Germination of Rice Embryo under Water and its Relation of Growth to Endosperm Fractions

Abstract

IT is a well-known fact that rice seeds are capable of germination under water and the coleoptile of the rice embryo grows more rapidly and more extensively under water than in air. Yamada¹ suggested that the superior growth of the rice coleoptile under water is due to the decreased capacity of the coleoptile tissue for destroying auxin under water as compared to the extensive capacity of the tissue for destroying auxin in air. Sircar and Das² have shown that the auxin of the rice endosperm gradually decreases with the growth of the coleoptile and root; such gradual consumption of auxin is stopped abruptly when the embryo is detached from the endosperm.