eprintid: 10362
rev_number: 12
eprint_status: archive
userid: 1305
dir: disk0/00/01/03/62
datestamp: 2017-12-19 08:18:17
lastmod: 2017-12-29 07:56:18
status_changed: 2017-12-19 08:18:17
type: article
metadata_visibility: show
creators_name: Mudaraddi, B
creators_name: Saxena, K B
icrisatcreators_name: Mudaraddi, B
icrisatcreators_name: Saxena, K B
affiliation: ICRISAT (Patancheru)
country: India
title: Heterosis in relation to molecular diversity in pigeonpea [Cajanus cajan (L.) Millsp.]
ispublished: pub
subjects: MB1
subjects: s1.2
full_text_status: public
keywords: Gene action, Hybrid vigour, Inbreeding depression, Molecular diversity, Pigeonpea
abstract: Pigeonpea is the only grain legume crop where hybrid vigour
has been exploited commercially. For sustaining this
technology, it is imperative that information about the genetic
nature of hybrid vigour is generated and new high-yielding
hybrids are bred at regular intervals. In this context, a set of
genetic materials, consisting 19 hybrids, their parents and F2
bulks was studied. Only four hybrids expressed significant
heterosis over mid-parent; and of these, two were found to be
significantly superior to their respective better parent also.
The hybrid between ICPA 2209 and ICPL 20108 was the best
with respect to heterobeltiosis (55.9%**) and relative heterosis
(60.5%**). The studies also showed that both additive as well
as non-additive genetic variation played a key role in the
manifestation of hybrid vigour. Based on the molecular
diversity of the parents, two heterotic groups were formed in
A-lines, while three heterotic groups were formed in the Rlines.
The results showed that in this material high heterosis
was not necessarily related to their molecular diversity.
date: 2017
date_type: published
publication: Journal of Food Legumes
volume: 30
number: 2
publisher: Indian Society of Pulses Research and Development
pagerange: 9-137
refereed: TRUE
issn: 0970-6380
citation:   Mudaraddi, B and Saxena, K B  (2017) Heterosis in relation to molecular diversity in pigeonpea [Cajanus cajan (L.) Millsp.].  Journal of Food Legumes, 30 (2).  pp. 9-137.  ISSN 0970-6380     
document_url: http://oar.icrisat.org/10362/1/Heterosis%20in%20relation-BM-KBS%20Journal%20of%20food%20legumes.pdf