杂交育种从二代到四代,由于染色体重新组合,就会不断发生性状分离.要获得一个稳定的后代,并应用于生产,至少需要七、八年.为了缩短育种年限,尽快培育优良新品种,在常规育种的基础上,我们开展了小麦孤雌育种的试验研究,以期探索育种的新途径,多快好省地培育出优良新品种. 一、孤雌育种的实践意义植物的雌蕊在异常条件下,如果未能进行正常受精,没受精的卵细胞,经受刺激,能分裂成单倍体的胚.在胚发育的最初阶段,染色体经过加倍,生长成纯合的二倍体植物,这种现象即是孤雌生殖.如果在常规育种的基础上,诱导杂种一代的 Crossbreeding from the second generation to the fourth generation, due to chromosome recombination, there will be continuous segregation of traits .To obtain a stable offspring, and applied to the production, at least seven or eight years.In order to shorten the breeding life, as soon as possible to cultivate good new varieties On the basis of conventional breeding, we conducted a pilot study on the parthenogenesis of wheat in order to explore new ways of breeding, and cultivate new varieties more quickly and economically.Part I. Practical significance of parthenogenetic plant The pistil of plant is abnormal Under normal conditions, unfertilized oocytes that undergo stimulation may divide into haploid embryos during the initial stage of embryo development. After the initial stage of embryo development, the chromosomes are doubled to grow into homozygous diploid plants. Phenomenon is parthenogenesis, if the conventional breeding based on induction of hybrid generation