Isoperoxidases of fourteen species of poplars in Heilongjiang Province were analyzed by polyacrylamidegel disc-electrophoresis. The major zymogram of petioles of poplars was consisted of twelve kinds of isoenzymes, in...Isoperoxidases of fourteen species of poplars in Heilongjiang Province were analyzed by polyacrylamidegel disc-electrophoresis. The major zymogram of petioles of poplars was consisted of twelve kinds of isoenzymes, in which 35% zymogram was just the same and represented the specialized zymograms of poplars. The resuits of the experiments showed that the closer the affinity relationships of the species were, the greater the similar values between the zymograms were. There were very great similar values among natural hybrid species.But in sect. Tacamahaca Spach, the similar values between Populus koreana Rehder and P nakaii Skv were obviously smaller .Isoenzyme analysis provided new information for plant classification on the molecular level.展开更多
谷子[Setaria italica (L.) P.Beauv]是起源于中国的一种古老作物,营养价值高,富含人体所需的多种维生素、氨基酸和矿物质,具有抗旱、耐瘠薄、抗逆性强的特点,尤其适合在北方干旱和半干旱地区种植。杂种优势利用已经成为提高作物产量的...谷子[Setaria italica (L.) P.Beauv]是起源于中国的一种古老作物,营养价值高,富含人体所需的多种维生素、氨基酸和矿物质,具有抗旱、耐瘠薄、抗逆性强的特点,尤其适合在北方干旱和半干旱地区种植。杂种优势利用已经成为提高作物产量的有效途径,在谷子杂交种应用方面已经获得了一定突破。谷子杂交种是由不育系母本和恢复系父本配组育成的两系杂交种,且母本具有5%左右的自交结实率,因此在制种过程中不可避免地会导致杂交种中混杂一定的不育系自交种。此外,由于授粉时杂株花粉的污染、收获时的机械混杂以及收获后的处理程序等原因,也会导致杂交种中混有恢复系和其他假杂交种,从而严重影响谷子杂交种的纯度。这些假杂种或者几乎没有产量,或者产量明显低于真杂交种,它们的存在必然导致杂交种增产潜力得不到充分发挥。因此,如何有效地鉴定谷子杂交种的纯度,成为保证杂交种增产效果的重要一环。展开更多
文摘Isoperoxidases of fourteen species of poplars in Heilongjiang Province were analyzed by polyacrylamidegel disc-electrophoresis. The major zymogram of petioles of poplars was consisted of twelve kinds of isoenzymes, in which 35% zymogram was just the same and represented the specialized zymograms of poplars. The resuits of the experiments showed that the closer the affinity relationships of the species were, the greater the similar values between the zymograms were. There were very great similar values among natural hybrid species.But in sect. Tacamahaca Spach, the similar values between Populus koreana Rehder and P nakaii Skv were obviously smaller .Isoenzyme analysis provided new information for plant classification on the molecular level.
文摘谷子[Setaria italica (L.) P.Beauv]是起源于中国的一种古老作物,营养价值高,富含人体所需的多种维生素、氨基酸和矿物质,具有抗旱、耐瘠薄、抗逆性强的特点,尤其适合在北方干旱和半干旱地区种植。杂种优势利用已经成为提高作物产量的有效途径,在谷子杂交种应用方面已经获得了一定突破。谷子杂交种是由不育系母本和恢复系父本配组育成的两系杂交种,且母本具有5%左右的自交结实率,因此在制种过程中不可避免地会导致杂交种中混杂一定的不育系自交种。此外,由于授粉时杂株花粉的污染、收获时的机械混杂以及收获后的处理程序等原因,也会导致杂交种中混有恢复系和其他假杂交种,从而严重影响谷子杂交种的纯度。这些假杂种或者几乎没有产量,或者产量明显低于真杂交种,它们的存在必然导致杂交种增产潜力得不到充分发挥。因此,如何有效地鉴定谷子杂交种的纯度,成为保证杂交种增产效果的重要一环。
