【摘要】 远缘杂交遇到的关键问题是可交配性和不育性,为深入了解远缘杂交的可交配性和不育性,探讨了小偃麦与中间偃麦草杂交当代的可交配性和F1~F4的不育性表现。小偃麦与中间偃麦草杂交当代的结实率为10%~39%,F1当年不结实,二至五年生结少量种子,结实率有逐年恢复的倾向;F2~F5分离世代不同类型结实率不同,普通小麦类型、小偃麦类型结实率可达70%~100%,中间偃麦草类型40%~50%,种子饱满度逐代改进。更多还原

【Abstract】 The key problem which distant hybridization encountered is crossability and sterility,for the irsight of that,the contemporary crossability and sterility expression of F1~F4of Trititrigiaand Thinopyrum intermedium hybridization were discussed.Seed setting rate of contemporary hybrids for Trititrigiaand Thinopyrum intermedium hybrids was 10%~39%,F1was sterility in the same year,and with a small amount seed for biennial to 5-year-old,seed setting rate had a tendency to gradually restore.The different types of hybrid had different seed setting rate for F2~F5segregative generation,the seed setting rate of the type common wheat and Trititrigia could reach 70%~100%,that of Thinopyrum intermedium was 40%~50%,seed plumpness was gradually improved.更多还原