Loading...
Please wait, while we are loading the content...
Similar Documents
Development of Broad Spectrum and Durable Bacterial Blight Resistant Variety through Pyramiding of Four Resistance Genes in Rice
| Content Provider | MDPI |
|---|---|
| Author | Pradhan, Kartik Chandra Pandit, Elssa Mohanty, Shakti Prakash Moharana, Arpita Sanghamitra, Priyadarsini Meher, Jitendriya Jena, Binod Kumar Dash, Prasanta K. Behera, Lambodar Mohapatra, Pavitra Mohan Bastia, Debendra Nath Pradhan, Sharat Kumar |
| Copyright Year | 2022 |
| Description | Bacterial blight (BB) disease caused by Xanthomonas oryzae pv. oryzae is a major biotic constraint on obtaining higher grain yields in rice. Marker-assisted backcross breeding (MABB) was performed by the pyramiding of Xa4, xa5, xa13 and Xa21 resistance genes in the popular variety, Ranidhan. A foreground selection in $BC_{1}F_{1}$, $BC_{2}F_{1}$, and $BC_{3}F_{1}$ progenies detected all the target genes in 12, 7 and 16 progenies by using the closely linked markers from a population size of 446, 410, and 530, respectively. The BB-positive progenies carrying the target genes with a maximal similarity to the recipient parent was backcrossed in each backcross generation. A total of 1784 $BC_{3}F_{2}$ seeds were obtained from the best $BC_{3}F_{1}$ progeny. The screening of the $BC_{3}F_{2}$ progenies for the four target genes resulted in eight plants carrying all the four target genes. A bioassay of the pyramided lines conferred very high levels of resistance to the predominant isolates of bacterial blight disease. In addition, these pyramided lines were similar to Ranidhan in 16 morpho-quality traits, namely, plant height, filled grains/panicle, panicles/plant, grain length, grain breadth, grain weight, milling, head rice recovery, kernel length after cooking, water uptake, the volume expansion ratio, gel consistency, alkali-spreading value, and the amylose content. |
| Starting Page | 1903 |
| e-ISSN | 20734395 |
| DOI | 10.3390/agronomy12081903 |
| Journal | Agronomy |
| Issue Number | 8 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-14 |
| Access Restriction | Open |
| Subject Keyword | Agronomy Bacterial Blight Disease Gene Pyramiding Resistance Genes Foreground Selection Background Selection Marker-assisted Selection Xanthomonas Oryzae Pv. Oryzae |
| Content Type | Text |
| Resource Type | Article |
