International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 9, Issue:6, June, 2020

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(6): 2968-2981

Performance and Stability of Different Zone Specific Genotypes Evaluated against Spot Blotch of Wheat
Sunita Mahapatra1*, Hizam Meronbala Devi1, Satish Kumar3, Dhiman Mukherjee2 and Srikanta Das1
1Department of Plant Pathology,
2In-Charge, AICRP Wheat, Agronomist,
Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia.741252, India

3Crop Improvement Division, ICAR-Indian Institute of Wheat and Barley Research, Karnal- 132001, India
*Corresponding author

A total of 117 wheat genotypes from different zones of India i.e.35 from NEPZ, 34 from CZ, 29 from NWPZ and 19 from PZ were screened for resistance against spot blotch of wheat for three consecutive years (2015-16, 2016-17 and 2017-18) at disease hot spot location, Kalyani, to find out the most suitable varieties for cultivation for this zone. These genotypes were also tested for their stability on disease reactions obtained during three years of testing. The overall analysis of pooled data showed that the genotypes and environment significantly affected the reactions to spot blotch and variation in disease severity was noticed among genotypes and across the environments. The genotype environment interaction was also highly significant for disease severity. This indicated that the spot blotch disease severity in the genotypes has divergent linear responses to environmental changes. Deviation from linear regression has contributed substantially towards differences in stability of disease reactions on genotypes. It was found that both predictable (linear) and unpredictable (non-linear) components contributed to the differences in stability of disease reaction (resistance, moderately resistant/ tolerant) among genotypes. Based on the disease tolerance reaction, out of the 117 tested genotypes, K8027, C306 and Raj4240 from NEPZ; HI8730(d), HI8726(d), MP1259, GW1280(d) and HI1500 from CZ; PBW665 from NWPZ and HI8728(d), HI8725(d), MACS6222, NIDW295(d) and AKAW4731 from PZ could be used to develop improved genotypes with spot blotch resistance which are suitable for Indo-Gangetic plains of India.

Keywords: Spot blotch, Stability, Disease severity, Disease resistance, Wheat genotypes

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How to cite this article:

Sunita Mahapatra, Hizam Meronbala Devi, Satish Kumar, Dhiman Mukherjee and Srikanta Das. 2020. Performance and Stability of Different Zone Specific Genotypes Evaluated against Spot Blotch of Wheat.Int.J.Curr.Microbiol.App.Sci. 9(6): 2968-2981. doi:
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