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1973年1月应用~(60)钴—r 射线处理雪柑芽条,获得的突变系雪柑9—12—1和9—12—4的极少核性状显著,雪柑9—12—1Mv_1十三年鉴定,极少核性状稳定,平均单果种子为0.25粒,属于遗传性变异;Mv_2和 Mv_3的平均单果种子分别为0.08粒和0.06粒,测定整株果实样品,Mv_2和 Mv_3的无核果分别占93.84%和96.72%,中试四年生亩产1590.3公斤,比对照增产4.9%,其它优良性状与原品种基本不变,可以称为一个新品系。9—12—4Mv_1七年鉴定,少核性状稳定,平均单果种子为0.9—1.3粒,Mv_2和 Mv_3的少核性状也基本稳定,而且基本保持原品种的其它性状。
In 1973 January application of ~ (60) cobalt-r-ray treatment of citrus buds, accessions of the mutant lines Xuexian 9-12-1 and 9-12-4 rare nuclear significant, Xuegan 9-12-1Mv_1 Thirteen years of identification, very few nuclear stable, with an average of 0.25 fruit seeds, is a genetic variation; Mv_2 and Mv_3 the average fruit seed were 0.08 and 0.06, the whole fruit samples were measured, Mv_2 and Mv_3 of the fruitless Accounting for 93.84% and 96.72% respectively. The annual yield per mu in the fourth year of trial was 1590.3 kg, an increase of 4.9% over the control. Other good traits and the original varieties remained basically unchanged, which could be called a new line. The 9-12-4Mv_1 was identified for seven years with less nucleus and stable seeds. The average number of seeds per plant was 0.9-1.3. The fewer nuclei of Mv_2 and Mv_3 were also basically stable, and the other traits of the original varieties were basically maintained.