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Characterizing sorghum genotypes for forage yield, hydrocyanic acid and sugar contents under arid climate conditions

Published online by Cambridge University Press:  23 November 2023

Ahmad Sher*
Affiliation:
College of Agriculture, University of Layyah, Layyah 31200, Pakistan Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
Sami Ul-Allah*
Affiliation:
College of Agriculture, University of Layyah, Layyah 31200, Pakistan Department of Plant Breeding and Genetics, Bahauddin Zakariya University, Multan 60800, Pakistan
Abdul Sattar
Affiliation:
College of Agriculture, University of Layyah, Layyah 31200, Pakistan Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
Lorenzo Barbanti
Affiliation:
Department of Agricultural and Food Sciences, University of Bologna, Bologna 40127, Italy
Muhammad Ijaz
Affiliation:
College of Agriculture, University of Layyah, Layyah 31200, Pakistan Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan
*
Corresponding author: Ahmad Sher; Email: ahmad.sher@bzu.edu.pk; Sami-Ul-Allah; Email: samipbg@bzu.edu.pk
Corresponding author: Ahmad Sher; Email: ahmad.sher@bzu.edu.pk; Sami-Ul-Allah; Email: samipbg@bzu.edu.pk

Abstract

Sorghum (Sorghum bicolor (L.) Moench) is a dual nature crop, which is used for food as well as fodder, depending on plant ideotype. Sorghum forage is important for ruminants, but a major constraint is the anti-nutritional factor dhurrin, a hydrocyanic acid (HCN) producing glucoside. There are several additional effects of dhurrin, which reduce the nutritional value of sorghum fodder for livestock. This two-year study was aimed to evaluate the variation among diverse sorghum varieties, specifically for HCN content, forage yield and stem sugar content (brix value) under arid climate in Pakistan. Nine sorghum varieties were used for this experiment: JS-2002, Chakwal sorghum, Lines CS-17, Super late, PAK SS-2, Johar, JS-263, Sargodha-2011 and YSS-98. Results reveal that Sargodha-2011 had superior morphological traits for fresh forage and dry biomass yield, and stem brix value, compared to other varieties. Higher HCN contents were recorded in Super late compared to other varieties. Significant negative correlation of HCN with yield showed that improvement in yield will reduce the HCN content of sorghum. In conclusion, sorghum variety SGD-11 was shown best performing for higher biomass yield and brix value, and lower HCN content compared to other tested varieties under arid climate of Thal, Pakistan.

Type
Research Article
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of National Institute of Agricultural Botany

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