施肥和接种巴西氮螺旋菌对龙舌兰光合化合物的影响

Domitila Jarquín- Rosales, J. E. Valle, Juan José Alpuche- Osorno, Gerardo Rodríguez Ortíz, Meredith P. Martin, G. V. C. Ángeles
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引用次数: 1

摘要

龙舌兰(Agave angustifolia)是墨西哥瓦哈卡州龙舌兰属中最重要的一种,它被用作生产梅斯卡的原料。然而,缺乏对该品种最佳农业种植方法的研究,包括最有效的肥料用量和细菌接种的使用。本研究的目的是评价在灌水施肥和接种巴西氮螺旋菌的情况下,安格斯特叶植物种子产生的光合化合物。试验采用3×2因子排列的完全随机设计,灌溉因子类型为3个水平:1)水分;2) N、P、K和微量元素含量为50%的施泰纳营养液;3)营养液为100%。随后,将每个灌溉组分成2个亚组,对第二个因素(接种巴西螺)的影响进行评价:1)接种植株;2)对照植株不接种,共6个处理,每个处理20株(重复)。在每个处理中,我们分别在8:00和16:00测量了叶片样品中的叶绿素a、b和总含量、Rubisco和糖含量以及苹果酸引起的酸度。我们发现,与未受精和未接种的植物、仅受精或仅接种的植物相比,受精和接种的植物叶片更大,叶绿素a、b和总含量更高,糖和Rubisco含量更高。此外,在所有处理中,苹果酸的最高酸度值出现在早晨的头几个小时,但在施用更多营养液(100%)和接种巴西螺的植物中更为明显。因此,我们建议同时使用施肥和接种,以获得更大的生长和光合化合物的积累
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effects of fertirrigation and Azospirillum brasilense inoculation on photosynthetic compounds of Agave angustifolia
Agave angustifolia is the most important species of the genus Agave in Oaxaca, Mexico for its use as raw material for the production of mescal. However, research is lacking on the best agricultural methods for growing this species, including on the most effective fertilizer rates and on the use on bacterial inoculation. Our objective was to evaluate the production of photosynthetic compounds in A. angustifolia plants originating from seeds when they were fertilized by irrigation and inoculated with Azospirillum brasilense. An experiment was carried out in a completely randomized design with a 3×2 factorial arrangement, with the type of irrigation factor at three levels: 1) water; 2) a Steiner nutrient solution composed of N, P, K and micronutrients at 50%; and 3) the nutrient solution at 100%. Subsequently, each irrigation group was separated into two subgroups to evaluate them under the effect of the second factor, inoculation with A. brasilense: 1) inoculated plants; 2) control plants not inoculated for a total of six treatments with 20 plants (replications) per treatment. In each treatment we quantified Chlorophyll a, b and total, Rubisco, and sugars content in foliar samples, as well as the acidity attributed to malic acid at 8:00 and 16:00 hours. We found that plants fertilized and inoculated had bigger leaves with higher amount of Chlorophyll a, b and total and higher amounts of sugars and Rubisco compared to both plants unfertilized and without inoculation and to plants with just fertilization or just inoculation alone. Furthermore, the highest acidity value attributed to malic acid occurred during the first hours of the morning, in the plants of all treatments, but more noticeable in those plants fertirrigated with more nutrient solution (100%) and inoculated with A. brasilense. We therefore advise using both fertilization and inoculation for greater growth and accumulation of photosynthetic compounds in A. angustifolia
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