摘要
本试验以甘蓝型杂交种秦油2号及其三系种子为材料，于1992～1993两年在浙江农业大学农场进行。试验结果表明，甘蓝型杂交油菜杂种秦油2号、不育系陕2A和保持系陕2B种子胎萌发生在开花后19天左右，并随着种子发育日趋成熟而有不断增多的趋势，而常规品种垦C1种子胎萌发生在成熟后期（开花后31天）。角果内位于果身中部的胎萌粒多于果身两端部。不同类型和品种、不同年份、具有胎萌特性同一植株的不同花序部位和同一品种不同个体（或株系）间胎萌率的变化较大。甘蓝型杂交油菜果壳对角果内发育种子具有保护作用。发育早期的果壳对种子的保护作用较强，而发育后期的果壳相对较弱，易胎萌品种的果壳对种子的保护作用较不易胎萌品种弱。
This experiment was conducted in the farm of Zhe jiang Agricultural University in Hangzhou in 1993 -1994. Hybrid rape (Braxxicanapus L. )Qinyou2 and its three-line seeds were used in the experiment. The race its showed that the vivipary (Precocious germination ) of hybrid rape Qinyou2. male sterile line (CML )Shan2A and maintenance line Shan2B seeds occurred at 19th day after flowering. and increasingly added as seed development gradually matured whereas that of general cultivar. restored line KenC1, occurred at the post-maturation stage (31 days after flowering ). The number of viviaparous rapeseeds was more in the middle of pods than in two extremes of pods. The differences of vivipary percentage in different types and varieties. different years, different branches of the same plants with viviparous property and different plant lines of the same varieties were significant. Hybrid rape pericarps could protect developing rapeseeds in pods against precocious germination. The protective function of pericarps was stronger at the early development stage than at the late developent stage. and it was weaker in vivipary-susceptible cultivar than vivipary-resistant cultivar.
出处
《种子》
CSCD
北大核心
1999年第1期9-11,共3页
Seed
关键词
甘蓝型杂交油菜
种子胎萌
胎萌率
胎萌发生特性
Hybrid Rape (Brassica napus L. ) Seed vivipary Vivipary percentage Occurrence charcteristics of seed vivipary
