【摘要】 抗病鉴定表明,纤毛鹅观草（Roegneria ciliaris,2n=28,SSYY）对麦类赤霉病具有较高的抗病性。用离体/活体胚培养法成功地获得了纤毛鹅观草与普通小麦（Triticumaestivum,2n=42.AABBDD）属间杂种。杂交结实率为67.74%,胚培成苗率为5.41%。F₁杂种生活力强、雄性不育,形态特征介于双亲之间并偏向小麦亲本。F₁杂种染色体数为预期的2n=35（SYABD）,花粉母细胞减数分裂中期Ⅰ染色体构型平均为32.86个单价体、0.93个棒状二价体、0.13个环状二价体和0.006个三价体。对杂种的形态学、染色体行为、雄性不育机制以及潜在的育种价值进行了讨论。更多还原

【Abstract】 Roegneria ciliaris (2n=28, SSYY) was identified to have excellent resistance to Gibberella zeae. The species was successfully hybridized with Triticum aestivum c. v. "Chinese Spring" (2n=42, AABBDD) by modified Kruse’s (1974) in vivo/in vitro embryo culture technique. The seed set was 67.74%, and 5.41% embryos cultured developed into hybrid plants. The hybrid was vigorous and male sterile. Morphologically, it was intermediate but more semblable to its wheat parent. The intergeneric hybrid had expected chromosome number of 2n=35, SYABD, and mean meiotic configuration of 33.34 univalents, 0.93 rod bivalents, 0.13 ring bivalents, and 0.006 trivalents at the MI of its PMCs. Its morphology, chromosome behavious, mecbanism of male sterility and potential value in wheat breeding were also discussed.更多还原