A Bread Wheat Mutant with Low Amylose Content Induced by Ethyl Methanesulphonate.

Oda, Shinya; Kiribuchi, Chikako; Seko, Hidefumi

doi:10.1270/jsbbs1951.42.151

Cited by 15 publications

(13 citation statements)

References 3 publications

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“…Because the reagent grade of potato amylopectin (Sigma) showed a faint absorbance, data were corrected on the basis of background absorbance. As a result, apparent amylose contents obtained in this study were somewhat lower than those of previous studies (Oda et al 1992 (Table I). Nakamura et al (1995) showed that WHW lacks Wx-Al, -Bl and -Dl proteins, but N61 has all these three Wx proteins.…”

Section: Viscoelastic Propertiescontrasting

confidence: 84%

Quality Characteristics of Waxy Hexaploid Wheat (Triticum aestivum L.): Properties of Starch Gelatinization and Retrogradation

Hayakawa¹,

Tanaka²,

et al. 1997

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Cereal Chem. 74(5):576-580The viscoelastic properties and molecular structure of the starch isolated from waxy (amylose-free) hexaploid wheat (WHW) (Triticum aestivum L.) were examined. WHW starch generally had lower gelatinization onset temperature, peak viscosity, and setback than the starch isolated from normal hexaploid wheat (NHW). Differential scanning calorimetry (DSC) showed that WHW starch had higher transition temperatures (T o , T p , and T c ) and enthalpy (∆H) than NHW starch. However, when compared on the basis of amylopectin (AP) content, ∆H of WHW starch was almost statistically identical to that of its parental varieties. Typical Atype X-ray diffraction patterns were observed for the starches of WHW and its parental varieties. Somewhat higher crystallinity was indicated for WHW starch. WHW starch was also characterized by having greater retrogradation resistance. The high-performance size-exclusion chromatography (HPSEC) of amylopectin showed that each amylopectin yielded two fractions after debranching. Although WHW amylopectin had somewhat long B chains, little difference was observed in the ratio of Fr.III/ Fr.II between WHW and its parental varieties.

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Section: Viscoelastic Propertiescontrasting

confidence: 84%

Quality Characteristics of Waxy Hexaploid Wheat (Triticum aestivum L.): Properties of Starch Gelatinization and Retrogradation

Hayakawa¹,

Tanaka²,

et al. 1997

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“…In addition, mutagen treatment of the two lowamylose cultivars seems also to be effective in producing waxy mutants. Recently, mutants with much lower amylose content and Wx protein amounts than K107 have been selected from ethyl methanesulphonate-treated seeds of K107 (ODA et al 1992). The reason for this may be that the Wx loci of K107 are susceptible to mutagens since only one Wx locus is active.…”

Section: Discussionmentioning

confidence: 99%

Decrease of Waxy (Wx) Protein in Two Common Wheat Cultivars with Low Amylose Content

Nakamura

Yamamori²,

Hirano

et al. 1993

Plant Breeding

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Two cultivars with a low amylose content, Kanto107 (K107) and K79, were discovered in Japanese common wheat (Triticum aestivum L.). The amount of Wx protein, identified as a single major starch granule‐bound protein of about 61 kD by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS‐PAGE), was greatly decreased in those two cultivars. Analysis of their Wx protein with a modified SDS‐PAGE and two dimensional‐PAGE showed that two of the three Wx proteins, produced by Wx‐A1 and Wx‐B1 loci, were not detected. It was thus concluded that only one locus, Wx‐D1, was active in the two low amylose cultivars. These mutants were termed “partial waxy mutants” and considered to be very useful material for breeding waxy wheat.

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“…Koshihikari, showed traces of l6-kDa and 26 kDa polypeptides and contained a high level of a 13 kDa polypeptide. Oda et al (1992) obtained a bread wheat mutant with low amylose content induced by ethyl methanesulphonate. In Triticum species, no mutants with 'waxy' endosperm have been reported except for one in T. monococcum with glutinous, 'waxy' endosperm starch (Kanzaki and Noda, 1988).…”

Section: Changes In Morphophysiological Characteristics Of the Plantmentioning

confidence: 99%

Induced Mutation in Plant Breeding: Current Status and Future Outlook

Donini

Sonnino

1998

Somaclonal Variation and Induced Mutations in Crop Improvement

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A Bread Wheat Mutant with Low Amylose Content Induced by Ethyl Methanesulphonate.

Cited by 15 publications

References 3 publications

Quality Characteristics of Waxy Hexaploid Wheat (Triticum aestivum L.): Properties of Starch Gelatinization and Retrogradation

Quality Characteristics of Waxy Hexaploid Wheat (Triticum aestivum L.): Properties of Starch Gelatinization and Retrogradation

Decrease of Waxy (Wx) Protein in Two Common Wheat Cultivars with Low Amylose Content

Induced Mutation in Plant Breeding: Current Status and Future Outlook

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