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Cyanogenic Potential Variations Within Plot, Plant and Roots of Cassava Varieties Grown in the Same Environment

Cyanogenic Potential Variations Within Plot, Plant and Roots of Cassava Varieties Grown in the... Cyanide accumulation within cassava roots is a safety determinant in consumption of cassava products. Promotion of cassava utilization in different applications therefore calls for breeding of varieties with low cyanogenic potential and stability for cyanide content within a given set of environmental conditions. This can be achieved through an understanding of the distribution of cyanide within a root tissue and whether such distribution mechanisms are similar within cassava plant stands, or plant stands within a plot, or in varieties grown within a set of environmental conditions. Thus using a set of four varieties, this study investigated variations in cyanogenic potential within varieties, plant stands of the same variety and different portions of the root within a particular variety. Root dry matter content ranged from 30 to 42% and was significantly different for the different root portions. The cyanogenic variety NASE 3 had higher cyanogenic potential (~ 150 ppm) compared to NASE 14 (66.2 ppm) and NAROCASS 1 (106.3 ppm). Cassava plants from the same variety and environment differed by up to 35% cyanogenic potential. Variations of up to 29% were also observed in the distribution of cyanide along the root. A tissue and time-dependent variation in accumulation of cyanide was observed with low level of variation within the middle root portion indicating possibility of middle portion as representative for estimating whole root cyanogenic potential. The results also indicate that higher sample numbers are needed in reducing the error of determination resulting from the wide differences within roots and plants of the same variety. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings of the National Academy of Sciences India Section B Biological Sciences Springer Journals

Cyanogenic Potential Variations Within Plot, Plant and Roots of Cassava Varieties Grown in the Same Environment

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References (29)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to The National Academy of Sciences, India 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0369-8211
eISSN
2250-1746
DOI
10.1007/s40011-022-01418-3
Publisher site
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Abstract

Cyanide accumulation within cassava roots is a safety determinant in consumption of cassava products. Promotion of cassava utilization in different applications therefore calls for breeding of varieties with low cyanogenic potential and stability for cyanide content within a given set of environmental conditions. This can be achieved through an understanding of the distribution of cyanide within a root tissue and whether such distribution mechanisms are similar within cassava plant stands, or plant stands within a plot, or in varieties grown within a set of environmental conditions. Thus using a set of four varieties, this study investigated variations in cyanogenic potential within varieties, plant stands of the same variety and different portions of the root within a particular variety. Root dry matter content ranged from 30 to 42% and was significantly different for the different root portions. The cyanogenic variety NASE 3 had higher cyanogenic potential (~ 150 ppm) compared to NASE 14 (66.2 ppm) and NAROCASS 1 (106.3 ppm). Cassava plants from the same variety and environment differed by up to 35% cyanogenic potential. Variations of up to 29% were also observed in the distribution of cyanide along the root. A tissue and time-dependent variation in accumulation of cyanide was observed with low level of variation within the middle root portion indicating possibility of middle portion as representative for estimating whole root cyanogenic potential. The results also indicate that higher sample numbers are needed in reducing the error of determination resulting from the wide differences within roots and plants of the same variety.

Journal

Proceedings of the National Academy of Sciences India Section B Biological Sciences – Springer Journals

Published: Jun 1, 2023

Keywords: Hydrogen cyanide; Cassava; Cyanogenesis; Root tissue; Variations

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