Legume Research

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Research Article

Legume Research, volume 42 issue 5 (october 2019) : 595-602

Frequency of heterotic hybrids in relation to parental genetic divergence and general combining ability in blackgram [Vigna mungo (L.) Hepper]

K.M. Boraiah, M. Byregowda, C.M. Keerthi, H.P. Vijayakumar, S. Ramesh, Mary Reena
1AICRP on Pigeonpea, ZARS, University of Agricultural Sciences, Gandhi Krishi Vignana Kendra, Bengaluru-560 065, Karnataka, India.

  • Submitted17-07-2017|

  • Accepted15-10-2018|

  • First Online 13-02-2019|

  • doi 10.18805/LR-3916

Cite article:- Boraiah K.M., Byregowda M., Keerthi C.M., Vijayakumar H.P., Ramesh S., Reena Mary (2019). Frequency of heterotic hybrids in relation to parental genetic divergence and general combining ability in blackgram [Vigna mungo (L.) Hepper]. Legume Research. 42(5): 595-602. doi: 10.18805/LR-3916.

ABSTRACT

An investigation was carried out to test the predictability of frequency of heterotic hybrids based on parental gca effects and genetic diversity in blackgram. The 40 F1s effected using 10 lines and 4 testers were evaluated along with their parents for 10 productivity per set raits. The overall gca status (high and low) of each parent and overall sca and heterotic status (high and low) of each hybrid across 10 traits were determined. Based on overall gca status and genetic divergence of parents, the hybrids were grouped into different classes. The hybrids involving parents contrasting for overall gca status and/or those involving parents with intermediate genetic divergence were more frequently heterotic than those involving comparable gca status and with extreme genetic divergence. It is hence, desirable to involve parents with intermediate genetic divergence and contrasting gca effects to recover higher frequencies of heterotic hybrids for productivity per se traits in blackgram. 

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