通过以上各种条件的优化，本文建立了一套较为高效的玉米优良自交系R18转化及再生系统。
Using all the methods mentioned above, an efficient and stable transformation system of embryogenic calli of elite inbred line R18 was established.
利用丹340改良了黄早四类群玉米自交系吉853，育成配合力高、抗丝黑穗病的优良自交系津01和津02。
Maize inbred line Ji853 from Huangzaosi groups was improved by Dan340, and selected excellent line cultivars Jin01 and Jin02 that with high combining ability and head smut-resistance.
优良玉米自交系自330、E28和丹340等为代表的丹玉自交系，是中国玉米育种和生产中最重要的骨干材料。
The superior maize self-bred lines of Danyu series such as Zi330, E28 and Dan340, etc, are the most important key materials for the maize breeding and production in China.
我国选育的优良玉米自交系齐319高抗南方玉米锈病。
The inbred line Qi319 is highly resistant to southern corn rust.
我国选育的优良玉米自交系齐319高抗南方玉米锈病。
The inbred line Qi319 is highly resistant to southern corn rust.
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