International Journal of Agriculture, Environment and Biotechnology
  • Year: 2017
  • Volume: 10
  • Issue: 1

Genetics of fertility restoration and agronomic performance of CMS based hybrids in pigeonpea

Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221 005, India

*Corresponding author e-mail: nishant.bhanu@gmail.com

Online published on 15 April, 2017.

Abstract

In the study, CMS based hybrid combination involving two male sterile lines (Cajanus cajanifolius) and four restorer lines in pigeonpea (Cajanus cajan) were studied to determine the genetics of fertility restoration in pigeonpea (Cajanus cajan L. Millsp.). Based on the pollen fertility and pod setting, F2 segregating populations were categorised. Out of two major genes governing the fertility restoration, one gene segregated in the ratio of 9:3:4 whereas the second gene in 12:3:1 due to the allelic differences. The ICPA 2043/LRG 41 and ICPA 2043/NDA 1 hybrids fits best for agronomical aspects as they showed earliness with respect to flowering and maturity having more number of pods plant−1, increase in pod length along with more seed yield plant−1. CMS system is a useful tool serving to increase seed yield production of various crops and consummate the demands of increasing populations.

Fertility restoration was observed to be governed by two major genes.

The seed yield of hybrids was extremely high i.e. 62.12 and 12.18 and 67.32 and 15.78 per cent over the checks LRG 41 and NDA1 respectively.

Keywords

Epistasis, restorer, pollen fertility, hybrid, pigeonpea