crassipes population growth than adult weevils because larvae tunnel through plant tissues (Cilliers 1991) and can damage meristems
(Stark & Goyer 1983; Center et al.
Pastures deferred at elevated heights in the beginning of the fall usually have a greater number of tillers with a remaining apical meristem
and, in such condition, photoassimilates are preferentially reallocated for the development and maintenance of the existing tillers (ROBSON et al.
This study showed that Sainfoin meristem
explant, BAP and 2,4-D together were important for callogenesis and for regeneration only BAP was effective.
Micropropogation: Lateral meristem
explants cultured on MS, containing 3% (w/v) sucrose and 0.
Beyond that, of course, is the possibility of the endophyte's presence in the host's apical meristem
that will need to be explored.
The tissue organization in the adventitious roots appear normal with a well-defined root cap and root apical meristem
in each root.
After anthesis, the ovary presents uniseriate outer epidermis and mesophyll with three tissue regions: 1) An outer parenchymatous region, with thin-walled cells that vary in size and shape, and may present druses; 2) A middle region that originates from the middle meristem
and consists of elongated cells that are oriented obliquely or transversely to the longitudinal axis of the ovary; and 3) An inner region that is uniseriate and has short palisade-like cells.
Cryopreservation of apical meristems
of white clover (Trifolium repens L.
The vitrification (glass formation) procedure for cryopreservation eliminates the need for controlled slow freezing and permits cells and meristems
to be cryopreserved by direct transfer into liquid nitrogen (Langis et al.
The tissues of a plant include the epidermis, xylem, phloem, ground tissue, and meristems
Root and shoot meristems
are essentially identical, except that shoot meristems
are protected by young leaves being initial at the apex; root meristems
are protected by a root cap, a group of cells that arises from the apex and provide a loose covering for it.
To observe new leaf+shoot development in aspen over a 60-day period, the top meristems
of both simulated browse treatments and unbrowsed controls were harvested in January 2006, and incubated in a growth chamber that simulated local springtime conditions.