水分胁迫对罗勒生长和叶绿素含量的影响

Q4 Agricultural and Biological Sciences

Journal of the Botanical Research Institute of Texas Pub Date : 2023-03-31 DOI:10.30564/jbr.v5i2.5494

S. Oluwole, Simeon Y. Asokere, M. L. Ogun, T. Ewekeye, A. W. Ojewumi

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引用次数: 0

摘要

由于其广泛的食用和药用用途，山茱萸是一种重要的植物。尽管其相关性，其形态生理组成受到几种非生物胁迫的影响。因此，本研究考察了水分胁迫对黄菖蒲生长和叶绿素含量的影响。选用24个盆栽，每盆2个，采用完全随机设计，分为极湿型(VWO)、中度水分胁迫型(MWSO)、强水分胁迫型(SWSO)和水分充足型(AWO) 4组。50厘升的水应用于AWO每天一次，VWO每天两次，MSWO每三天一次，SWSO每周一次。生长参数:处理6周后1周测定茎高、叶数、叶面积、茎周长和叶柄长。叶绿素含量在处理8周后每隔2周测定一次。采用SAS软件进行均数±标准差、单因素方差分析等描述性统计(p < 0.05)。结果表明:VWO的平均茎高(27.50±0.29 cm)、叶数(37.00±9.0)、叶面积(735.7±4.12 cm2)、茎周长(0.40±0.00 cm)和叶柄长(7.20±0.40 cm)最高;叶绿素(56.70±0.65 mg-1)也得到了类似的结果。综上所述，定期浇水能促进植株生长，提高叶绿素含量。

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Effects of Water Stress on Growth and Chlorophyll Contents of Ocimum gratissimum L. (Basil) [Lamiaceae]

Ocimum gratissimum is an essential plant because of its wide food and medicinal usage. Despite its relevance, its morpho-physiological compositions are influenced by several abiotic stresses. Hence, this study examined the effects of water stress on the growth and chlorophyll contents of O. gratissimum. Seedlings of O. gratissimum were grown in twenty-four pots, two per pot and were arranged using a complete randomized design with four groups: Very Wet O. gratissimum (VWO), Moderately Water Stress O. gratissimum (MWSO), Strongly Water Stress O. gratissimum (SWSO) and Adequately Watered O. gratissimum (AWO) as control. Fifty centiliters of water was applied in AWO once daily, VWO twice daily, MSWO once in three days and SWSO once a week. Growth parameters: Stem height, number of leaves, leaf area, stem girth and petiole length were determined one week after treatment for six weeks. Chlorophyll contents were determined at two weeks intervals after treatment for eight weeks. Descriptive statistics such as mean±standard deviation and one-way Analysis of Variance (p < 0.05) were done using SAS software. Results obtained showed the highest mean stem height (27.50 ± 0.29 cm), number of leaves (37.00 ± 9.0), leaf area (735.7 ± 4.12 cm2), stem girth (0.40 ± 0.00 cm) and petiole length (7.20 ± 0.40 cm) in VWO. Similar results were obtained for chlorophyll (56.70 ± 0.65 mg–1). It could be concluded that regular watering of O. gratissimum could promote growth and increase chlorophyll contents of the plant.

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来源期刊

Journal of the Botanical Research Institute of Texas Agricultural and Biological Sciences-Plant Science

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： The Journal of the Botanical Research Institute of Texas, formerly called Sida, Contributions to Botany, publishes research in classical and modern systematic botany—including studies of anatomy, biogeography, chemotaxonomy, ecology, evolution, floristics, genetics, paleobotany, palynology, and phylogenetic systematics. Geographic coverage is global. Articles are published in either English or Spanish; an abstract is provided in both languages. All contributions are peer reviewed and frequently illustrated with maps, line drawings, and full color photographs.