Foliar application of plant nutrients and kinetin modifies growth and essential oil profile in Rosa damascena under acidic conditions
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- 作者：Probir Kumar Pal ; Mitali Mahajan ; Vijai K. Agnihotri
- 刊名：Acta Physiologiae Plantarum
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：38
- 期：7
- 全文大小：1,222 KB
- 刊物主题：Plant Physiology; Plant Genetics & Genomics; Plant Biochemistry; Plant Pathology; Plant Anatomy/Development; Agriculture;
- 出版者：Springer Berlin Heidelberg
- ISSN：1861-1664
- 卷排序：38
文摘
Rosa damascena Mill. is cultivated for its high-value essential oil in different parts of the world. The flower yield and the composition of essential oil of R. damascena are strongly affected by a number of factors. Nevertheless, the interactive effects of foliar application of plant nutrients and kinetin and its time of application on yield and secondary metabolites profile of R. damascena under acidic conditions are still unclear. Thus, a field experiment comprising two different times of spray and five foliar spray treatments was conducted to test the hypothesis that flowering behavior and secondary metabolites profile can be modified through proper nutrient supply at right time. The foliar spray at flower bud appearance stage (S2) significantly (P ≤ 0.05) increased flower yield by about 10.0 % compared with the foliar application at axillary bud development stage (S1) during both years, regardless of plant nutrients. Among the foliar spray treatments, kinetin at 0.20 g L−1 registered about 23–39 % higher flower yield compared with the water spray control; however, remained statistically at par (P ≤ 0.05) with Ca(NO3)2 at 4.06 g L−1. Moreover, the percentage of major fragrance-bearing compounds of essential oil (β-citronellol + nerol, linalool, E-geraniol, and Z-citral) was marginally increased with Ca(NO3)2 compared with kinetin treatment. However, the percentages of major hydrocarbons, nonadecane and heneicosane, were noticeably increased when kinetin was applied at S1. Foliar application of kinetin and Ca(NO3)2 might be done to improve flower yield and essential oil content in R. damascena flowers.KeywordsAcidic conditionCa(NO3)2Foliar sprayHydrocarbonsKinetinEssential oil