文章基本信息

标题：Photosynthetic pigments, nitrogen status, and flower behavior in eggplant exposed to different sources and levels of potassium
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作者：Douglas Jos&e Marques ; Fernando Broetto ; Allan Klynger da Silva Lobato 等
期刊名称：Scientific Research and Essays
印刷版ISSN：1992-2248
出版年度：2013
卷号：8
期号：2
页码：67-74
DOI：10.5897/SRE11.2052
语种：English
出版社：Academic Journals
摘要：The aim of this study was to investigate (i) the influence of different sources and levels of potassium on photosynthetic pigments, (ii) measure nitrogen status in leaf, (iii) evaluate flower behavior in eggplant (Solanum melongena L.), and (iv) to identify a better potassium source to cultivation of this species. The experiment design used was in factorial scheme with randomized blocks, being composed by 2 potassium sources (KCl and K2SO4), combined with 4 levels of K2O (250, 500, 750 and 1000 kg ha-1). Nitrogen accumulation in leaf at 50 days after transplanting had a higher value with KCl compared with K2SO4. Results linked to aborted fruits presented similar effects to KCl and K2SO4. This study revealed that eggplant exposed to excess potassium did not have a negative effect on chlorophyll a and b, and nitrogen concentration in leaf was significantly modified due to increase in potassium level. In addition, greater levels of potassium produced negative consequences linked to flower and fruit abortion. Therefore, potassium source indicated for eggplant is potassium sulfate.
关键词：Solanum melongena L