Studies on resistance of strawberries to mites. I. Effects of plant nitrogen.
Studies on resistance of strawberries to mites. I. Effects of plant nitrogen.
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草莓对螨虫的抗性研究。
DOI：
10.1093/jee/63.6.1855
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发表时间：
1970
期刊：
影响因子：
--
通讯作者：
A. Lasheen
中科院分区：
文献类型：
--
作者：
J. Rodríguez;C. Chaplin;L. Stoltz;A. Lasheen
以2个草莓品种和3个草莓选系为材料，在温室内进行了4个营养水平的营养液栽培试验。叶氮和螨的伤害显着正相关，无论是治疗和克隆，以及吸收氮和螨的繁殖力在秋季。螨尸体的氨基酸分析显示，与螨繁殖力的负相关性时，氨基酸先前确定为非必需的T。荨麻疹被认为是，并提供了一些解释。初步研究季节对抗性的影响表明，所有无性系在夏季产生的叶片都是相对抗性的。
Five strawberry clones, including 2 commercial varieties and 3 selections, that varied in resistance to the two-spotted spider mite, Tetranychus urticae Koch, were greenhouse grown in nutrient culture at 4 levels of nutrition. Significant positive correlations between foliage nitrogen and mite injury were shown, both by treatment and by clone, as well as between absorbed nitrogen and mite fecundity in the fall. Amino acid analyses of mite carcasses revealed a negative correlation with mite fecundity when amino acids previously determined as nonessential to T. urticae were considered, and some explanations are offered. Preliminary studies in seasonal influence on resistance showed that foliage produced during the summer months by all clones was relatively resistant.