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. 2009 Dec 14;4(12):e8231. doi: 10.1371/journal.pone.0008231

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Robbins et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A. Diverse p1 alleles conferring different pericarp and cob glume pigmentation patterns. B. Representative ears of P1-mm stocks that differ with respect to their pigmentation. P1-mm-H exhibits a range of heavy variegated pericarp pigmentation and light red cob pigmentation; whereas P1-mm-L has light variegated pericarp pigmentation and light pink or colorless cob glume pigmentation. P1-mm-7F32 and P1-mm-542A are self-red revertant stocks of P1-mm derived from P1-mm-H. C. Representative ears from the P1-mm-d stock showing several possible pigmentation phenotypes. P1-wr-d ears with variegated and colorless pericarp pigmentation are shown. Also shown is an ear that displayed a red cob glumes sector in which the presence of cob pigmentation correlated with a stable “silk scar” type of pigmentation on the pericarp. D. PCR analysis to compare P1-mm alleles (see Table 1) with previously studied p1 alleles. Based on the amplification patterns, the P1-mm alleles could be classified as molecularly similar to P1-wr [W23].