Selection indices in groundnut (Arachis hypogaea L.)

  • Jivanlal Hanshrajbhai Vachhani Main Oilseeds Research Station Junagadh Agricultural University Junagadh http://orcid.org/0000-0002-7862-2999
  • Satyendra Singh Raghuwanshi Main Oilseeds Research Station Junagadh Agricultural University Junagadh
  • V.H. Kachadia Main Oilseeds Research Station Junagadh Agricultural University Junagadh
  • L.L Jivani Main Oilseeds Research Station Junagadh Agricultural University Junagadh
  • Ashok Kumar Malav Main Oilseeds Research Station Junagadh Agricultural University Junagadh
  • Shakti Singh Bhati Main Oilseeds Research Station Junagadh Agricultural University Junagadh
Keywords: Discriminant function, relative efficiency, selection indices and groundnut

Abstract

Fifty diverse genotypes of Virginia groundnut were evaluated in a randomized block design with three replications for the study of selection indices during summer 2014. Thirty-one selection indices involving pod yield per plant (X1) and four yield components viz., kernel yield per plant (X2) harvest index (X3), number of mature pods per plant (X4) and biological yield per plant (X5) were constructed using the discriminant function technique. Discriminant function analysis indicated that selection efficiency of the function was improved by increasing number of characters in the index. Among the single character indices, biological yield per plant exhibited higher genetic advance and relative efficiency over straight selection for pod yield per plant. The index based on five characters viz., pod yield per plant, kernel yield per plant, harvest index, number of mature pods per plant and biological yield per plant recorded the highest genetic advance as well as relative efficiency and selection efficiency. These characters could be advantageously exploited in the groundnut breeding programmes.

Author Biographies

Jivanlal Hanshrajbhai Vachhani, Main Oilseeds Research Station Junagadh Agricultural University Junagadh

Research Scientist

Main Oilseeds Research Station

Satyendra Singh Raghuwanshi, Main Oilseeds Research Station Junagadh Agricultural University Junagadh
Main Oilseeds Research Station
Junagadh Agricultural University
Junagadh
V.H. Kachadia, Main Oilseeds Research Station Junagadh Agricultural University Junagadh
Main Oilseeds Research Station
Junagadh Agricultural University
Junagadh
L.L Jivani, Main Oilseeds Research Station Junagadh Agricultural University Junagadh
Main Oilseeds Research Station
Junagadh Agricultural University
Junagadh
Ashok Kumar Malav, Main Oilseeds Research Station Junagadh Agricultural University Junagadh
Main Oilseeds Research Station
Junagadh Agricultural University
Junagadh
Shakti Singh Bhati, Main Oilseeds Research Station Junagadh Agricultural University Junagadh
Main Oilseeds Research Station
Junagadh Agricultural University
Junagadh
Published
13-06-2016
Section
Research Note