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杂种优势是个普遍现象。研究萝卜品种间杂种优势,选出优良的杂种亲本组合,探讨杂种亲本选配规律,具有生产实际与理论意义。1959-1961年在南京农学院卫岗农场进行二年试验。1959年选择浙大长、胶州青、于榆青、拌倒牛等25个品种为亲本材料,1960年春季进行天然与人工杂交,共收到一代杂种44个组合的种子,当年秋季将其中34个一代杂种与亲本进行产量比较试验。1961年选其中产量较高的 10个一代杂交种及 5个杂交第二代,共15个组合,再与亲本进行一次产量比较,进一步测定共增产性能。二年试验结果如下: (一)萝卜杂交种与亲本产量比较:1960年34个一代杂交种与亲本产量比较的结果,其中为亲本平均产量101-115％的有7个组合;为亲本平均产量116—150％的有8个组合;为亲本平均产量150％以上的,即增产权显著的有10个组合;其余8组得负势。
Heterosis is a common phenomenon. Studying the heterosis among radish varieties, selecting the excellent hybrid parent combinations and exploring the matching rules of hybrid parents, have the practical and theoretical significance. 1959-1961 in Nanjing Agricultural College Wei Gang farm for two years. In 1959, 25 varieties including Zhejiang Dajian, Jiaozhou Green, Yuqing and Bailianniu were selected as their parents. In the spring of 1960, natural and artificial hybridization was carried out. A total of 44 combinations of hybrids of the first generation were received, of which 34 A generation of hybrids and their parents for yield comparison test. In 1961, 10 high-yielding hybrids and 5 hybrid second-generation hybrids were selected. A total of 15 combinations were selected, and their yield was compared with that of their parents to further determine the total yield-increasing performance. The results of two years are as follows: (1) The yield of hybrids of radish and their parents: The results of the comparison of yield of 34 hybrids and their parents in 1960, among them, there are 7 combinations with the average yield of 101-115% 116-150% of the 8 combinations; the average yield of more than 150% of the parents, that is, significantly increase the right to have 10 combinations; the remaining 8 groups were negative.