Accumulation of energy to vegetative and generative parts of win

Accumulation of energy to vegetative and generative parts of winter wheat plants

In plot experiments laid out in the potato productive area we observed the influence of diffe-rent doses and different time of nitrogen fertilisation to the accumulation of net energy into individual organs of winter wheat, cultivar Samanta. Plants were taken away in the develop-ment phase 39.DC, 87.DC and 91.DC.

According to our results we can state, that the influence of different dose and time of nitrogen fertilisation have no statistically significant appearance in accumulation of energy to dry matter unit of roots (13249,07 kJ), stalks, leaves (13080,53 kJ), spikes (15493,48 kJ). The same result was gained at total energy content in individual organs. Statistically significant differences were taken in individual phases of development, as there was observed growth of energy content to 1 g of dry matter at the end of vegetation.

Content of' energy in 1 g of dry matter was statistically significantly lowest in roots (15,7() kJ.g-1) compared with stalks and leaves (16,72 kJ.g-1) and spikes (16,46 kJ.g-1). Statistically non significant differences were found out at stalks and leaves to spikes. During statistic evolution of total content of energy in individual organs of wheat we haven't found out statistically significant differences among them.

Autor: F. Hnilička, V. Novák

Zdroj: 8th Days of Plant Physiology, Olomouc 7. - 10.7. 1998 (Book of Abstracts), p. 96,

1998