STUDIES IN THREE F2 POPULATIONS OF GREENGRAM (Vigna radiata L. Wilzeck)

I. MARIYAMMAL¹*, M. PANDIYAN², C. VANNIARAJAN³, J.S. KENNEDY⁴, N. SENTHIL^5
1Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Madurai, 625104, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
²Agricultural College and Research Institute, Eachangkottai, 613006, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
³Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Madurai, 625104, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁴Horticulture Research Station, Yercaud, Salem, 636601, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁵Department of Plant Molecular Biology and Bioinformatics, Center for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
* Corresponding Author : mari.tnau@gmail.com

Received : 01-02-2019     Accepted : 12-02-2019     Published : 28-02-2019
Volume : 11     Issue : 2       Pages : 564 - 566
Genetics 11.2 (2019):564-566

Keywords : Greengram, Range, Skewness, Kurtosis, Frequency
Academic Editor : Dr Shahid Ahamad
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful Agriculture Research Station, Government of India for financial research grand SERB/F/1406/2013-2014. Authors are also thankful to Agricultural College and Research Institute, Madurai, 625104, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India.
Author Contribution : All authors equally contributed

Present experiment was conducted to study the frequency distribution in F2 populations of three crosses in greengram viz., VBN 2 x RIL 165, VBN 2 x RIL 169 and VRM (Gg)1 x RIL 165. In this study, observation of eight traits, the range of yield and its attributes were exposed to descriptive statics analysis to find out the distribution. The traits namely, days to first flowering, plant height, number of clusters per plant and number of pods per cluster showed positive skewed and platykurtic. It showed the presence of complimentary gene action and duplicate gene interaction. Hence, these populations must be handled with stringent selection process to achieve quick genetic gain since they are governed by large number of genes with complimentary gene action. Negative skewness and platykurtic was recorded by number of seeds per pod which is influenced by large number of genes with duplicate epistasis interaction and mild selection is adequate to get rapid genetic gain.

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