rice Research
Rajendranagar, Hyderabad 500 030, India
Phone: 040-24015036 to 39 (Extn. 248) (W); 040-23590504(R),
Fax: 040-24015308
Email: ilyas9000@yahoo.com
Dr. R. VIJAYA KUMAR
Sr. Breeder, Hybrid Rice,
Shri Ram Bioseed Research India Pvt. Ltd.,
Plot No. 206, Road No. 14, Jubilee Hills,
Hyderabad 500 033
Phone: 040-23555801 to 805 (O), 0984742785 (Mobile)
Fax: +91-40-23555530
Email: info@shrirambioseed.com
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