期刊
STARCH-STARKE
卷 65, 期 11-12, 页码 1069-1077出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/star.201300034
关键词
Allelic variation; Rice; Single-segment substitution line; Starch quality; Waxy gene
资金
- National High-tech 863' Program of China [2012AA101103]
- Dean Youth Innovation Fund of Anhui Academy of Agricultural Sciences [13B0115]
- National Key Basic Research '973' Program of China [2011CB111500]
- Anhui Provincial Science and Technology Research Project [12010302055]
- National Natural Science Foundation of China [31271791]
The Waxy locus is the major locus controlling AM synthesis in rice endosperm. To date, based on amylose phenotypes and four nucleotide polymorphisms in the Waxy gene, five common Waxy alleles, wx, Wx(t), Wx(g1), Wx(g2), and Wx(g3), had been identified. A better understanding of how the Waxy allelic variation controls rice starch properties is important for grain quality improvement. In this study, genetic effects of different Waxy alleles on rice starch properties were obtained by use of a set of single-segment substitution lines harboring five different Waxy alleles. The five Waxy alleles showed a wide variation in gel consistency (GC), gelatinization temperature (GT), and pasting viscosity parameters. The relative effects of the five Waxy alleles on GC values was wx>Wx(g3)>Wx(t)>Wx(g1)>Wx(g2), and the trend in the GT values was wx
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