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| Articles
by
Chinmayee Mohapatra |
Total Records (
1 ) for
Chinmayee Mohapatra |
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Mukesh Kumar Singh
,
Prakash Singh
,
Ravi P. Singh
and
Chinmayee Mohapatra
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Rice is mostly grown in the Asian subcontinent and known by its good cooking
qualities. Its production is, however, often constrained by several biotic factors.
The present study may be useful for the development of resistant lines against
the blast disease possess high yielding capacity. Thirty nine Indica
rice genotypes were used to study the extent of genetic parameter and association
analysis for quantitative and qualitative traits. These genotypes were screened
against blast disease of rice by artificial inoculation in field. All quantitative
and qualitative traits exhibited highly significant difference (p<0.01) among
treatments, it indicates the adequate genetic variability among the genotypes
under study. Estimates of genotypic and phenotypic coefficient of variation
were high for filled grains per plant, total grains per plant, panicle initiation
and Grain Yield per Plant (GYPP). Heritability was high (>80%) for all the
characters except head rice recovery, hulling percentage and kernel breadth;
indicates the roles of additive gene action and a good scope of selection using
their phenotypic performance. GYPP showed strong positive association with yield
contributing traits while non-significant association with rest of the traits.
In blast screening, none of the varieties and F1 hybrids found highly
resistant. Among the parental lines, Anjali was resistant, HUR3022, Vandana,
HUR105 and BPT5204 were moderately resistant and six lines were moderately to
highly susceptible. Among the hybrids, only two hybrids (AnjalixBPT 5204 and
AnnadaxBPT 5204) were found resistant to rice blast disease. |
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