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Gamma ray induced mutants in Coleus

Abstract

The germplasm collection of Chinese potato (Coleus parviflorus Benth) contains almost no variation for yield contributing traits. The crop does not produce seeds. Treatment of underground tubers with 1 kR, 2 kR, 3 kR and 4 kR gamma rays resulted in 50 morphologically different mutants which are maintained as mutant clones. In the M{sub 1}V{sub 1} generation, suspected mutant sprouts, were carefully removed and grown separately. The most interesting mutant types are the following: (i) erect mutant with spoon shaped light green leaves, 30 cm long inflorescences against 20 cm in the control, cylindrical tubers measuring ca. 7.0 cm long and 3 cm girth against 4 cm and 2.5 cm in the control (ii) early mutants 1 and 2, one having less leaf serration, the other having light green small leaves and dwarf type (iii) fleshy leaf mutant, dark green, thick and smooth leaves. Control plants spread almost in 1 m{sup 2} area and bear tubers from the nodes of branches. In the early mutants tuber formation is mainly restricted to the base of the plant, which makes harvest easier. The crop usually matures within 150 - 160 days, the early mutants are ready for harvest 100 days after planting.  More>>
Authors:
Vasudevan, K; Jos, J S [1] 
  1. Central Tuber Crops Research Institute, Trivandrum, Kerala (India)
Publication Date:
Jul 01, 1988
Product Type:
Technical Report
Report Number:
INIS-XA-480
Resource Relation:
Other Information: 1 tab; PBD: Jul 1988; Related Information: In: Mutation breeding newsletter. No. 32, 36 pages.
Subject:
60 APPLIED LIFE SCIENCES; GENETIC VARIABILITY; HERBS; MAGNOLIOPSIDA; MORPHOLOGICAL CHANGES; PLANT BREEDING; PLANT GROWTH; PRODUCTIVITY; RADIATION INDUCED MUTANTS; TUBERS
OSTI ID:
20244503
Research Organizations:
Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 1011-260X; TRN: XA0201323017207
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
page(s) 5
Announcement Date:

Citation Formats

Vasudevan, K, and Jos, J S. Gamma ray induced mutants in Coleus. IAEA: N. p., 1988. Web.
Vasudevan, K, & Jos, J S. Gamma ray induced mutants in Coleus. IAEA.
Vasudevan, K, and Jos, J S. 1988. "Gamma ray induced mutants in Coleus." IAEA.
@misc{etde_20244503,
title = {Gamma ray induced mutants in Coleus}
author = {Vasudevan, K, and Jos, J S}
abstractNote = {The germplasm collection of Chinese potato (Coleus parviflorus Benth) contains almost no variation for yield contributing traits. The crop does not produce seeds. Treatment of underground tubers with 1 kR, 2 kR, 3 kR and 4 kR gamma rays resulted in 50 morphologically different mutants which are maintained as mutant clones. In the M{sub 1}V{sub 1} generation, suspected mutant sprouts, were carefully removed and grown separately. The most interesting mutant types are the following: (i) erect mutant with spoon shaped light green leaves, 30 cm long inflorescences against 20 cm in the control, cylindrical tubers measuring ca. 7.0 cm long and 3 cm girth against 4 cm and 2.5 cm in the control (ii) early mutants 1 and 2, one having less leaf serration, the other having light green small leaves and dwarf type (iii) fleshy leaf mutant, dark green, thick and smooth leaves. Control plants spread almost in 1 m{sup 2} area and bear tubers from the nodes of branches. In the early mutants tuber formation is mainly restricted to the base of the plant, which makes harvest easier. The crop usually matures within 150 - 160 days, the early mutants are ready for harvest 100 days after planting. As the mutants are less spreading, the yield could be increased by closer spacing.}
place = {IAEA}
year = {1988}
month = {Jul}
}