WheatBP

Back to cerealsdbDevelopment Home Germination Early growth and tillering Stem elongation Wheat apex development Flowering and fertilisation Pollen release Grain growth 1 to 4 days Grain growth 4 to 10 days Cell layers inside a grain Grain filling 11 to 16 days Grain filling 17 to 21 days Whole grain photographs Endosperm micrographs Embryo micrographs
Grain filling 21 to 30 days Development of the embryo Dry down 30 to 40 days How we grew the plants Photography and microscopy
DAYS = days after flowering

Grain filling 17 to 21 days

Embryo micrographs

	The embryo digests the contents of the endosperm cells closest to the scutellum producing the 'crushed cell layer'. Processes involved in breaking down the endosperm in this area are probably similar to those used to break down endosperm during seed germination.
	(same as above) In a beam of polarized light the Type 'A' and Type 'B' starch grains diffract the light producing a characteristic 'Maltese Cross'. The type 'A' grains are larger than the type 'B' and are produced first.
	20 days after flowering and the embryo is developing very rapidly. The shoot pole now has a coleoptile enclosing primordial leaves and the root pole has a differentiated root cap. Inside the root we can see the cell files of the stele and the cortex. The small flap of tissue in the middle of the dorsal side is the epiblast, which has little morphological significance (allegedly).

For information on this web site, please contact: Mark.Winfield