以自由授粉群体和品系间杂种为对照，研究了甘蓝型油菜连续自交后代在胚胎发育上表现的效应。
The effects of successive inbreeding progenies of Brassica napus L. on the embryo development were studied in comparison with the open-pollinated population and hybrids from inbred lines.
自交亲和系萝卜单株花期、蕾期以及自交不亲和系单株蕾期授粉后花粉多数能够正常萌发并穿越柱头进入子房。
Few pollen grains of open flower self-pollination attached and germinated in the stigma of self-incompatible individuals, and intensive callose reaction occurred on the surface of stigma.
甘蓝型油菜属于常异花授粉植物，一般认为自交不会产生衰退现象，但多代连续自交对甘蓝型油菜究竟有何影响鲜见报道。
Brassica napus L. is an often cross-pollinated plant, and is not generally considered selfing recession, but it was little reported about effects of selfing on main traits of Brassica napus L.
另外，经分析可知，强迫自交的结实率比自由授粉的结实率要低。
In addition, the analysis showed that the forced self-setting rate is lower than the free pollination.
在温室大棚设施栽培条件下开展杂交、自交、自由授粉，野外昆虫辅助授粉。
Cross, self and opening pollination were conducted in the green house, the subsidiary pollination by insects was carried out outdoors.
结果表明，30个组合的玉米授粉后一天，有90%组合杂交胚中atp酶活性超过双亲或母本自交胚中atp酶活性。
The results obtained show that ATPase activities in hybrid embryos of 90% of 30 combinations on the 1st day after pollination are greater than those in parents or mother inbred embryos.
结果表明，30个组合的玉米授粉后一天，有90%组合杂交胚中atp酶活性超过双亲或母本自交胚中atp酶活性。
The results obtained show that ATPase activities in hybrid embryos of 90% of 30 combinations on the 1st day after pollination are greater than those in parents or mother inbred embryos.
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