Зерновое хозяйство России (May 2018)
The content of free proline in winter wheat during autumn-winter-spring periods
Abstract
The content of free proline in winter wheat during autumn-winter-spring periods The article considers the results of determination of the content of free proline in the leaves of winter soft wheat during autumn-winter-spring periods. The free amino acid proline is of great interest due to plant resistance to various stresses, including low zero temperatures. The maximum values can be seen at the beginning and in the middle of winter period, but there are not any significant differences in the content of proline among the studied samples under rather high temperatures. The frost tolerant varieties ‘Don 107’, ‘Asket’ and ‘Donskaya bezostaya’, developed in I.G. Kalinenko ARRIGC possess the maximum value of the content of free proline. The resistance to zero temperatures changes through the whole winter period. The safety of the winter wheat plants has been valued in the middle and at the end of the winter. The frost resistance of winter soft wheat drastically reduces by the spring. There has been determined correlation of the content of free proline and safety of plants during their freezing in the boxes in the chambers with zero temperatures.
