中南穿梭育种对南斯拉夫玉米群体改良的互补性研究

198 5- 1997年对南斯拉夫玉米群体SYN1/ 9C0 进行半同胞轮回选择。 1998年通过把在唐山C1～C6和在贝尔格莱德进行C3～C6共计 10个轮回群体与 4个标准自交系进行半双列杂交研究 ,连续 2年试验 ,结果一致。研究结果表明对群体产量和测交组合产量以及产量杂种优势、配合力和田间部分性状一般配合力均存在显著差异 ,南斯拉夫和唐山两地改良效果极具互补性。实验表明 ,中南穿梭育种在提高南斯拉夫群体自身产量、测交组合产量的同时 ,能更为有效地提升群体杂种优势 ,使产量特殊配合力、一般配合力同时提高

The Mutual Complement Studies for Yugoslavia Maize Population Improvement Through the Shuttle Breeding

Yugoslavia maize population improvement was carried out by the method of HSRS and the way of shuttle beeding during 1985 to 1997。The 10 circles including 6 circles achieved in TangShang and 3 circles done in Belgrade were crossed with 4 inbred lined in half dialled-cross。40 hybrids together with 10 circles and 4 inbred lines were planted and studied for 2 years in TangShan。Signifficant difference and Strong complement were discovered,such as population yield and average yield of top-tested crosses。planting traits GCA and heterosis。The studied results also showed that shuttle breeding could improve not only population but also heterosis,especially SCA and GCA of yield were acquired。with the same steps。