Inheritance of low pasting temperature in sweetpotato starch and the dosage effect of wild-type alleles

Sweetpotato (Ipomoea batatas (L.) Lam.), which is an outcrossing hexaploid, is one of the most important starch-producing crops in the world. During the last decade, new sweetpotato cultivars, e.g. 'Quick Sweet', which have approximately 20°C lower pasting temperature, slower retrogradatio...

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Veröffentlicht in:Breeding science. - 1998. - 65(2015), 4 vom: 01. Sept., Seite 352-6
1. Verfasser: Katayama, Kenji (VerfasserIn)
Weitere Verfasser: Tamiya, Seiji, Sakai, Tetsufumi, Kai, Yumi, Ohara-Takada, Akiko, Kuranouchi, Toshikazu, Yoshinaga, Masaru
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Breeding science
Schlagworte:Journal Article gene-dosage effect inheritance pasting temperature polyploid starch sweetpotato
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520 |a Sweetpotato (Ipomoea batatas (L.) Lam.), which is an outcrossing hexaploid, is one of the most important starch-producing crops in the world. During the last decade, new sweetpotato cultivars, e.g. 'Quick Sweet', which have approximately 20°C lower pasting temperature, slower retrogradation and higher digestibility of raw starch than ordinary cultivars, have been developed in Japan. Genetic analysis of these variants with low pasting temperature starch was conducted in this study. Using 8 variants and 15 normal clones, 26 families were generated. The results from analyzing these progenies suggested that this trait is a qualitative character controlled by one recessive allele (designated spt), which is inherited in a hexasomic manner. A dosage effect of the wild-type Spt allele was found for starch pasting temperature, although the effect was not linear. These results will aid breeders to develop sweetpotato cultivars with a range of starch pasting temperatures 
650 4 |a Journal Article 
650 4 |a gene-dosage effect 
650 4 |a inheritance 
650 4 |a pasting temperature 
650 4 |a polyploid 
650 4 |a starch 
650 4 |a sweetpotato 
700 1 |a Tamiya, Seiji  |e verfasserin  |4 aut 
700 1 |a Sakai, Tetsufumi  |e verfasserin  |4 aut 
700 1 |a Kai, Yumi  |e verfasserin  |4 aut 
700 1 |a Ohara-Takada, Akiko  |e verfasserin  |4 aut 
700 1 |a Kuranouchi, Toshikazu  |e verfasserin  |4 aut 
700 1 |a Yoshinaga, Masaru  |e verfasserin  |4 aut 
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