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野生棉具有多种抗性,适应能力强,在棉花育种上有很大的利用价值。但它们对光周期反应极为敏感,在我国长江流域棉区栽培,一般很难开花结实,影响后代的繁衍。为此,我们以野生棉为接穗,陆地棉为砧木,采用嵌合芽接、切接或靠接等方法,加速繁殖后代,取得了较好的效果。试验在温室中进行,供试材料为非洲异常棉(G.anomalum)瑟伯氏棉(G.fhurbe-ri)和戴维逊氏棉(G.davadsonii)三个野生种。以陆地棉(G.hirsufum)“岱字15号”作砧木。 (一)嫁接愈合过程 1.嵌合芽接:砧木选生长健壮、有10
Wild cotton has a variety of resistance, adaptability, cotton breeding has great use value. However, they are extremely sensitive to the photoperiodic response. Cultivation in the cotton area of the Yangtze River valley in China is generally difficult to bloom and affect the multiplication of future generations. To this end, we use wild cotton as the scion, Upland cotton as the rootstock, using mosaic budding, cut or by docking and other methods to accelerate the reproduction of offspring, and achieved good results. The experiment was carried out in a greenhouse. The test materials were G. wildhide and G. davadsonii three wild species. Gypsophila (G.hirsufum) “Dai Zi No. 15” as rootstock. (A) the process of grafting and healing 1. Chimeric Budding: rootstock election growth robust, 10