Bicellular microhairs on the adaxial surface lacking; adaxial epidermal cells equal to sub-equal to the abaxial epidermal cells (excluding the bulliform cells) .
Fusoid cells short and wide; bicellular microhairs on the adaxial surface developed.
Each bicellular microhair is composed of a basal cell and a cap cell, attached to or embedded in the leaf epidermis (Levering & Thomson, 1971; Oross & Thomson, 1982a; Naidoo & Naidoo, 1998; Somaru et al.
Bicellular trichomes of johnsongrass (Sorghum halepense) leaves morphology, histochemistry and function.
The unicellular microspores and bicellular pollen were mixed with these bacterial suspensions, respectively, and then slowly shaking cultured for different times (5, 10, 15 and 20 min).
6 mm, and bicellular pollen an additional 1-2 days later, and tricellular pollen a further 1-2 days later.
The curled ciliated auricles showed bicellular
trichomes of ca.
However, it is relevant in biological terms, since it reflects that totipotency of male gametophytes would not be restricted to the stage of vacuolate microspore-early bicellular
pollen, as is widely accepted.
Though leaf epidermal bicellular
microhairs resembling salt glands have been observed in all grass subfamilies except Pooideae (Amarasinghe and Watson, 1988; Liphschitz and Waisel, 1982), functioning salt glands have been found only within the subfamily Chloridoideae (Amarasinghe and Watson, 1989).
Massulatae orchids also behave synchronously in this respect, because the cytomictic channel persists until the early bicellular
stage (Heslop-Harrison, 1968).
Although multicellular microhairs have more than two cells in Joinvilleaceae and some early-diverging lineages (where they are bi- and multicellular), they are bicellular
in most Poaceae.
foliar secretory and tubular cavities in A.