Archambault Daniel J, Li Xiaomei, Foster Kenneth R, Jack T R
Laurentian University, Sudbury, Ontario, Canada.
Environ Monit Assess. 2006 Apr;115(1-3):509-30. doi: 10.1007/s10661-006-7227-z. Epub 2006 Apr 16.
Ethephon, which releases ethylene within plant tissues after application, was chosen to perform assessments of the relative sensitivity of crops to ethylene and to determine which stages of plant development were most sensitive. The species chosen were: barley, wheat, oats, canola and field pea, all of which are important crops in the province of Alberta, Canada. Plants were treated with ethephon at one of 7 different stages. Plants were assessed for their vegetative and reproductive growth, including height, biomass, yield and seed quality. Visual symptoms were photographed and documented to compare them with symptoms caused by ethylene applied as a gas. It was concluded that in barley, wheat and canola the late vegetative and early reproductive stages were most sensitive, at least when sensitivity was defined as reductions in yield and quality. As for field pea, ethephon had no effect on yield but did cause increased numbers of pods, which in certain conditions could lead to increased yields. Significant effects on vegetative growth were only observed in the early vegetative stages of development but with no effects on yield. The screening protocol successfully identified sensitive cultivars and growth stages for further investigation of the effects of ethylene exposure.
乙烯利在施用后会在植物组织内释放乙烯，被用于评估作物对乙烯的相对敏感性，并确定植物发育的哪些阶段最为敏感。所选的物种有：大麦、小麦、燕麦、油菜和豌豆，所有这些都是加拿大艾伯塔省的重要作物。在7个不同阶段之一用乙烯利处理植物。对植物的营养生长和生殖生长进行评估，包括高度、生物量、产量和种子质量。拍摄并记录视觉症状，以便与以气体形式施用乙烯所引起的症状进行比较。得出的结论是，在大麦、小麦和油菜中，营养生长后期和生殖生长早期最为敏感，至少当敏感性被定义为产量和质量下降时是如此。至于豌豆，乙烯利对产量没有影响，但确实导致豆荚数量增加，在某些情况下这可能会导致产量增加。仅在营养生长早期阶段观察到对营养生长有显著影响，但对产量没有影响。该筛选方案成功地鉴定出了敏感品种和生长阶段，以便进一步研究乙烯暴露的影响。
