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首页> 外文期刊>International journal of plant sciences >EFFECTS OF GENETIC VARIATION AND INBREEDING ON VOLATILE PRODUCTION IN A FIELD POPULATION OF HORSENETTLE
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EFFECTS OF GENETIC VARIATION AND INBREEDING ON VOLATILE PRODUCTION IN A FIELD POPULATION OF HORSENETTLE

机译:遗传变异和近距离繁殖对马刺种群的生产能力的影响

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摘要

Plant volatiles mediate numerous interactions between plants and insects, yet few studies have examined variation in volatile production within plant populations or the genetic and environmental causes of this variation. Here we document the effects of inbreeding and maternal family on volatile production by horsenettle Solatium carolinense L. (Solanaceae). We collected volatiles from ramets (clones) of each of 12 genets (genotypes) of horsenettle grown in four agricultural fields with natural levels of herbivory. The 12 genets included self- and cross-pollinated progeny from six maternal plants. We found that inbreeding reduced total volatile production relative to that of outcrossed plants. We also found a breeding-by-family interaction for the total amount and blend of volatiles, indicating genetic variation among families for inbreeding depression. Analysis of outcrossed plants alone (a random sample from the population) revealed a genet effect on the total amount and blend of volatiles released, indicating broad-sense heritability of volatile traits. Our findings offer insight into the consequences of inbreeding on volatile production and the variation in volatile cues available to foraging insects in a wild plant system. Moreover, we believe this to be the first study demonstrating genetic variation for plant volatiles in a noncultivated species under field conditions.
机译:植物挥发物介导了植物与昆虫之间的许多相互作用,但很少有研究检查植物种群中挥发物产生的变化或这种变化的遗传和环境原因。在这里,我们记录了近亲繁殖和母亲家庭对马horse Solatium carolinense L.(茄科)挥发物产生的影响。我们从在天然草食性水平的四个农业领域种植的马蹄类植物的12种基因型(基因型)的分株(克隆)中收集了挥发物。这十二个种系包括来自六种母本植物的自花和异花授粉后代。我们发现,与近交植物相比,近交减少了总挥发物的产生。我们还发现了挥发物总量和挥发物的逐个家庭交互作用,表明近亲抑郁的家庭之间存在遗传变异。单独对异交植物进行分析(从种群中随机抽样)表明,其对释放的挥发物的总量和混合产生了遗传效应,表明挥发物性状具有广泛的遗传性。我们的发现提供了对近距离繁殖对挥发性植物产生的后果以及野生植物系统中觅食昆虫的挥发性线索变化的见解。此外,我们认为这是首次证明在田间条件下非栽培物种中植物挥发物的遗传变异的研究。

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