Ribosomal Changes during Induction of Cold Hardiness in Black Locust Seedlings

Study of Phenological Changes in Black Locust using Descriptive Methods and Quantitative Analysis

    Studying the phenological stages and determining their occurrence in different biological conditions is useful instrumental in restoring and selecting the bases in forestry. Therefore, descriptive method and quantitative analysis were used to study the phenology of Black Locust (Robinia pesudoacacia L.). In descriptive method, the phenomenological observations were recorded during the speci...

Cold Hardiness of Woody Plants

stresses caused by their freezing and thawing. A key difference between a hardy plant and a non-hardy plant is believed to be where the ice forms in freezing: inside the living cells or outside of them. If ice forms inside of cells, it is almost always fatal to them, and this is probably the principal cause of frost kill in non-hardy plants. Normally hardy tissue may be killed by moderate tempe...

Adaptive Changes in ATPase Activity in the Cells of Winter Wheat Seedlings during Cold Hardening.

A cytochemical study of ATPase activity in the cells of cold hardened and nonhardened winter wheat (Triticum aestivum L. cv. Nongke No. 1) seedlings was carried out by electron microscopic observation of lead phosphate precipitation. ATPase activity associated with various cellular organelles was altered during cold hardening. (a) At 22 degrees C, high plasmalemma ATPase activity was observed i...

Characterization and Role of an Endogenous Inhibitor in the Induction of Cold Hardiness in Acer negundo.

An inhibitor extracted from short day treated Acer negundo leaves was compared to abscisic acid in 4 different solvent systems. The chromatographic properties of abscisic acid and the inhibitor were in very close agreement. Treatment of Acer negundo plants under non-hardening preconditions (long days) with either the inhibitor or abscisic acid increased hardiness after a hardening period of 3 w...

Measuring Cold Hardiness in Woody Plants