Analysis of xenia in F_1 seeds of yellow-grain winter-rye lines

摘要

F_1 hybrid grains from the topcross of 90 winter rye yellow-seed inbred lines with the green-seed tester SMH-108 were analysed. Our previous results on the relation between crossing ability and the effect of xenia on 1000-grain weight were confirmed.Presently quantitative xenia was analysed basing on the green colour of the grain. 90 inbred lines of yellow grain differences in percent of crossing were ascertained. In 27 percnet of the analysed lines a significant quantitative xenia (1000-grain weight) was found. Out of the 90 lines as many as 29 percent gave, on open pollination, from 66 to 85 percent of hybrid grain. In four lines selected, quantitative xenia amounted 38, 25, 20 and 12 percent and crossing ability 57, 84, 58 and 74 percnet. Theselines may be of practical use in producing heterotic hybrids.