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首页> 外文期刊>Plant and Soil >Zinc efficiency of oilseed rape (Brassica napus and B. juncea) genotypes.
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Zinc efficiency of oilseed rape (Brassica napus and B. juncea) genotypes.

机译：油菜（甘蓝型油菜和芥菜型）基因型的锌效率。

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In pot experiments, 22 rape and 3 B. juncea cultivars were grown on Zn-deficient soil with (+Zn) or without added Zn (-Zn). In a field trial in 1995 near Lameroo, South Australia, the 3 B. juncea cultivars and 7 rape cultivars were grown on a Zn-deficient soil with or without added Zn. In the pot experiments, Zn efficiency (ratio of shoot dry matter in the -Zn to shoot dry matter in the +Zn treatment expressed as a percentage) varied from 32% for Wuyou 1 for rape cv. 92-13 to 74% for Siren, while B. juncea efficiencies ranged from 43% for CSIRO-6 to 62% for Pusa Bold. Rape cv. Narendra, Dunkeld, Barossa, Oscar and Xinza 2 performed well under the -Zn treatment. Root dry matter accumulation was significantly higher in Zn-efficient genotypes. Zn efficiency (ratio of seed yield in -Zn to seed yield in +Zn expressed as a percentage) in the field experiment varied from 62% for Huashang 2 to 76% for Dunkeld. With few exceptions, the response of genotypes to Zn deficiency was similar in pot and field experiments. There appeared to be genetic control of Zn concentrations in tissues. Zn-efficient genotypes had a lower Zn concentration in roots and a higher Zn concentration in the youngest fully opened leaf blades, indicating a better transport of Zn. This, together with a higher Zn uptake, appeared to be the basis of expression of Zn efficiency.
机译：在盆栽试验中，在（+ Zn）或不添加Zn（-Zn）的缺锌土壤上种植了22个油菜和3个芥菜种。在1995年在南澳大利亚州Lameroo附近进行的田间试验中，在含锌或不含锌的缺锌土壤上种植了3个B.ncecea品种和7个油菜品种。在盆栽试验中，油菜的锌效率（-Zn的茎干物质与+ Zn处理中的茎干物质之比，以百分比表示）从油菜五粮1的32％变化。警报器的探测效率为92-13％到74％，而芥菜双歧杆菌的效率从CSIRO-6的43％到Pusa Bold的62％。强奸简历Narendra，Dunkeld，Barossa，Oscar和Xinza 2在-Zn处理下表现良好。锌高效基因型的根干物质积累显着更高。田间试验的锌效率（以-Zn表示的种子产量与以+ Zn表示的种子产量之比，以百分比表示）从华商2的62％到邓克尔德的76％。除少数例外，在盆栽和田间试验中，基因型对锌缺乏的反应相似。似乎可以控制组织中锌的浓度。高效锌基因型在根部的锌含量较低，而最年轻的完全打开的叶片中的锌含量较高，表明锌的转运更好。这与较高的锌吸收量一起，似乎是锌效率表达的基础。

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