Mahajan Mitali, Thakur Babit Kumar, Pal Probir Kumar
Division of Agrotechnology, Council of Scientific and Industrial Research-Institute of Himalayan Bioresource Technology (CSIR-IHBT), Palampur, India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
Front Plant Sci. 2022 May 17;13:896237. doi: 10.3389/fpls.2022.896237. eCollection 2022.
The essential oil of is extensively used as a key natural ingredient in the perfume and cosmetic industries. However, the productivity and quality of rose oil are a big concern from the old plantation. It is hypothesized that rejuvenation of old rose plantations through ground-level pruning at right time could improve the yield of flowers and the quality of essential oil. Consequently, a field trial was led-out with 10 treatment conditions encompassing two pruning systems (ground-level pruning and ground-level pruning followed by top pruning at the end of December) and five different months of ground-level pruning (June-October) to understand the best pruning practices. In this experiment, the flower yield ranged from 18.32 to 62.40 q ha, and oil content varied from 0.035 to 0.049% under different pruning systems and months of pruning. Ground-level pruned plants, irrespective of the month, registered statistically ( ≤ 0.05) more flower yield (618.62 and 473.29 g bush) compared with ground-level pruning followed by top pruned plants in both seasons. The average across the pruning system, ground-level pruning in October registered statistically ( ≤ 0.05) greater yield of flowers (709.10 and 605.13 g bush) compared with the ground-level pruning from June to August. Despite significant variations in flower yield among the treatments, the percentage share of the major compounds particularly β-citronellol+nerol and geraniol in the essential oil were not affected ( ≥ 0.05) by the pruning month and pruning system. Thus, the finding suggests that the production from the old plantation of can be improved by ground-level pruning during October under mild-temperate conditions.
[植物名称]的精油在香水和化妆品行业中被广泛用作关键的天然成分。然而，老种植园的玫瑰油产量和质量是一个大问题。据推测，在合适的时间进行地面修剪来使老玫瑰种植园复壮，可以提高花朵产量和精油质量。因此，进行了一项田间试验，设置了10种处理条件，包括两种修剪系统（地面修剪以及地面修剪后在12月底进行顶部修剪）和五个不同的地面修剪月份（6月至10月），以了解最佳修剪方法。在该实验中，不同修剪系统和修剪月份下，花朵产量在18.32至62.40公担/公顷之间，含油率在0.035%至0.049%之间。无论月份如何，地面修剪的植株在两个季节中与先地面修剪后顶部修剪的植株相比，花朵产量在统计学上（P≤0.05）更高（分别为618.62克/丛和473.29克/丛）。在整个修剪系统中，10月份进行地面修剪的花朵产量在统计学上（P≤0.05）高于6月至8月进行地面修剪的产量（分别为709.10克/丛和605.13克/丛）。尽管各处理间花朵产量存在显著差异，但精油中主要化合物尤其是β - 香茅醇 + 橙花醇和香叶醇的百分比含量不受修剪月份和修剪系统的影响（P≥0.05）。因此，该研究结果表明，在温和温带条件下，10月份进行地面修剪可提高老种植园[植物名称]的产量。
