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. 2022 Aug 6;11(15):2056. doi: 10.3390/plants11152056

Figure 1.

Figure 1

Seed coat diversity and structure in Pisum sativum L. (A) Selected dry pea seeds at maturity illustrate the breadth of seed coat color, size, and texture phenotypes that are attributed to the seeds. (B) Seed coat enriched in proanthocyanidins appear purple (1-22770A) and red (5-No. 3257). Seeds lacking proanthocyanidins appear yellow (2-CDC Amarillo). The color of the seed coat can be homogeneous (1-22770A, 3-PLP 174, 5-No. 3257, and 6-Kairyo Aotenashi), variegated (4-PLP 70 and 7-Uladovskij 208) or speckled (8-Biselia). (C) Cross-section of the pea seed (2-CDC Amarillo) revealing layers of a maturing seed coat. Layers visible here include an outermost epidermis of macrosclereids (m), a subepidemis of osteosclereids (o), and underlying seed coat parenchyma (p), with the chlorenchyma sub-layer visible.