In:
Plant Breeding, Wiley, Vol. 132, No. 5 ( 2013-10), p. 486-495
Kurzfassung:
Marker‐assisted simultaneous but stepwise backcross breeding ( MASS ‐ BB ) was utilized in the present study for pyramiding blast resistance genes, Piz5 and Pi54 , from non‐Basmati donors, C101A51 and Tetep, respectively, into PRR 78, an elite Basmati restorer line of rice hybrid, Pusa RH 10. Marker‐assisted foreground selection coupled with stringent phenotypic selection and background analysis was carried out for hastening the recovery of recurrent parent phenome ( RPP ) and genome ( RPG ) in two separate backcross series to produce BC 2 F 1 plants with individual blast resistance gene. The best BC 2 F 1 plant from each backcross series was intercrossed, and the resultant F 1 was selfed to pyramid both blast‐resistance genes into PRR 78. The plants homozygous for both the genes in the F 2 were advanced through pedigree selection to produce superior blast‐resistant F 5 lines. Background analysis revealed that the RPG recovery was up to 91.6%. Improved versions of Pusa RH 10 developed using the improved PRR 78 lines ( PRR 78+ Piz5 + Pi54 ) performed on par with the original Pusa RH 10 and showed resistance to blast disease both under artificial screening and at hot spot locations.
Materialart:
Online-Ressource
ISSN:
0179-9541
,
1439-0523
DOI:
10.1111/pbr.2013.132.issue-5
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2013
ZDB Id:
2020488-7
SSG:
12