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 |
The present investigation was carried out at Eastern Block of the Central Farm Unit, Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India to identify the gene interaction for yield contributing characters to increase the yield. For this purpose nine biometrical characters of four SDM resistant progenies viz., UMI 79/936-C1- 7-7-7-40, UMI 79/936-C1- 7-7-7-46, UMI 79/936-C1- 7-7-7-52 and UMI 79/936-C1- 7-7-7-80 were used for skewness and kurtosis studies. These studies revealed that in BC3F3 population, progeny UMI 79/936- C1-7-7-7-40 positive skewness for days to 50% tasseling, days to 50% silking, days to maturity, cob diameter, 100 grain weight and grain yield per plant and negative kurtosis was observed for the traits under study. The positive skewness indicates the presence of complementary epistatic gene action for the trait and the gain is slower with mild selection and gain is faster with intensive selection. The progenies UMI 79/936- C1-7-7-7-46, UMI 79/936- C1-7-7-7-52 and UMI 79/936- C1-7-7-7-80 showed positive skewness for 50% tasseling, days to 50% silking, days to maturity, cob length, cob diameter, 100 grain weight and grain yield per plant. Most of the traits under study showed negative kurtosis in BC3F3 population. The negative kurtosis indicate platykurtic curve which means that flat values are present in the distribution and complementary gene action. If selection for these characters were made intensively, the gain will be faster.
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