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Improvement of cassava for high dry matter, starch and low cyanogenic glucoside content by mutation induction

Abstract

Cassava (Manihot esculenta Crantz) is an important food in Nigeria. One drawback in its use as a staple food is the presence of cyanogenic glucosides which on hydrolysis produce the very toxic hydrogen cyanide (HCN). To reduce the cyanogenic levels by mutation induction, three locally adopted and high yielding varieties of cassava, TMS 30572, NR 8817 and NR 84111 were irradiated with 20, 25 and 30 Gy gamma rays. There were a wide variation in HCN, dry matter and starch content of irradiated cassava plants, screened in the MV{sub 2} propagation. Fourteen cassavavariant lines were selected for low HCN content, and 22 lines for high dry matter content. These will be further tested for yield in replicated field trials. (author). 7 refs, 3 tabs.
Authors:
Nwachukwu, E C; Mbanaso, E N.A.; Ene, L S.O. [1] 
  1. Plant Breeding Div., National Root Crops Research Inst., Umudike, Umuahia (Nigeria)
Publication Date:
Jul 01, 1997
Product Type:
Conference
Report Number:
IAEA-TECDOC-951; CONF-9510444-
Reference Number:
SCA: 553002; PA: AIX-28:054952; EDB-97:113814; SN: 97001834296
Resource Relation:
Conference: Final research coordination meeting on improvement of basic food crops ion Africa through plant breeding, including the use of induced mutations, Naples (Italy), 30 Oct 1995; Other Information: PBD: Jul 1997; Related Information: Is Part Of Improvement of basic food crops in Africa through plant breeding, including the use of induced mutations. Proceedings of a final research co-ordination meeting; PB: 145 p.
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; CASSAVA; PLANT BREEDING; RADIATION INDUCED MUTANTS; BIOMASS; CYANOGEN; PRODUCTIVITY; STARCH
OSTI ID:
511793
Research Organizations:
Joint FAO/IAEA Div. of Nuclear Techniques in Food and Agriculture, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1011-4289; Other: ON: DE97637601; CNN: Contract IAEA-R-5422/JG; TRN: XA9744557054952
Availability:
INIS; OSTI as DE97637601
Submitting Site:
INIS
Size:
pp. 93-98
Announcement Date:

Citation Formats

Nwachukwu, E C, Mbanaso, E N.A., and Ene, L S.O. Improvement of cassava for high dry matter, starch and low cyanogenic glucoside content by mutation induction. IAEA: N. p., 1997. Web.
Nwachukwu, E C, Mbanaso, E N.A., & Ene, L S.O. Improvement of cassava for high dry matter, starch and low cyanogenic glucoside content by mutation induction. IAEA.
Nwachukwu, E C, Mbanaso, E N.A., and Ene, L S.O. 1997. "Improvement of cassava for high dry matter, starch and low cyanogenic glucoside content by mutation induction." IAEA.
@misc{etde_511793,
title = {Improvement of cassava for high dry matter, starch and low cyanogenic glucoside content by mutation induction}
author = {Nwachukwu, E C, Mbanaso, E N.A., and Ene, L S.O.}
abstractNote = {Cassava (Manihot esculenta Crantz) is an important food in Nigeria. One drawback in its use as a staple food is the presence of cyanogenic glucosides which on hydrolysis produce the very toxic hydrogen cyanide (HCN). To reduce the cyanogenic levels by mutation induction, three locally adopted and high yielding varieties of cassava, TMS 30572, NR 8817 and NR 84111 were irradiated with 20, 25 and 30 Gy gamma rays. There were a wide variation in HCN, dry matter and starch content of irradiated cassava plants, screened in the MV{sub 2} propagation. Fourteen cassavavariant lines were selected for low HCN content, and 22 lines for high dry matter content. These will be further tested for yield in replicated field trials. (author). 7 refs, 3 tabs.}
place = {IAEA}
year = {1997}
month = {Jul}
}