Development of blast resistant versions of improved samba Mahsuri variety of rice (Oryza sativa L.) through marker assisted breeding
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Title |
Development of blast resistant versions of improved samba Mahsuri variety of rice (Oryza sativa L.) through marker assisted breeding
Research paper |
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Creator |
Parashuram Patroti, J Suresh, Shilpa Parashuram and MS Madhav
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Subject |
Blast resistance, foreground selection, pyramided lines, SSR, uniform blast nursery
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Description |
Not Available
Globally, blast incited by Magnaporthe oryzae forms major fungal diseases that can cause severe loss in yield to the extent of 70-80% in various rice ecosystems. Marker assisted backcross breeding approach was employed to incorporate blast resistance genes viz., Pi1, Pi2 and Pi54, from the donor lines BPT/lac/tetep and B95-1/A51 into blast susceptible otherwise superior cultivar Improved Samba Mahsuri. Foreground selection coupled with stringent phenotypic selection lead to the identification of 15 superior BC2F2 plants homozygous for three genes. Agro-morphological evaluation of the pyramided lines revealed that three of the selections viz., ISM10-15-101, ISM10-15-119 and ISM10-15-154 showed significant increase in no. of filled grains per panicle (30.22%) and yield (24.23%). BC2F2:3 derived lines, varied in their disease reaction to DRR isolates. Three of the Pi1+Pi2+Pi54 pyramided lines showed complete resistance to mixture of virulent races under artificial inoculation as well as in UBN test locations. Not Available |
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Date |
2020-09-02T10:46:33Z
2020-09-02T10:46:33Z 2018-12-14 |
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Type |
Research Paper
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Identifier |
Not Available
2349-8234 http://krishi.icar.gov.in/jspui/handle/123456789/40775 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Journal of Pharmacognosy and Phytochemistry
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