Endogenous rhythms of daily growth of annual shoots of almond willow (Salix triandra l.) Against the background of early-summer drought

Afonin A.

The necessity of studying the laws of development of shoots of almond willow (Salix triandra) on the background of rainfall deficit in early-summer period. Objective: to identify patterns of growth of shoots against the background of early-summer rainfall deficit. Object: seedlings of inbred families of almond willow. Material: growing annual shoots. Methods: selection, comparative morphological. Differential resistance to water stress is revealed. The maximum length of shoots is 2.5...3.0 m. The cyclical growth of shoots is determined by endogenous rhythms of development. High-yielding clones recommended for breeding of almond willow for drought tolerance.

Keywords:almond willow, Salix triandra, annual shoots, daily growth, water stress, short-term drought, early-summer drought