NDLI: Making an Indian traditional rice variety Mahsuri, bacterial blight resistant using marker-assisted selection

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Journal of Crop Science and Biotechnology : Volume 16, Issue 1, March 2013

Journal of Crop Science and Biotechnology : Volume 15

Journal of Crop Science and Biotechnology : Volume 14

Journal of Crop Science and Biotechnology : Volume 13

Journal of Crop Science and Biotechnology : Volume 12

Making an Indian traditional rice variety Mahsuri, bacterial blight resistant using marker-assisted selection

Content Provider	Springer Nature Link
Author	Guvvala, Lalitha Devi Koradi, Pranitha Shenoy, Vinay Marella, Lalitha Shanti
Copyright Year	2013
Abstract	Mahsuri a popular traditional variety and the first rain-fed mega variety of the Indian sub- continent. It is highly susceptible to bacterial leaf blight caused by Xanthomonas oryzae pv.oryzae. Nine best performing families of Mahsuri pyramid containing four bacterial blight resistance genes (Xa4, xa5, xa13 and Xa21) were evaluated for agronomic, yield and its related characters viz. days to 50% flowering, plant height, number of tillers, panicle length, filled grains per panicle, grain weight, and yield under natural and disease pressure conditions for three consecutive wet seasons. In addition these pyramids were also evaluated for three different spacings to find out the optimum spacing under disease free and disease pressure conditions.Results revealed that under disease free conditions there was no significant difference between the pyramids and the parent for the characters evaluated in each spacing. However characters plant height, number of tillers, panicle length, filled grains per panicle, yield per plant and yield per sq. m. showed significant variation between the different spacings across seasons. Under heavy disease pressure the parent exhibited highly susceptible reaction whereas the pyramid families were highly resistant. A wider spacing had less yield loss when compared to dense planting under BB infestation in case of parent. There was no such yield loss in the pyramid families.When yield per sq. m. was taken into consideration the 20 × 20 cm spacing showed the highest yield when compared to the other two spacings since number of plants were more. The pyramids insulated the yield loss against bacterial leaf blight and are a gain to the farmers to help overcome the heavy yield losses due to this disease. These pyramids have the potential to replace the parent and can be used directly. In addition they can be used as donors for bacterial blight resistance in any breeding program.
Starting Page	111
Ending Page	121
Page Count	11
File Format	PDF
ISSN	19759479
Journal	Journal of Crop Science and Biotechnology
Volume Number	16
Issue Number	2
e-ISSN	20058276
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-06-29
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	bacterial leaf blight Mahsuri marker-assisted selection pyramids rice spacing yield Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Plant Science Biotechnology Agronomy and Crop Science

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