National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An experiment was framed to study the variability, nature of gene action and number of genes controlling the characters in bacterial blight and blast resistance genes introgressed three backcross population in rice. Mean variation was high for number of grains and plant height for all the crosses. The characters like plant height, number of productive tillers and number of grains were showed complementary gene interaction for all back cross population. While for thousand grain weight and single plant yield were explained complementary gene interactions in two backcross populations. Selection on these traits would obtain low genetic advance than expected. Panicle length in two crosses and thousand grain weight and single plant yield in one cross was showed duplicate gene interaction suggests that selection would be effective to gain higher genetic advance than expected. Kurtosis for plant height and panicle length was influenced by only few genes for all crosses, whereas number of productive tillers and number of grains were controlled by few genes for at least two crosses. Platykurtic distribution was prevalent in most of the characters in all crosses. Leptokurtic distribution was found in the cross TNAU CMS 2B × (TNAU CMS 2B × Zenith) for number of grains, suggesting that controlled by fewer genes.
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