Starch quality

Development of cassava periclinal chimera may boost production

N. Bomfim and Nassar, N. M. A., Development of cassava periclinal chimera may boost production, vol. 13, pp. 819-830, 2014.

Plant periclinal chimeras are genotypic mosaics arranged concentrically. Trials to produce them to combine different species have been done, but pratical results have not been achieved. We report for the second time the development of a very productive interspecific periclinal chimera in cassava. It has very large edible roots up to 14 kg per plant at one year old compared to 2-3 kg in common varieties. The epidermal tissue formed was from Manihot esculenta cultivar UnB 032, and the subepidermal and internal tissue from the wild species, Manihot fortalezensis.

Correlation analysis between starch properties and single nucleotide polymorphisms of waxy genes in common rye (Secale cereale L.)

M. Meng, Gao, X., Han, L. J., Li, X. Y., Wu, D., Li, H. Z., and Chen, Q. J., Correlation analysis between starch properties and single nucleotide polymorphisms of waxy genes in common rye (Secale cereale L.), vol. 13, pp. 2574-2589, 2014.

To understand the relationships between single nucleotide polymorphisms (SNPs) in the waxy gene and starch parameters in common rye, we performed sequence characterization, enzyme activity testing, amylopectin/amylose ratio evaluation, starch property testing, and correlation analysis. Specific primers were used to clone waxy from 20 rye cultivars. Sequence analysis showed that waxy was 2852 bp, including 11 exons, and sequence similarity across the 20 cultivars was over 98%.

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