primordium

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primordium

[prī′mȯrd·ē·əm]
(embryology)
References in periodicals archive ?
Shoot primordia were obtained from 8 calli and after being transferred to shoot multiplication media i.
Flower primordia may be initiated late in the previous growing season (Bowles, 1983), so precipitation in the previous growing season may better predict flowering than precipitation in the current growing season (Willson et al.
In the undifferentiated tissues of leaf primordia, the protodermis is unisseriate on both surfaces.
2014 "Effect of pruning system, cane size and season on inflorescence primordia initiation and inflorescence architecture of Vitis vinifera L.
Thus, it appears possible to adequately identify sowing times based on PQ and frost risk by assigning greater influence to the stage in which differentiation of flower primordia occurs and frost risks are lower.
Leaf and shoot primordia were detectable in callus after 21 days in culture and at day 31 vascular tissues and organized shoot were distinguished.
The microstructure of sagittal otoliths of Oncorhynchus mykiss alevins was characterized by the following five distinctive features: (i) absence of significant differences in the amount of micro-increments between pairs of sagittae, (ii) occurrence of micro-increments before hatching, (iii) a linear relationship between the otolith size and fish size, (iv) primary micro-increments very distinctives from the primordium to the otolith edge, and (v) occurrence of multiple primordia.
A short review of the normal embryonic development of the facial primordia is necessary before reviewing the factors that may interfere with this development leading to clefts of the lip and the palate.
De FRANCISCI, Primordia civitatis, Roma (Apollinaris), 1957, p.
nam quoniam per inane uagantur, cuneta necessest aut grauitate sua ferri primordia rerum aut ictu forte alterius.
Upon subsequent subculture, the compact creamish white callus organized into "Organogenic lumps" which organized into shoot and root primordia.