eprintid: 10720
rev_number: 10
eprint_status: archive
userid: 1305
dir: disk0/00/01/07/20
datestamp: 2018-06-13 07:50:33
lastmod: 2018-06-13 07:50:33
status_changed: 2018-06-13 07:50:33
type: conference_item
metadata_visibility: show
creators_name: Kanuganahalli, V
creators_name: Kodukula, P
creators_name: Devulapall, R
creators_name: Deshpande, S
creators_name: Vadez, V
creators_name: Blümmel, M
icrisatcreators_name: Kanuganahalli, V
icrisatcreators_name: Deshpande, S
icrisatcreators_name: Vadez, V
affiliation: ICRISAT (Patancheru)
affiliation: International Livestock Research Institute (Hyderabad)
country: India
title: Genetic variability for fodder quality traits in sorghum under different water regimes
ispublished: pub
subjects: s1.4
subjects: s2.13
divisions: CRPS4
full_text_status: public
pres_type: paper
keywords: Genetic variability, fodder quality traits, sorghum, water regimes
abstract: Sorghum is grown as a dual purpose crop yielding food (grain)
and fodder (stover) in marginal environments of Asia and
Sub-Saharan Africa. Application of genomics and trait discovery
tools in breeding program can expedite genetic improvement of
fodder quality. Earlier reports suggested that a difference of one
percentage unit in stover digestibility increases livestock output
of 6 to 8%. To characterize fodder quality traits in sorghum and
to identify genomic regions related to t[hose traits, a set of mapping
population parents (24) were evaluated under two water
regimes (control and stress) over 3 years at ICRISAT-Patancheru.
In vitro organic matter digestibility (IVOMD%) – a key stover
quality trait, test weight (TW-g), stalk yield (SY-Kg/ha) and
grain yield (GY-Kg/ha) recorded significant variation across
genotype, treatment, year and interaction effects. Across season
analyses revealed a range of 45.8% to 50.4% for IVOMD,
variation from 1.9g to 4.1g for TW. The SY and GY recorded a
mean value of 4552 Kg/ha and 3152 Kg/ha, across years. While
heritability estimates across seasons were on higher side for TW
(0.85), SY (0.77) and IVOMD (0.70), it was lower for GY (0.39).
A positive correlation of 0.63 and 0.79 was observed for SY –
IVOMD and plant height (PH) - SY, respectively. This further implied
that an opportunity exists for simultaneous improvement
in both yield and fodder quality. We identified a parental set
of ICSV1 and ICSV700 having consistently contrasting values
across all seasons for IVMOD for further genetic mapping of the
fodder quality traits in sorghum.
date: 2017-02
date_type: published
pagerange: P-077
event_title: InterDrought-V
event_location: Hyderabad, India
event_dates: February 21-25, 2017
event_type: conference
refereed: TRUE
related_url_url: http://idv.ceg.icrisat.org/wp-content/uploads/2017/02/Abstract_Book_Final.pdf
related_url_type: org
citation:   Kanuganahalli, V and Kodukula, P and Devulapall, R and Deshpande, S and Vadez, V and Blümmel, M  (2017) Genetic variability for fodder quality traits in sorghum under different water regimes.  In: InterDrought-V, February 21-25, 2017, Hyderabad, India.     
document_url: http://oar.icrisat.org/10720/1/Genetic%20variability%20for%20fodder.pdf