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Inducing variability in multi-cut forage sorghum through mutagenesis

Published online by Cambridge University Press:  05 December 2012

S. K. Pahuja ,
C. Aruna ,
P. K. Shrotria ,
Simarjit Kaur ,
B. R. Ranwah  and
J. V. Patil
S. K. Pahuja
Affiliation:
Chaudhary Charan Singh Haryana Agricultural University (CCSHAU), Hisar, India
C. Aruna*
Affiliation:
Directorate of Sorghum Research (DSR), Rajendranagar, Hyderabad500 030, AP, India
P. K. Shrotria
Affiliation:
Govind Ballabh Pant University of Agriculture and Technology (GBPUAT), Pantnagar, Uttaranchal, India
Simarjit Kaur
Affiliation:
Punjab Agricultural University (PAU), Ludhiana, Punjab, India
B. R. Ranwah
Affiliation:
Maharana Pratap University of Agriculture and Technology (MPUAT), Udaipur, Rajasthan, India
J. V. Patil
Affiliation:
Directorate of Sorghum Research (DSR), Rajendranagar, Hyderabad500 030, AP, India
*
*Corresponding author. E-mail: aruna@sorghum.res.in
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Abstract

Improvement in multi-cut forage sorghum varieties that can perform better than SSG 59-3, a sweet Sudan grass released in 1974, has been a challenge. Efforts were made to create variability in SSG 59-3 through mutagenesis using both physical and chemical mutagens. Fifteen such mutants were evaluated for 2 years in different locations in India. Considerable variability was observed for important fodder yield and quality traits. SSG 237 flowered 10 d early than SSG 59-3. SSG 231, SSG 260, SSG 232 and SSG 237 had high protein percentage and in vitro dry matter digestibility (IVDMD) values compared with SSG 59-3. Hydrocyanic acid (HCN), a major anti-nutritional factor, was low in six mutants, the lowest being in SSG 226. This variability can be used in different breeding programmes aimed at improving multi-cut forage sorghum varieties. The lines with improved fodder quality (low HCN, high protein and IVDMD) can be used in the breeding programme for the improvement in multi-cut forage sorghum varieties.

Keywords

digestibilityearlinessforage qualityHCNstability
Type
Research Article
Information
Plant Genetic Resources , Volume 11 , Issue 2 , August 2013 , pp. 114 - 120
Copyright
Copyright © NIAB 2012 

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