Genetic Analysis of Blast (Pyricularia grisea Sacc.) Resistance in Rice (Oryza sativa L.)

Persaud, Mahendra; Kumar, Amit; ., R.B.S. Sengar; Sao, Abhinav; Dantre, R. K.; Shrivastava, M. N.

doi:10.3923/jbs.2007.215.217

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…Two backcross generations, B1 (F1 x HUR 3022) and B2 (F1 x Tetep) of the cross showed different response from each other during evaluation for blast disease resistance. These findings also showed similarity with earlier reports (Persaud et al, 2007;Singh et al, 2014 2; Table 3). These results showed that blast disease resistance in two backcross generations was governed by two dominant genes which showed polymeric gene action.…”

Section: Resultssupporting

confidence: 93%

“…These findings are in contradiction with reports of single dominant gene governing blast resistance in rice (Fuji & Saito, 2007;Sharma et al, 2007;Ashkani et al, 2011). These findings are in partial agreement with the earlier reports of two dominant genes showing interaction for governing blast resistance in rice (Fillip & Prabhu, 1996;Persaud et al, 2007;Zewdu et al, 2018).…”

Section: Resultscontrasting

confidence: 73%

“…These results showed that blast disease resistance in two backcross generations was governed by two dominant genes which showed polymeric gene action. Disease resistance governed by two dominant genes in interaction was earlier reported but they reported presence of two independent dominant genes or complementary gene interaction (Persaud et al, 2007;Zewdu et al, 2018).…”

Section: Resultsmentioning

confidence: 85%

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INHERITANCE OF BLAST DISEASE RESISTANCE IN THE CROSS HUR 3022 X TETEP OF RICE (Oryza sativa L.)

Singh¹,

Verma²,

Bisen³

et al. 2019

JEBAS

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An experiment was carried out using six generations (P1, P2, F1, F2, B1 and B2) of cross HUR 3022 x Tetep in rice at BHU, Varanasi during year 2017-2018 to know the inheritance pattern of leaf blast disease under artificial inoculation with LB-TN-2 isolate of Magnaporthe oryzae in the field condition. The blast disease resistant cultivar 'Tetep' showed 9.32% disease severity, while high yielding, early maturing susceptible cultivar HUR 3022 showed 43.65% disease severity against M. oryzae. The area under the disease progress curve (AUDPC) of resistance cultivar was observed 127.95 which are significantly less than the susceptible cultivar 605.62. The F1 (HUR 3022 x Tetep) plants were observed to be resistant with an average disease severity and AUDPC are 17.54% and 224.7, respectively. The F2 population was observed to show three distinct phenotypic classes resistant, moderately resistant and susceptible with a ratio of 9:6:1, respectively. Two backcross Populations, B1 and B2 showed different response from each other during evaluation which results in the phenotypic ratio of 1R:2MR:1S in B1 and 1R:0S in B2, respectively. The results showed that blast disease resistance occurs in the cross is due to duplicate cumulative effects or polymeric gene effect of two dominant resistant genes i.e., Pi1 and Pi54.

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Section: Resultssupporting

confidence: 93%

Section: Resultscontrasting

confidence: 73%

Section: Resultsmentioning

confidence: 85%

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INHERITANCE OF BLAST DISEASE RESISTANCE IN THE CROSS HUR 3022 X TETEP OF RICE (Oryza sativa L.)

Singh¹,

Verma²,

Bisen³

et al. 2019

JEBAS

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Identification of suitable segregating SSR markers for blast resistance in rice using inheritance and disease reaction analysis in backcross families

Tanweer

Rafii

Sijam

et al. 2015

Australasian Plant Pathol.

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The study was conducted to identify the suitable SSR markers in relation to blast disease of rice. Backcross breeding was applied and BC 2 F 1 generation was produced using rice variety Pongsu Seribu 2 as blast resistant parent and MR219 as susceptible parent. Eleven SSR markers related to blast resistance genes (Pi gene) were found highly polymorphic between the parental lines. According to single-gene model only two markers, RM208 and RM206, fitted to the expected test cross ratio (1:1) in BC 2 F 1 generation with the relation to resistant and susceptible plants. Further BC 2 F 1 population carrying 320 plants were inoculated with the highly virulent pathotype P7.2 of Magnaporthe oryze. Chi-square (χ2) test for single-gene model showed goodness of fit (p=0.45) to the expected segregation ratio (1:1) for phenotypic segregation in BC 2 F 1 population. In marker segregation analysis two markers RM208 (χ2=1.513, p=0.218) and RM206 (χ2=0.613, P=0.433) clearly produced goodness of fit to the expected test cross ratio (1:1) for the single-gene model. The present finding could help the rice breeders to monitor the blast resistance genes with appropriate and highly segregating SSR markers in rice varietal development program against blast disease.

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Genetic Analysis of Blast (Pyricularia grisea Sacc.) Resistance in Rice (Oryza sativa L.)

Cited by 2 publications

References 3 publications

INHERITANCE OF BLAST DISEASE RESISTANCE IN THE CROSS HUR 3022 X TETEP OF RICE (Oryza sativa L.)

INHERITANCE OF BLAST DISEASE RESISTANCE IN THE CROSS HUR 3022 X TETEP OF RICE (Oryza sativa L.)

Identification of suitable segregating SSR markers for blast resistance in rice using inheritance and disease reaction analysis in backcross families

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