Formation of Root Hair in Crown Roots of Rice Plants and Carbohydrates

Abstract

The effects of defoliation, shading, and foliar application of sugar on root hair formation and growth in crown roots has not yet been determined. The present investigation was carried out to study the morphogenetical effects of carbohydrates on the development of root hairs in crown roots. The following results were obtained. Roots of plants cultured in the control plot bore root hairs longer and more dense than those in the defoliated and shaded plots (Table 3 and 4). The foliar application of sugar accelerated the formation and growth of root hairs (Table 5). It was also found that glucose (10%) is somewhat superior to, or as effective as, sucrose and fructose in aiding root hair formation and growth in rice seminal roots cultured by "bi-media culture". It is evident that a prima facie connection exists between root hair formation and carbohydrates supplied from the top.