Changes in Ascorbic Acid Content during Growth and Development of Panicum miliaceum

Abstract

The present paper deals with changes in the ascorbic acid content of the shoot apex during its transformation from the vegetative to the reproductive state and its further development in Panicum miiaceum var. Samai Co. 1. Seedlings were exposed to 24-hour illumination, natural day, and 8 hours of illumination per day. Ascorbic acid was determined for the growing apex, stem, and leaf of the main shoot and for the individual branches produced on it at successive developmental stages.A It has been shown that in wheat and other plants the levels of AA2 and IAA are closely correlated with the transformation of the growing apex from the vegetative to the reproductive state and with the differentiation of spikelets and their constituent flowers (3, 4, 7-9). We undertook investigations on Panicum miliaceum to determine the AA content of the shoot apex and other parts of the main shoot and branches at different ontogenic stages.

Development, growth and chemical composition of the potato crop (solanum tuberosum L.). II. Tuber and whole plant

“…2). Therefore, important physiological contributions of ascorbic acid at photosynthesis, assimilation, protein biosynthesis and all processes of crop growth are described (Nanda & Tayal, 1976: Chinoy, 1984. Therefore, important physiological contributions of ascorbic acid at photosynthesis, assimilation, protein biosynthesis and all processes of crop growth are described (Nanda & Tayal, 1976: Chinoy, 1984.…”

L-Ascorbic Acid: Metabolism, Biosynthesis, Function

“…Rosanova (1946), while studying varia tions in the ascorbic acid content of leaves and fruit in wild rose species dur ing the growing season, found a correlation between ascorbic acid in the leaves and that in newly forming fruits in two high-accumulating species. Just prior to the transformation from vegetative to reproductive growth there is a severalfold increase in ascorbic acid in the growing apex of Panicum miliaceum (Nanda and Tayal, 1976). Her results prompted Rosanova to suggest that ascorbic acid was transported from the leaves to the fruits in the high accumulators while in the low accumulators, transport was hindered and accumulation of ascorbic acid in the fruits was realized at the expense of carbohydrate reserves within the fruit.…”