Cultivated Rice Varieties viewed from Root Characters : (III) Ferrous coatings in root

Excised Embryo Culturing in the Study of Inheritance of Root Types in Rice

“…In this experiment, from the nature of distribution it is very difficult to say to what extent this variation is due to the additive or interaction genetic variance. The pooled mean of the root lengths and the pooled mean of the number of roots in the case of F2 plants (Table 4 & 5) are close to the parental means (6.36 cm in case of root length and 3.01 in case of number of roots), which indicate absence of any dominance in regard to these characters.…”

Iron‐induced Oxygen Radical Metabolism in Waterlogged Plants

“…However, it is th e reduced ferrous (Fe2+) form which is actually absorbed by roots (Chaney, Browt & Tiffin, 1972). It is recognized that many plant species or varieties of species fre sensitive to and intolerant of high iron concentrations (Nagai & Maturo, 1959;Kuraev, 1966;Jones & Etherington, 1970;Howeller, 1973). The presence of high ferrous ion concentrations may therefore be an important determinant in excluding many species from wetland sites The mechanism underlying iron toxicity in plants is not well understood (Foy, Chaney & White 1978) This is further confounded by the lack of consensus on mechanisms of w'aterlogging tolerance (Crawford, 1972;ap Rees & Wilson, 1984;Smith, Kalsi & Woolhouse, 1984).…”