【摘要】 ［８４Ｇ＿６×７９（ｌＢ）８－８］Ｆ＿１去雄第７ｄ，用ＡＲ＿７７黑麦花粉重复授粉２次，结实８粒，诱导结实率４．４％，孤雌生殖一代获得纯合二倍体５株，纯合二倍体频率为２．７８％；孤雌生殖二代１８－３－１和１８－３－４两个株系的主要农艺性状表现整齐一致，其中１８－３－４植株较矮，抗病性较好，是一个早熟、大穗、大粒高抗条锈病的新品系。１９９３～１９９４年品比试验表明，该品系较小偃６号增产２５．３％，较陕麦２２９增产１８．１％。本文还对黑麦花粉诱导孤雌生殖的机理、诱导结实率和选择效率以及孤雌生殖二代的一致性进行了讨论。更多还原

【Abstract】 Seven days after emasculation,the[84G₆ × 79（ 1B） 8一8]F₁ plants werepollenized twice with pollen of rye AR₇.With 8 grains of seeds and 4.4%of inducedseeds,5 homozygous diploid plants were derived from parthenogenesis progenies2.Thefrequency of the homozygous diploid was 2.7. The two plant lines, 18-3-1 and 18-3-4 in pa₂,were uniform in main agricuLtural features. The 18-3-4 plant line is dwarfer andhas better disease resistance ability than the 18-3-1.So it is a new wheat strain with pre-cocity,larger ear,bigger grain andhigher resistance to stripe rust.The varietaL trial in1993～1994 indicated that the p 18-3-4 strain yielded 25.3%more of output than Xiaoy-an No. 6 and 18.1%more than Shaanmai No. 229. The mechanism of the parthenogene-sis induced by rye pollen,the induced seed-setting percentage and selecting efficiency aswell as the uniformity of parthenogenesis generation 2were also discussed.更多还原