The article shows development of the variety testing network of the official system of right protection for plant varieties. The article defines on the art-of-the-day level the main problems and relevant solutions, and points out the importance of examination institutions of the official system of right protection for plant varieties for solving the food provision problem of the state.

In the article is substantiated the necessity for governmental investments on the innovation base and analysed the influence on the State system on right protection of plant varieties activity effectiveness.

The drought-resistance of 15 nectarine varieties and forms with a sign of male infertility is studied. The research identified genotypes with varying degrees of drought-resistance. The greatest degree of drought-resistance demonstrated the form 33-3-1, 512-86,41-15-2, and grade Kul'dzhinskiy 4x, Krymtsuht, Elbertaziya.

In the information advantages of plants of agricultural crops with photosynthesis C4 before plants of type C3 are shined. By means of genetically-modified designs uses introductions such C4 a metabolism, or its part the estimation of possibilities is spent to the main agricultural crops with C3 a metabolism.

Dynamics of technological and sowing indexes of grain of wheat winter-annual kinds of Natsionalna, Stolichna, Artemis in the course of long-term storage is studied. It is positioned that the best sowing indexes throughout all shelf-life the kind of Stolichna, and technological had a kind of Natsionalna. The optimum shelf-life of grain of investigated kinds has compounded six months.

The article highlights main causes and provides reasons for changes, depending on which methodological materials on the conduct of plant varieties examination on their stability for dissemination in Ukraine should be periodically republished.