油菜小孢子培养和双单倍体育种研究Ⅱ.影响甘蓝型油菜和芥菜型油菜种间杂种胚产量的因素

被引:23
作者
李栒
官春云
陈社元
王国槐
刘忠松
机构
[1] 湖南农业大学
关键词
甘蓝型油菜; 芥菜型油菜; 小孢子; 胚发生; 基因型;
D O I
暂无
中图分类号
S565.4 [油菜籽(芸薹)];
学科分类号
摘要
对甘蓝型油菜与芥菜型油菜种间杂交F1 代杂种进行离体小孢子培养研究。结果表明 :(1)F1 杂种胚产量受亲本基因型的影响 ;(2 )在F1 杂种花粉可育率为 30 %~ 4 3%的范围内 ,F1 杂种花粉可育率对有效胚产量无明显影响 ;(3)供体植株年龄对高胚产量的材料无明显影响 ,对低胚产量的材料有明显影响。 (4)提出用花药颜色来选择适合的小孢子培养的花蕾的指标 ,花药颜色以绿带点黄或绿带黄为宜 ;(5 )提出胚从NLN液体培养基转到半固体B5培养基培养 3d后再转至固体B5培养基 ,比从NLN液体培养基直接转到固体培养基的培养方式相对较好 ,可提高胚再生频率 ;(6 )诱导植株再生最适合的胚龄是 2 7d ,0 .2~ 0 .3cm大小的胚比 0 .6~ 0 .8cm的胚好
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页码:744 / 749+804 +804
页数:7
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