Maturing seed root growth and metabolism

Embryo organs from the maturing seeds of a dwarf French bean (Phaseolus vulgaris L.) were used [1]. Detailed study of growth of the hypocotyl-embryo root axis using anatomical preparations has shown that the final size of the root cap (about 250 μ) is achieved and its growth is completed by the 20th day, that of the root by the 34th and of the hypocotyl by the 40th day after anthesis. It should be noted that while the size of the embryo root increases (3-fold) during early maturation and stabilizes by the 30th day (1.75 mm), the size of the hypocotyl gradually increases during the whole maturation period.