Abstract Of 520 F1 interline, variety-line and intervarietal hybrids produced by diallel crosses
between short and tall varieties during 1973-76, the highest yielding were those obtained by …

In a study of F1 hybrids obtained from a full diallel cross involving eight inbred lines,
heterosis was found for such characters as stem height, diameter of head, 1000-seed …

The use of heterosis breeding for improving seed yield is reviewed under the following
headings: breeding of inbred lines; breeding of restorer lines; breeding of lines with high …

Of 125 direct and reciprocal single crosses obtained without emasculation by artificial
hybridization between S3-S4 inbred lines derived mainly from Russian material, 27 gave …

F1 hybrids from diallel crosses of four lines were studied. The greatest differences in general
combining ability were found for plant height and yield of seeds per head. A high specific …

In a study of hybrids from topcrosses between the variety Mayak and short lines with a
somewhat lower 1000-achene weight than that of normal sunflowers, 271 hybrids (88.6%) …

From a study of the effects of inbreeding and sib crossing on eleven traits over six
generations in the strain Ruzynska 9, it is concluded that the most suitable method for …

Top-cross hybrids were produced between 30 Soviet varieties with a high oil content and
three testers used as the pollen parents. Of the 260 F1 hybrids studied, 28.3% showed 10 …

Varieties of Russian and foreign origin which show good combining ability are listed. For the
development of varieties with high oil content it is considered necessary that both parents …

Thirty-five hybrids of 20 chemically and physically induced mutant lines, originally from
VNIIMK8931 X Chernyanka X (T18 X Smena [Change], were compared with the parents …