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Mutation breeding in Brazil

Journal Article:

Abstract

How mutation induction is used for plant breeding in Brazil is reported. For upland rice, the combined treatment with gamma-ray and mutagens (ethylene imine or ethylmethane sulfonate) has been used on the variety, Dourado Precoce, and some mutants with shortculm length and/or earliness without altering the productivity have been obtained. A project on the quantitative and qualitative protein improvement in upland rice was also started in 1979. In corn, the effect of gamma-irradiation on heterosis has been analyzed, and it was found that the single hybrids from two parental lines derived from irradiated seeds had increased ear productivity. For beans (Phaseolus yulgaris), gamma-irradiation and chemical mutagens have been used to induce the mutants with different seed color, disease resistance to golden mosaic virus and Xanthomonas phaseoli, earliness, high productivity and high protein content. Some mutants with partly improved characters have been obtained in these experiments. Two varieties of wheat tolerant to aluminum toxicity have been obtained, but the one showed high lodging due to its unfavorable plant height, and the other was highly susceptible to culm rust. Therefore, irradiation experiments have been started to improve these characters. The projects involving the use of gamma-irradiation have been tested to obtain the  More>>
Authors:
Neto, A T; Menten, J O.M.; [1]  Ando, A
  1. Centro de Energia Nuclear na Agricultura, Piracicaba (Brazil)
Publication Date:
Mar 01, 1980
Product Type:
Journal Article
Reference Number:
AIX-12-634776; EDB-82-023104
Resource Relation:
Journal Name: Gamma Field Symp.; (Japan); Journal Volume: 18
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; BRAZIL; GENETIC RADIATION EFFECTS; PLANT BREEDING; MAIZE; PAPAYAS; PEPPERS; PHASEOLUS; RICE; SORGHUM; SOYBEANS; SUGAR CANE; WHEAT; DISEASE RESISTANCE; GAMMA RADIATION; MUTANTS; MUTATIONS; PRODUCTIVITY; PROTEINS; SEEDS; BIOLOGICAL EFFECTS; BIOLOGICAL RADIATION EFFECTS; CEREALS; DEVELOPING COUNTRIES; ELECTROMAGNETIC RADIATION; FOOD; FRUITS; GENETIC EFFECTS; GRAMINEAE; GRASS; IONIZING RADIATIONS; LATIN AMERICA; LEGUMINOSAE; ORGANIC COMPOUNDS; PLANTS; RADIATION EFFECTS; RADIATIONS; SOUTH AMERICA; VEGETABLES; 560142* - Radiation Effects on Plants- Applications- (-1987)
OSTI ID:
5995638
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: GFSYA
Submitting Site:
INIS
Size:
Pages: 49-58
Announcement Date:

Journal Article:

Citation Formats

Neto, A T, Menten, J O.M., and Ando, A. Mutation breeding in Brazil. Japan: N. p., 1980. Web.
Neto, A T, Menten, J O.M., & Ando, A. Mutation breeding in Brazil. Japan.
Neto, A T, Menten, J O.M., and Ando, A. 1980. "Mutation breeding in Brazil." Japan.
@misc{etde_5995638,
title = {Mutation breeding in Brazil}
author = {Neto, A T, Menten, J O.M., and Ando, A}
abstractNote = {How mutation induction is used for plant breeding in Brazil is reported. For upland rice, the combined treatment with gamma-ray and mutagens (ethylene imine or ethylmethane sulfonate) has been used on the variety, Dourado Precoce, and some mutants with shortculm length and/or earliness without altering the productivity have been obtained. A project on the quantitative and qualitative protein improvement in upland rice was also started in 1979. In corn, the effect of gamma-irradiation on heterosis has been analyzed, and it was found that the single hybrids from two parental lines derived from irradiated seeds had increased ear productivity. For beans (Phaseolus yulgaris), gamma-irradiation and chemical mutagens have been used to induce the mutants with different seed color, disease resistance to golden mosaic virus and Xanthomonas phaseoli, earliness, high productivity and high protein content. Some mutants with partly improved characters have been obtained in these experiments. Two varieties of wheat tolerant to aluminum toxicity have been obtained, but the one showed high lodging due to its unfavorable plant height, and the other was highly susceptible to culm rust. Therefore, irradiation experiments have been started to improve these characters. The projects involving the use of gamma-irradiation have been tested to obtain the mutant lines insensitive to photoperiod and resistant to bud-blight in soybean, the mutant lines resistant to mosaic virus in papaya, the photoperiod-insensitive mutants in sorghum, the mosaic virus resistant and non-flowering mutants in sugar cane, and the Fusarium and nematode-resistant mutants in black pepper.}
journal = {Gamma Field Symp.; (Japan)}
volume = {18}
journal type = {AC}
place = {Japan}
year = {1980}
month = {Mar}
}