EFFICIENCY OF APPLICATION OF PREPARATION MALTAMIN IN HYBRID SEED-GROWING OF WHITE CABBAGE
Results of studying of efficiency of use of plant growth regulator Maltamin in hybrid seed-growing are presented. Маltamin was applied prior to preseeding processing of seeds of a maternal parental line with cyto-plasmatic male's sterility Er7 ms of the late-ripening hybrid of Avatars F1 cabbage and fertile analogue of the given line - Er7 f and not root spraying of uterine plants, cultivated for the subsequent reception of seeds. It has been found that Маltamin has favorable influence already at early stages of plants evolution. Soaking of cabbage seeds in 0,0025, 0,05 and 0,01 % solution of a growth regulator Маltamin within 12 h enhances energy of germination of sterile line Er7 ms white cabbage from 84 to 86-88 %, seeds germination - by 6-8 % and length of a root of a sprout - by 0,6-0,7 cm. These indicators for fertile analogue Er7 f increased by 4,0, 6,0 % and 0,6-0,9 cm accordingly. Character of action of Maltamin growth regulator on the growth and evolution of cabbage uterine has been found, grown up in the field and in vegetative vessels. Plants of cabbage of sterile line Er7 ms, grown up in the field, effected by Маltamin were stockier (by 5-13 cm lower), formed larger socket of greater quantity (by 4-10 piece), diameter (by 12-22 cm) and the area (by 0,9-2,2 m<sup>2</sup>) of leaves, than in the control. Cultivation of these mother liquor in vegetative vessels with preparation application in 0,01 and 0,05 % concentration resulted in the increase of quantity of leaves (over 3-4 pieces), heights of plants (by 7 and 9 cm), and at processing with 0,01 % solution - to formation of the socket of leaves greater diameter. Plants of other variants have this indicator at level of the control or a little bit more low. The crude weight of roots and surface part of the plants which have been grown up in vegetative vessels, was up to standard of the control, and the efficiency factor has made 1:4,4-1:5,6. The weight of roots of the plants which have been grown up in the field with the use of growth regulator, decreased, and the weight of surface part - increased. Factor of plants efficiency - 1:24, 3-1:32,2. That is in field conditions under the influence of the preparation there are optimum conditions for growth and development of plants and the same weight of roots can provide with water and elements of a mineral nutrition a greater surface part of plants. The Maltamin growth regulator effect on plants of fertile analogue of cabbage Er7 f was of similar character.