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in
| Title : |
Evaluation of rice genotypes for resistance to blast disease |
| Material Type: |
printed text |
| Authors: |
B. Chaudhary ; M Yadav, Author ; Yadaw, R.B., Author ; Chaudhary, D.K., Author ; PCP Chaurasiya, Author ; Chaudhary, R.N., Author ; B.N Mahato, Author ; Sah, D.N., Author |
| Pagination: |
327-335 p. |
| Languages : |
English (eng) |
| Keywords: |
Blast fungus ; rice genotypes sources of resistance pathogen variability |
| Abstract: |
exotic were evaluated for resistance to blast over four locations during 2002 and 2003,
respectively. Disease severity varied over locations and years. Within locations, genotypes
showed variation in disease severity. During 2002, 186 entries were resistant (R), 40
moderately resistant (MR.), 14 moderately susceptible {MS), 32 susceptible (S) to disease at
Hardinath. At Lumle, 69 entries scored R, 75 MR, 66 MS and 62 S to the disease. At Rampur,
174 entries rated R, 19 MR and 3 MS to the disease while 78 failed to germinate. At
Tarahara, 236 entries showed R, 6 MR and 30 entries did nopt germinate. During 2003, 148
entries showed R, 16 MR, 4 MS and 20 S to the disease at Hardinath. At Tarahara, all the
tested entries were resistant to disease, indicating escape from disease during the growing
season. At Khumaltar, 169 entries scored R, 59 MR, 29 MS and 8 S to disease. At Nawalpur,
217 entries rated R, 21 MR, 9 MS and 11 S to the disease. However, 39 and 123 lines were
resistant to the pathogen over locations during 2002 and 2003 tests, respectively. This
indicated that the genotypes varied for disease reaction over locations suggesting the
prevalence of variable virulence in the pathogen population. In neck blast screening, 11
genotypes out of 274 entries showed R to MR to the disease over Hardinath and Rampur
during 2002 test. In 2003, 132 genotypes were R to MR to the disease at Hardinath. Blast
nursery also included 166 entries received from International Rice Research Institute in
2002. Of them, 60 entries were found resistant to the disease over Hardinath and Rampur. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=1119 |
in
Evaluation of rice genotypes for resistance to blast disease [printed text] / B. Chaudhary ; M Yadav, Author ; Yadaw, R.B., Author ; Chaudhary, D.K., Author ; PCP Chaurasiya, Author ; Chaudhary, R.N., Author ; B.N Mahato, Author ; Sah, D.N., Author . - [s.d.] . - 327-335 p. Languages : English ( eng) | Keywords: |
Blast fungus ; rice genotypes sources of resistance pathogen variability |
| Abstract: |
exotic were evaluated for resistance to blast over four locations during 2002 and 2003,
respectively. Disease severity varied over locations and years. Within locations, genotypes
showed variation in disease severity. During 2002, 186 entries were resistant (R), 40
moderately resistant (MR.), 14 moderately susceptible {MS), 32 susceptible (S) to disease at
Hardinath. At Lumle, 69 entries scored R, 75 MR, 66 MS and 62 S to the disease. At Rampur,
174 entries rated R, 19 MR and 3 MS to the disease while 78 failed to germinate. At
Tarahara, 236 entries showed R, 6 MR and 30 entries did nopt germinate. During 2003, 148
entries showed R, 16 MR, 4 MS and 20 S to the disease at Hardinath. At Tarahara, all the
tested entries were resistant to disease, indicating escape from disease during the growing
season. At Khumaltar, 169 entries scored R, 59 MR, 29 MS and 8 S to disease. At Nawalpur,
217 entries rated R, 21 MR, 9 MS and 11 S to the disease. However, 39 and 123 lines were
resistant to the pathogen over locations during 2002 and 2003 tests, respectively. This
indicated that the genotypes varied for disease reaction over locations suggesting the
prevalence of variable virulence in the pathogen population. In neck blast screening, 11
genotypes out of 274 entries showed R to MR to the disease over Hardinath and Rampur
during 2002 test. In 2003, 132 genotypes were R to MR to the disease at Hardinath. Blast
nursery also included 166 entries received from International Rice Research Institute in
2002. Of them, 60 entries were found resistant to the disease over Hardinath and Rampur. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=1119 |
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