Tag Archives: Amaranthus tricolor L.

xxx S. Motyleva, E. Vlasova, N. Kozak, M. Gins and V. Gins
Morphological and anatomical characterization of Actinidia kolomikta (Rupr. & Maxim.) Maxim. (C3) and Amaranthus tricolor L. (C4) leaves
Abstract |

Morphological and anatomical characterization of Actinidia kolomikta (Rupr. & Maxim.) Maxim. (C3) and Amaranthus tricolor L. (C4) leaves

S. Motyleva¹*, E. Vlasova¹, N. Kozak¹, M. Gins² and V. Gins²

¹Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery, Zagorevskaj Str. 4, 115598 Moscow, Russia
²Federal Scientific Center of Vegetable Growing, Selectnaya Str., Moscow region, Odintsovsky urban district, 143080 VNIISSOK village, Russia
*Correspondence: motyleva_svetlana@mail.ru

Abstract:

Morphological and anatomical features of new cultivars with photosynthesis of C3 (Actinidia kolomikta (Rupr. & Maxim.) Maxim. cv. ‘Narodnaya’) and C4 (Amaranthus tricolor L. cv. ‘Valentina’) were established by light and scanning electron microscopy, as well as energy-dispersive analysis. The leaf lamina of Actinidia kolomikta cv. ‘Narodnaya’ has a dorsoventral anatomical structure, anomocytic stomata on the abaxial epidermis and two types of trichomes: multicellular, uniseriate hairs and multicellular bristle-like protrusions, containing raphids. The needle-like raphides are located in subepidermal layers along the veins. A vascular system of petiole consists of two upper concentric bundles and the crescentic vascular strand. A starch sheat is present. Raphides (needle-shaped and rectangular) are located in phloem and cortical parenchyma cells, contain Ca, K, Mg, P and Si. The leaf lamina of Amaranthus tricolor cv. ‘Valentina’ have the kranz-anatomy, dorsiventral mesophyll and contain druses. Betacyanins are concentrated in the epidermis and mesophyll, but are not present in the bundle sheath. The number of vascular bundles in petioles is odd-numbered and variable (from 5 to 13). Trichomes are multicellular, uniseriate, ending in a large oval cell. Cells with betacyanins are present in the epidermis cortex, and, rarely, the collenchyma and phloem of the petiole. Cells with betaxanthins are absent. A starch sheat is brightly pigmented with betacyanins. The crystall sand is deposited in the parenchyma cells of the cortex and pith of the petiole and contains Ca (mainly) and K oxalates. Druses in the leaf lamina additionally contain Mg and P.

Key words:

, , , , , , , ,