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Opportunities for exploiting variations in haulm fodder traits of intermittent drought tolerant lines in a reference collection of groundnut (Arachis hypogaea L.)

OAR@ICRISAT

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Relation http://oar.icrisat.org/4102/
http://dx.doi.org/10.1016/j.fcr.2011.10.004
 
Title Opportunities for exploiting variations in haulm fodder traits of intermittent drought tolerant lines in a reference collection of groundnut (Arachis hypogaea L.)
 
Creator Blummel, M
Ratnakumar, P
Vadez, V
 
Subject Groundnut
 
Description Groundnut haulm has a great value as feed stock in the semi-arid tropics. Two-hundred-two and 194
cultivars of groundnut grown under intermittent water stress and fully irrigated treatment for two consecutive
years at ICRISAT (2008/2009 and 2009/2010) in Patancheru in India were investigated for haulm
fodder quality traits and for potential trade-offs between pod or haulm yield and haulm fodder traits.
Highly significant (P < 0.0001) cultivars-dependent variations were found for a range of laboratory haulm
fodder quality traits. Haulm nitrogen contents ranged from 1.94 to 2.88% and from 1.81 to 2.66% while
in vitro digestibility ranged from 57.3 to 64.3% and from 59.5 to 64.2% under water restriction and fully
irrigated conditions, respectively. Under fully irrigated conditions haulm nitrogen content and in vitro
digestibility were mildly, but significantly inversely, related to pod yields with the two haulms traits
accounting for 5 and 4% of the variations in pod yields. However, potential trade-offs between haulm
traits and pod yields became more pronounced under water stress where variations in haulm nitrogen
content and in vitro digestibility accounted for 40 and 28% of the variations in pod yields, respectively.
For haulm nitrogen content and in vitro digestibility no significant interactions were observed between
cultivar and treatment suggesting stability of haulm fodder traits across poorer and better water management
practices. These results demonstrate that breeding for fodder traits in groundnut can be parallel
to breeding for productivity traits, although careful choice of cultivars with high fodder trait value would
be needed under water stress conditions.
 
Publisher Elsevier
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
Rights —
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Identifier http://oar.icrisat.org/4102/1/FCR126_200-206_2012.pdf
http://oar.icrisat.org/4102/7/Opportunities_Post-print%20.pdf
Blummel, M and Ratnakumar, P and Vadez, V (2012) Opportunities for exploiting variations in haulm fodder traits of intermittent drought tolerant lines in a reference collection of groundnut (Arachis hypogaea L.). Field Crops Research, 126. pp. 200-206. ISSN 0378-4290