|
in
| Title : |
Evaluation of rice genotypes against bacterial leaf blight and blast |
| Material Type: |
printed text |
| Authors: |
Purushottam Jha ; Surya Narayan Sah, Author ; Ram Baran Yadaw, Author ; Ram Baran Yadav, Author ; Anand Mandal, Author ; Dev Kumar Saphi, Author |
| Pagination: |
281-291 p. |
| Languages : |
English (eng) |
| Keywords: |
BLB Resistant Moderately resistant ; Susceptible and highly susceptible |
| Abstract: |
A total of 354 rice lines in 2009 and 261 lines in 20 I 0 with a diverse genetic background were
evaluated for resistance to bacterial leaf blight over locations. Disease severity ranged from 0
to 9 in both the years. Bacterial leaf blight reactions in different genotypes were differed in
locations. During 2009, 263 genotypes were scored resistant (R) and 90 genotypes moderately
resistant (MR) and one susceptible at Parwanipur. Similarly, 244 genotypes were scored
resistant, 129 moderately resistant, one lines highly susceptible at Hardinath. Likewise, 193
genotypes scored resistant, Ill moderately resistant 39 were susceptible at Bhairahawa.
During 2010,107 genotypes scored resistant, 122 moderately resistant (MR), 33 lines
moderately susceptible (MS) and 2 lines susceptible at Hardinath. Similarly, in 20 I 0, 159
lines scored resistant, 50 moderately resistant (MR) and 23 moderately susceptible at
Parwanipur. This showed that there was prevalence of variable pathotypes over locations and
thus, genotypes need to be tested over locations to identify donor parents and resistant
genotypes for recommendation. Similarly, A total of 242 rice lines in 2009 and 261 lines in
20 I 0 with a diverse genetic background were evaluated for resistance to blast disease over
locations. Disease severity ranged from 0 to 9 in both the years. Blast reactions in genotypes
were differed in all locations. During 2009, 242 genotypes were scored immune, 27 resistant
(R) and 28 genotypes moderately resistant (MR), at Parwanipur. Similarly, 2 genotypes were
scored as 2 immune, 217 resistant, 9 moderately resistant, 7 highly susceptible at Nawalpur.
Likewise, genotypes were found as 78 resistant, 97 moderately resistant, 36 susceptible at
Hardinath. During 20 I 0, genotypes were found as 33resistant, 151 moderately resistant, 56
lines moderately susceptible (MS) and 9 lines susceptible at Hardinath. Similarly in 20 I 0, 261
lines scored resistant, I moderately resistant and 2 highly susceptible at Parwanipur. This
showed that there was prevalence of variable pathotypes over locations and thus, genotypes
need to be tested over locations to identify donor parents and resistant genotypes for
recommendation. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=913 |
in
Evaluation of rice genotypes against bacterial leaf blight and blast [printed text] / Purushottam Jha ; Surya Narayan Sah, Author ; Ram Baran Yadaw, Author ; Ram Baran Yadav, Author ; Anand Mandal, Author ; Dev Kumar Saphi, Author . - [s.d.] . - 281-291 p. Languages : English ( eng) | Keywords: |
BLB Resistant Moderately resistant ; Susceptible and highly susceptible |
| Abstract: |
A total of 354 rice lines in 2009 and 261 lines in 20 I 0 with a diverse genetic background were
evaluated for resistance to bacterial leaf blight over locations. Disease severity ranged from 0
to 9 in both the years. Bacterial leaf blight reactions in different genotypes were differed in
locations. During 2009, 263 genotypes were scored resistant (R) and 90 genotypes moderately
resistant (MR) and one susceptible at Parwanipur. Similarly, 244 genotypes were scored
resistant, 129 moderately resistant, one lines highly susceptible at Hardinath. Likewise, 193
genotypes scored resistant, Ill moderately resistant 39 were susceptible at Bhairahawa.
During 2010,107 genotypes scored resistant, 122 moderately resistant (MR), 33 lines
moderately susceptible (MS) and 2 lines susceptible at Hardinath. Similarly, in 20 I 0, 159
lines scored resistant, 50 moderately resistant (MR) and 23 moderately susceptible at
Parwanipur. This showed that there was prevalence of variable pathotypes over locations and
thus, genotypes need to be tested over locations to identify donor parents and resistant
genotypes for recommendation. Similarly, A total of 242 rice lines in 2009 and 261 lines in
20 I 0 with a diverse genetic background were evaluated for resistance to blast disease over
locations. Disease severity ranged from 0 to 9 in both the years. Blast reactions in genotypes
were differed in all locations. During 2009, 242 genotypes were scored immune, 27 resistant
(R) and 28 genotypes moderately resistant (MR), at Parwanipur. Similarly, 2 genotypes were
scored as 2 immune, 217 resistant, 9 moderately resistant, 7 highly susceptible at Nawalpur.
Likewise, genotypes were found as 78 resistant, 97 moderately resistant, 36 susceptible at
Hardinath. During 20 I 0, genotypes were found as 33resistant, 151 moderately resistant, 56
lines moderately susceptible (MS) and 9 lines susceptible at Hardinath. Similarly in 20 I 0, 261
lines scored resistant, I moderately resistant and 2 highly susceptible at Parwanipur. This
showed that there was prevalence of variable pathotypes over locations and thus, genotypes
need to be tested over locations to identify donor parents and resistant genotypes for
recommendation. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=913 |
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